CGTLA [Member]
CGTLA
Represents the CGTLA indices.
The cash outflow and inflow provided by settled derivative instruments during the period, which are classified as operating activities.
Payments for Proceeds from Settled Derivative Instruments Operating Activities
Cash receipts (payments) for settled derivatives
Line of Credit Facility Maximum Borrowing Capacity before Amendment
Maximum amount of the Credit Facility before amendment
Represents the maximum borrowing capacity of the entity under its line of credit facilities prior to amendment.
Face amount of the Credit Facility before amendment
Line of Credit Facility Borrowing Base before Amendment
Current borrowing base before amendment
Represents the borrowing base under the credit facility prior to amendment.
Borrowing base before amendment
Line of Credit Facility Current Borrowing Capacity before Amendment
Lender commitments before amendment
Amount of current borrowing capacity under the credit facility prior to amendment.
Maximum Effect of Dilutive Securities Stock Options and Restrictive Stock Units
Maximum effect of dilutive options and restricted stock awards (in dollars per share)
Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).
Vesting Period 2014 [Member]
Vesting date, 2014
Represents information pertaining to vesting period 2014.
Vesting Period 2015 [Member]
Vesting date, 2015
Represents information pertaining to vesting period 2015.
Vesting Period 2016 [Member]
Vesting date, 2016
Represents information pertaining to vesting period 2016.
Vesting Period 2017 [Member]
Vesting date, 2017
Represents information pertaining to vesting period 2017.
Amendment Description
Other Long Term Assets Noncurrent
Other long-term assets
Represents the aggregate carrying amount, as of the balance sheet date, of long-term assets not separately disclosed in the balance sheet.
Amendment Flag
Other Long Term Liabilities Noncurrent
Other long-term liabilities
Represents the aggregate carrying amount, as of the balance sheet date, of long-term liabilities not separately disclosed in the balance sheet.
Proved Developed and Undeveloped Reserves Initial Period to Drill Well
Initial period to drill well
Represents the Initial period to drill well.
Share Based Compensation Arrangement by Share Based Payment Award Intrinsic Value [Abstract]
Intrinsic Value
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Expected to Vest Outstanding Number
Number of awards (in shares)
As of the balance sheet date, the number of shares into equity instruments other than options expected to vest outstanding can be converted under the equity-based compensation plan.
Accounts Receivable Collection Period
Collection period for accounts receivable
Represents period for collection of accounts receivable.
Acreage of Area of Dedication
Area of AOD (in acres)
Represents the area of dedication.
All Others [Member]
All others
Represents information pertaining to all other customers.
Appalachia Basin, Pennsylvania and West Virginia
Represents information pertaining to Appalachia Basin.
Appalachia Basin [Member]
Appalachian Gathering Assets [Member]
Appalachian Gathering Assets
Represents the details pertaining to sale of Appalachian Gathering Assets.
Arkoma Basin and Piceance Basin [Member]
Arkoma and Piceance Basin
Represents information pertaining to Arkoma and Piceance Basin.
Arkoma Basin [Member]
Arkoma Basin, Oklahoma
Represents information pertaining to Arkoma Basin.
Area of land held (in acres)
Area of Land
Arkoma Properties [Member]
Arkoma properties
Represents details pertaining to the sale of Arkoma properties.
Barclays [Member]
Represents Barclays, a counterparty to the derivative contract.
Barclays
BNP Paribas [Member]
Represents BNP Paribas, a counterparty to the derivative contract.
BNP Paribas
CCG [Member]
CCG
Represents the CCG indices.
CGLA [Member]
CGLA
Represents the CGLA indices.
Current Fiscal Year End Date
Award Type [Axis]
TCO [Member]
Represents the TCO indices.
TCO
Commitments
Company A [Member]
Company A
Represents information pertaining to Company A.
Company B [Member]
Company B
Represents information pertaining to Company B.
Company C [Member]
Company C
Represents information pertaining to Company C.
Contractual Obligation [Axis]
Contractual obligation amount arising from different contracts.
Contractual Obligation [Line Items]
Commitments
Contractual Obligation [Table]
Schedule reflecting each contractual obligation from which amounts are due.
Contractual Obligation under Multiple Agreement [Domain]
Name of the different contractual obligations which include the imputed financing obligation, leases software licenses, convertible notes, and interest payments related to convertible notes.
Credit Suisse [Member]
Represents Credit Suisse, a counterparty to the derivative contract.
Credit Suisse
Debt Instrument, Issue Price as Percentage of Face Value
Issue price as percentage of par value
Represents the issue price of the debt instrument as a percentage of its face value.
Document Period End Date
Debt Instrument, Redemption Period before 1 December, 2015 [Member]
The period before December 1 2015.
Prior to December 1, 2015
The period on or before January 1, 2014.
Debt Instrument, Redemption Period before 1 January, 2014 [Member]
Prior to January 1, 2014
Debt Instrument Redemption Period before 1 November 2016 [Member]
Prior to November 1, 2016
Represents the period before November 1, 2016.
Debt Instrument, Redemption Period on or after 1 August 2014 [Member]
On or after August 1, 2014
The period on or after August 1, 2014.
Debt Instrument, Redemption Period on or after 1 August 2017 [Member]
On or after August 1, 2017
The period on or before August 1, 2014.
Debt Instrument, Redemption Period on or after 1 December 2015 [Member]
The period on or after December 1, 2015.
On or after December 1, 2015
Debt Instrument, Redemption Period on or after 1 December 2018 [Member]
On or after December 1, 2018
The period on or after December 1, 2018.
Debt Instrument Redemption Period on or after 1 November 2016 [Member]
On or after November 1, 2016
Represents the period on or after November 1, 2016.
Notional amount (MMBtu/Bbls per day)
Derivative, Nonmonetary Notional Amount
Debt Instrument Redemption Period on or after 1 November 2019 [Member]
On or after November 1, 2019
Represents the period on or after November 1, 2019.
Entity [Domain]
Debt Instrument, Redemption Period on or before 1 August 2014 [Member]
On or before August 1, 2014
The period before August 1, 2014.
Debt Instrument, Redemption Period on or before 1 December 2015 [Member]
On or before December 1, 2015
The period on or before December 1, 2015.
Debt Instrument Redemption Period on or Before 1 November 2016 [Member]
On or before November 1, 2016
Represents the period before November 1, 2016.
Arrangements and Non-arrangement Transactions [Domain]
Debt Instrument, Redemption Price upon Change of Control as Percentage of Principal Amount
Percentage of principal amount at which notes may be required to be repurchased in event of change of control
Represents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be repurchased in the event of a change of control.
Decrease in Proved Reserves Due to Downward Price Revisions
Reduction of proved reserves resulted from downward price revisions
Represents the decrease in proved oil and gas reserves due to downward revision of price.
Deferred Income Tax Expense (Benefit) Discontinued Operations
Deferred income tax expense (benefit) - discontinued operations
The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to discontinuing operations.
Deferred income taxes - discontinued operations
Deferred Tax Liabilities, Property, Plant and Equipment, Oil and Gas Property
Oil and gas properties
Amount of deferred tax liability attributable to taxable temporary differences from oil and gas properties.
Depletion, depreciation, amortization, and impairment of unproved properties - discontinued operations
Depletion, depreciation, amortization, impairment of unproved properties, and dry hole expense - discontinued operations
Represents the aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets relating to discontinued operations including dryhole expense.
Depletion, Depreciation, Amortization, Impairment of Oil and Gas Properties and Dryhole Expense - Discontinued Operations
Depletion, depreciation, amortization, and depletion
Depletion, depreciation, amortization, and accretion
Depletion Depreciation and Amortization
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
Derivative Contract Term [Axis]
This element represents a grouping of derivative contract terms.
Derivative Contract Term [Domain]
This element represents the terms of groupings of derivative contracts.
The amount of net gains and losses recognized in income during the period on commodity derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on commodity derivative instruments not designated as hedging instruments.
Derivative Instruments Gain (Loss) Recognized on Commodity Derivative Instrument in Income, Net
Commodity derivative fair value gains
Commodity derivative fair value gains (losses)
Deutsche Bank
Deutsche Bank [Member]
Represents Deutsche Bank, a counterparty to the derivative contract.
Sale of Piceance and Arkoma Properties - Discontinued Operations
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves Future Net Cash Flows before Income Tax Expense
Future net cash flows before income tax
Represents the amount as a result of subtracting future development and production costs from future cash inflows for each geographic region where proved oil and gas reserves exist.
Disposal Groups, Including Discontinued Operation Proceeds from Liquidation of Hedge Positions
Proceeds from liquidation of hedge positions
Represents the amount of proceeds from liquidation of hedge positions.
Disposal Groups Including Discontinued Operations Area of Low Pressure Pipeline Systems and Gathering Rights Sold
Area of low pressure pipeline systems and gathering rights sold (in miles)
Represents the area of low pressure pipeline systems and gathering rights sold by the entity during the period.
Disposal Groups Including Discontinued Operations Contingent Consideration Earn Out Period
Earn out period
Represents the earn out period under the contingent consideration arrangement.
Disposal Groups, Including Discontinued Operations Contingent Consideration Potential Cash Receipts
Additional sale proceeds on meeting certain volume threshold
Represents the amount of potential cash receipts that could result from the contingent consideration arrangements.
Period for which entity is committed to deliver minimum volumes into gathering systems, with certain carryback and carryforward adjustments for coverages or deficiencies
Represents the period for which the entity is committed to deliver minimum volumes into gathering systems.
Period for which entity is committed to deliver minimum annual volumes into gathering systems, with certain carryback and carryforward adjustments for overages or deficiencies
Disposal Groups, Including Discontinued Operations Period for Commitment to Deliver Minimum Volumes into Gathering Systems
Disposal Groups, Including Discontinued Operations Period of Exclusive Rights to Gather Gas within Area of Dedication
Period of exclusive rights to gather the gas within AOD
Represents the period of exclusive rights to gather gas within the area of dedication.
Document and Entity Information
Dominion South
Dominion South [Member]
Represents the Dominion South indices.
Represents information pertaining to agreements with service providers to procure drilling rigs and compression and frac services.
Drilling Rig Service Commitments [Member]
Drilling rigs and frac Services
Represents information pertaining to the firm transportation agreements.
Firm transportation
Firm Transportation Agreements [Member]
Impairment of Oil and Gas Properties Leases
Impairment of unproved properties for leases expired or expected to expire
The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties relating to leases as the estimate of future successful production from these properties is reduced.
Income tax expense (benefit) allocated to continuing and discontinued operations
Income Tax Expense (Benefit) Continuing and Discontinued Operations [Abstract]
Total income tax expense (benefit)
Income Tax Expense (Benefit) from Continuing and Discontinued Operations
Represents the sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing and discontinued operations.
Accrued revenue
Increase (Decrease) in Accrued Revenue
This element represents the increase or decrease in accrued revenue during the reporting period.
This item represents net changes in accounts payable for capital additions to properties, systems and facilities during the period.
Increase in accounts payable for additions to properties, gathering systems, and facilities
Increase (Decrease) in Capital Expenditures Incurred but Not yet Paid
Changes in accounts payable for additions to property and equipment
Increase (Decrease) in Revenue Distributions Payable
This element represents the increase or decrease in revenue distribution that is payable by the entity during the reporting period.
Revenue distributions payable
Increase in proved reserves due to performance revisions
Performance revisions resulting in increase of proven reserves.
Increase in Proved Reserves Due to Performance Revisions
Indices [Axis]
This element represents a grouping of indices.
This element represents the terms of groupings of derivative contracts.
Indices [Domain]
JP Morgan
JP Morgan [Member]
Represents JP Morgan, a counterparty to the derivative contract.
Borrowing base
Current borrowing base
Represents the borrowing base under the credit facility.
Line of Credit Facility, Borrowing Base
Represents the redemption price as a percentage of the principal amount at which the debt instrument may be required to be redeemed in the event of a change of control.
Long Term Debt Redemption Price Due to Change of Control as Percentage of Principal Amount
Redemption price of the debt instrument in the event of change of control (as a percent)
Long Term Debt Redemption Price with Net Proceeds from Equity Offerings as Percentage of Principal Amount
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)
Represents the redemption price as a percentage of the principal amount at which the debt instruments may be redeemed with net proceeds of certain equity offerings.
Long Term Debt Redemption with Net Proceeds from Equity Offerings as Percentage of Principal Amount
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings
Represents the percentage of the aggregate principal amount of debt instruments that may be redeemed with net proceeds of certain equity offerings.
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from initial public offering
Represents the percentage of the aggregate principal amount of debt instruments that may be redeemed with proceeds of initial public offering.
Long Term Debt Redemption with Net Proceeds from Initial Public Offering as Percentage of Principal Amount
Long Term Gas Processing Agreement [Member]
Gas processing, gathering and compression
Represents information pertaining to the long-term gas processing, gathering and compression agreement.
Period of deferment of significant costs, pending proved reserves
Maximum Deferment Period of Significant Costs Pending Determination of Proved Reserves
Represents the period of deferment of significant costs pending the determination of proved reserves.
This element represents that portion of equity (net assets) in the consolidated entity attributable, directly or indirectly, to the partners. This element excludes noncontrolling (minority) interests, if any.
Members' equity
Members Equity [Member]
Profits Interests Awards
Entity Well-known Seasoned Issuer
Profits Interests Awards
The entire disclosure pertaining to membership interests awards and its details.
Membership Interests Awards Disclosure [Text Block]
Entity Voluntary Filers
Profits interests awards
Represents information pertaining to membership interests awards.
Membership Interests Awards [Member]
Entity Current Reporting Status
NGLs and oil
Represents information pertaining to natural gas liquid and crude oil.
Natural Gas Liquid Reserves and Oil Reserves [Member]
Entity Filer Category
Natural Gas Liquids Revenues
Revenue from sale of natural gas liquids.
Natural gas liquids sales
Entity Public Float
Natural gas
Natural Gas [Member]
A mixture of hydrocarbon gases that occurs with petroleum deposits, principally methane together with varying quantities of ethane, propane, butane, and other gases, and is used as a fuel and in the manufacture of organic compounds.
Entity Registrant Name
Represents the number of offset locations away from productive wells that includes drilling locations and are reasonably certain of containing proved undeveloped reserves.
Number of Offset Locations Away from Productive Wells for Proved Undeveloped Reserves
Number of offset locations away from productive wells for proved undeveloped reserves
Entity Central Index Key
Represents the NYMEX indices.
NYMEX [Member]
NYMEX
NYMEX WTI [Member]
Represents the NYMEX-WTI indices.
NYMEX-WTI
Offsetting Assets and Liabilities [Line Items]
Gross amounts of recognized derivative assets and liabilities and the resulting net amounts
Disclosure of information about derivative and financial assets and liabilities that are subject to offsetting, including enforceable master netting arrangements.
Offsetting Assets and Liabilities [Table]
Entity Common Stock, Shares Outstanding
Oil and Gas Delivery Commitments and Contracts, Remaining Contractual Volume Rigs
Rigs committed
Total number of rigs committed under existing contracts or agreements.
This element represents the aggregate revenue during the period related to oil business activities.
Oil sales
Oil Revenue
Other areas
Represents information pertaining to other areas.
Others [Member]
Payments to Acquired Proved Property
Additions to proved properties
The cash outflow during the reporting period for purchase of mineral interests in proved oil and gas properties for use in the normal oil and gas operations and not intended for resale.
Period of Average Pricing to Estimate Proved Reserves
Period of average prices considered to calculate estimated proved reserves
Represents the period of average pricing considered to calculate estimated proved reserves.
Period of Unweighted First Day of Month Average Prices Applied to Compute Future Cash Inflows
Period of unweighted first day of the month average prices used to compute future cash inflows
Represents the period of unweighted first day of the month average prices used to compute future cash inflows.
Piceance Basin and Arkoma Properties [Member]
Piceance Basin and Arkoma Basin
Represents information pertaining to Piceance Basin and Arkoma properties.
Piceance Basin [Member]
Piceance Basin
Represents information pertaining to Piceance Basin.
Proceeds from Settled Derivative Instruments Operating Activities
Cash receipts (payments) for settled derivatives
The cash inflow provided by settled derivative instruments during the period, which are classified as operating activities.
The cash inflow provided by settled derivative instruments during the period, which are classified as operating activities relating to discontinued operations.
Proceeds from Settled Derivative Instruments Operating Activities Discontinued Operations
Cash receipts for settled derivatives - discontinued operations
Proved Developed and Undeveloped Reserves [Abstract].
Oil and Gas Reserves
Proved Developed and Undeveloped Reserves Extensions Discoveries and Additions Energy
Extensions, discoveries and other additions
Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.
The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable.
Balance at the end of the period
Proved Developed and Undeveloped Reserves Net Energy
Balance at the beginning of the period
Proved Developed and Undeveloped Reserves Production Energy
Production
Production of proved reserves.
Proved Developed and Undeveloped Reserves Purchases of Minerals in Place Energy
Purchase of reserves
Purchase of minerals in place.
Proved Developed and Undeveloped Reserves Revisions of Previous Estimates Increase (Decrease) Energy
Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors.
Revisions
Proved Developed and Undeveloped Reserves Sales of Minerals in Place Energy
Sale of reserves in place
Sales of minerals in place.
Sales of proved reserves
Document Fiscal Year Focus
Scheduled drilling period for proved undeveloped reserves
Represents the scheduled drilling period for proved undeveloped reserves.
Proved Undeveloped Reserves Drilling Scheduled Period
Document Fiscal Period Focus
Revenue distributions payable
Revenue Distributions Payable, Current
This element represents the portion of revenue payable to joint interest owner, out of revenue earned from goods or services that have been delivered or sold in the normal course of joint ventured business.
Risks and Uncertainties [Policy Text Block]
Risks and Uncertainties
Disclosure of accounting policy for risks and uncertainties.
Schedule of Components of Income Tax Expense (Benefit) Including Discontinued Operations [Table Text Block]
Schedule of income tax expense (benefit) allocated to continuing and discontinued operations
Tabular disclosure of the components of income tax expense (benefits).
Tabular disclosure of pertinent information about outstanding fixed price natural gas swaps including notional amount, hedged price and term.
Schedule of Derivative Instruments Commodity Derivatives [Table Text Block]
Schedule of outstanding commodity derivatives
Schedule of Gross Amounts of Recognized Derivative Assets and Liabilities Amounts Offset under Netting Arrangements with Counterparties and Resulting Net Amounts [Table Text Block]
Schedule of gross amounts of recognized derivative assets and liabilities, the amounts offset under netting arrangements with counterparties, and the resulting net amounts
Tabular disclosure of derivative and other financial assets and liabilities that are subject to offsetting, including master netting arrangements.
Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities Fiscal Year Maturity [Table Text Block]
Schedule of proved developed and undeveloped reserves by fiscal year maturity
Tabular disclosure of the net quantities of an enterprise's interests in proved developed and undeveloped reserves of (a) crude oil (including condensate and natural gas liquids), (b) natural gas (including coal bed methane), (c) synthetic oil, (d) synthetic gas, and (e) other nonrenewable natural resources, by fiscal year maturity.
5.375% senior notes due 2021
Represents 5.375 percent senior notes due in 2021.
Senior Notes 5.375 Percent Due 2021 [Member]
Senior Notes 6.00 Percent Due 2020 [Member]
6.00% senior notes due 2020
Represents 6.00 percent senior notes due in 2020.
Senior Notes 7.25 Percent Due 2019 [Member]
7.25% senior notes due 2019
Represents 7.25 percent senior notes due in 2019.
Represents 9.00 percent senior notes.
Senior Notes 9.00 Percent [Member]
9.00% senior note
9.375% senior notes due 2017
Represents 9.375 percent senior notes due in 2017.
Senior Notes 9.375 Percent Due 2017 [Member]
Legal Entity [Axis]
Members' equity of Antero Resources LLC
Stockholders' Equity, Excluding Accumulated Deficit
This element represents total of all Members' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity excluding accumulated earnings (deficit) which are attributable to the parent. The amount of the economic entity's members' equity attributable to the parent excludes the amount of members' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
Document Type
Term Calendar 2014 [Member]
Represents the derivatives contract term of calendar year 2014.
Year ending December 31, 2014
Summary of Significant Accounting Policies
Term Calendar 2015 [Member]
Represents the derivatives contract term of calendar year 2015.
Year ending December 31, 2015
Year ending December 31, 2016
Term Calendar 2016 [Member]
Represents the derivatives contract term of calendar year 2016.
Term Calendar 2017 [Member]
Represents the derivatives contract term of calendar year 2017.
Year ending December 31, 2017
Term Calendar 2018 [Member]
Year ending December 31, 2018
Represents the derivatives contract term of calendar year 2018.
Pre-Effective Amendment Number
Term Calendar 2019 [Member]
Year ending December 31, 2019
Represents the derivatives contract term of calendar year 2019.
Toronto Dominion Bank [Member]
Toronto Dominion Bank
Represents information pertaining to Toronto Dominion Bank, a counterparty to the derivative contract.
Unamortized Discount Premium [Member]
Net unamortized premium
Represents the amount of debt discount (net of debt premium) that is yet to be amortized.
Net premium
Unrealized Losses on Derivative Instruments Net Discontinued Operations
Represents the net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period relating to discontinued operations.
Derivative fair value gains - discontinued operations
Wells Fargo [Member]
Represents Wells Fargo, a counterparty to the derivative contract.
Wells Fargo
Purchase Price of Divestiture
Purchase Price
Reflects the purchase price associated with the divestiture.
Interest rate derivative fair value loss
The amount of net gains and losses recognized in income during the period on interest rate derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on interest rate derivative instruments not designated as hedging instruments.
Derivative Instruments Gain (Loss) Recognized on Interest Rate Derivative Instrument in Income Net
Other Property Plant and Equipment [Policy Text Block]
Other Property and Equipment
Disclosure of accounting policy for the impairment and disposal of long-lived assets excluding oil and gas properties.
Impairment of proved properties
Represents the expense recorded to reduce the value of oil and gas assets consisting of proved properties as the estimate of future successful production from these properties is reduced.
Impairment of Oil and Gas Properties Proved
Represents the aggregate amount of write-downs for impairments recognized during the period for long-lived assets other than oil and gas properties.
Impairment of Long Lived Assets other than Properties Oil and Gas Properties
Impairment of long-lived assets other than oil and gas properties
Represents performance revisions resulting in decrease of proven reserves.
Decrease in Proved Reserves due to Performance Revisions
Decrease in proved reserves due to performance revisions
Increase in Proved Reserves due to Execution of Gas Processing Agreements
Represents increase of proven reserves due to execution of the gas processing agreements.
Increase in proved reserves due to execution of the gas processing agreements
Corporate Reorganization and Initial Public Offering [Table]
Disclosure pertaining to corporate reorganization and Initial Public Offering (IPO).
Antero Resources LLC [Member]
Antero Resources LLC
Represents information pertaining to Antero Resources LLC.
Antero Resources Investment LLC [Member]
Antero Investment
Represents information pertaining to Antero Resources Investment LLC.
Corporate Reorganization and Initial Public Offering [Line Items]
Corporate reorganization and initial public offering
Number of Shares of Common Stock Sold During Period
Number of shares of common stock sold
Represents the number of shares of common stock of the entity sold.
Exploration and Production [Member]
Exploration and production
Represents information pertaining to exploration and production segment.
Schedule of Share Based Compensation by Share Based Payment Award Restricted Stock Award Activity [Table Text Block]
Summary of restricted stock and restricted stock unit awards activity
Tabular disclosure of the number, weighted-average grant date fair value and aggregate intrinsic value for restricted stock that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.
Schedule of Share Based Compensation by Share Based Payment Award Restricted Stock Expected to Vest Outstanding [Table Text Block]
Schedule of outstanding unvested restricted stock awards vesting schedule
Tabular disclosure of the number of restricted stock expected to vest at the date of the latest statement of financial position.
Share Based Compensation Arrangement by Share Based Payment Award Weighted Average Remaining Contractual Life [Abstract]
Weighted average remaining contractual life
Subsidiary Guarantors
Gathering, compression and water distribution
This element represents the aggregate revenue during the period related to gathering and water distribution.
Gathering and Water Distribution Revenue
Redemption Premium Percentage
Make-hole premium percentage
Premium percentage paid on redemption of notes.
Make-hole premium (as a percent)
Gathering pipelines, compressor stations, and fresh water distribution systems
Represents information pertaining to the gathering pipelines, compressor stations, and fresh water distribution systems.
Gathering Pipelines Compressor Stations and Fresh Water Distribution [Member]
Capitalized Costs Fresh Water Distribution Systems
Fresh water distribution systems
Represents the capitalized costs of which include those incurred to fresh water distribution systems that are not yet installed.
Gathering Pipelines Compressor Stations and Fresh Water Distribution Systems [Policy Text Block]
Gathering Pipelines, Compressor Stations, and Fresh Water Distribution Systems
Disclosure of accounting policy for gathering pipelines, compressor stations, and fresh water distribution systems.
Citigroup [Member]
Citigroup
Represents Citigroup, a counterparty to the derivative contract.
Represents the cash outflow for loan and debt issuance costs and gains (losses) on extinguishment of debt.
Payments of Financing Costs and Gains (Losses) on Extinguishment of Debt
Payments of deferred financing costs and redemption premiums on early extinguishment of debt
Accounts receivable - trade, net of allowance for doubtful accounts of $1,251 in 2013 and 2014
Accounts Receivable, Net, Current
Gathering and Compression [Member]
Gathering and compression
Represents information pertaining to the Gathering and Compression segment.
Sharebased Compensation Arrangement by Sharebased Payment Award Equity Instruments Other than Options Aggregate Intrinsic Value Granted
Granted
Intrinsic value of equity-based compensation awards granted. Excludes stock and unit options.
Intrinsic value of equity-based compensation awards forfeited. Excludes stock and unit options.
Sharebased Compensation Arrangement by Sharebased Payment Award Equity Instruments Other than Options Aggregate Intrinsic Value Forfeited
Forfeited
Debt Instrument Redemption Price Percentage of Principal Amount and Accrued Interest Redeemed
Percentage of the principal amount of the notes, plus accrued interest of the debt instrument redeemed
Percentage of principal amount plus accrued interest of debt redeemed.
Share Based Compensation Arrangement by Share Based Payment Award Options Weighted Average Grant Date Fair Value
Weighted average grant date fair value
Represents the weighted average grant date fair value.
Represents information pertaining to 5.125 percent senior subordinated notes due in 2022.
Senior Subordinated 5.125 Percent Notes due 2022 [Member]
5.125% senior subordinated notes due 2022
Senior Notes 5.125 Percent Due 2022 [Member]
5.125% senior notes due 2022
Represents 5.125 percent senior notes due in 2022.
Debt Instrument Redemption Period on or after 1 June, 2017 [Member]
On or after June 1, 2017
Represents the period on or after June 1, 2017.
Debt Instrument Redemption Period on or after 1 June, 2020 [Member]
On or after June 1, 2020
Represents the period on or after June 1, 2020.
Debt Instrument Redemption Period on or before 1 June, 2015 [Member]
On or before June 1, 2015
Represents the period on or before June 1, 2015.
Debt Instrument Redemption Period before 1 June, 2017 [Member]
Prior to June 1, 2017
Represents the period before June 1, 2017.
Debt Instrument Redemption Period on or before 1 November 2014 [Member]
On or before November 1, 2014
Represents the period before November 1, 2014.
Debt Instrument Redemption Period before 1 May 2016 [Member]
Control prior to May 1, 2016
Represents the period before May 1, 2016.
Midstream Credit Facility [Member]
Midstream Facility
Represents information pertaining to midstream credit facility.
Schedule of Derivative Instruments Commodity Derivatives Basis Differential Positions which Settle on Pricing Index to Basis Differential of TCO to NYMEX Henry Hub Price [Table Text Block]
Tabular disclosure of commodity derivatives basis differential positions which settle on the pricing index to basis differential of Columbia Gas (TCO) to the NYMEX Henry Hub natural gas price.
Tabular disclosure of pertinent information about commodity derivatives basis differential positions which settle on the pricing index to basis differential of Columbia Gas (TCO) to the NYMEX Henry Hub natural gas price.
Basis Differential Positions [Member]
Basis differential positions
Represents the basis differential positions which settle on the pricing index to basis differential of Columbia Gas (TCO) to the NYMEX Henry Hub natural gas price.
Three months ending September 30, 2014
Represents the derivatives contract term of three months ended September 30, 2014.
Term Three Months Ended 30, September 2014 [Member]
Term Three Months Ended 31, December 2014 [Member]
Three months ending December 31, 2014
Represents the derivatives contract term of three months ended December 31, 2014.
Marketing Revenue
Marketing
Revenues related to sales of third-party natural gas and oil products, as well as the release of excess firm transportation capacity to other parties.
Marketing Revenues and Expenses [Policy Text Block]
Marketing Revenues and Expenses
Disclosure of accounting policy for the marketing revenues and expenses.
Marketing Expenses
Marketing
Costs related to the purchase of third-party natural gas and oil products, as well as costs associated with excess firm transportation capacity.
Accounts payable
Accounts Payable, Current
Natural Gas, NGL and Oil Revenues
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accretion of discount
Accretion of Discount
Accretion Expense
Accretion expense
Accretion expense
Accrued revenue
Accrued Fees and Other Revenue Receivable
Accrued liabilities
Accrued Liabilities, Current
Less accumulated depletion, depreciation, and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Additional paid-in capital
Additional Paid in Capital
Additional paid-in capital
Additional Paid-in Capital [Member]
Adjustment to reconcile net loss to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Stock compensation
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options
Issuance of common stock in public offering, net of underwriter discounts and offering costs
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs
Additional stock compensation to be recognized over the remaining service period
Allocated Share-based Compensation Expense
Total expense, pre-tax
Accounts receivable - trade, allowance for doubtful accounts
Allowance for Doubtful Accounts Receivable, Current
Amounts amortized and the write-off of previously deferred debt issuance costs
Amortization of Financing Costs
Asset Retirement Obligations
Asset Retirement Obligation Disclosure [Text Block]
Accretion of asset retirement obligations
Asset Retirement Obligation, Accretion Expense
Asset retirement obligations - beginning of period
Asset retirement obligations - end of period
Asset Retirement Obligations, Noncurrent
Asset Retirement Obligations
Asset Retirement Obligations, Policy [Policy Text Block]
Asset Retirement Obligations
Asset Retirement Obligations
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Obligations related to assets sold
Asset Retirement Obligation, Liabilities Settled
Asset retirement obligation
Obligations incurred
Obligations incurred
Asset Retirement Obligation, Liabilities Incurred
Total assets
Assets
Segment assets
Current assets:
Assets, Current [Abstract]
Assets
Assets [Abstract]
Total current assets
Assets, Current
Supplemental Information on Oil and Gas Producing Activities
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average Sales Price and Production Costs Per Unit of Production [Table]
Weighted average price of equivalent reserves (in dollar per share)
Average Sales Prices
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies
Basis of Presentation and Significant Accounting Policies [Text Block]
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Counterparty Name [Axis]
Gathering systems and facilities
Capitalized Costs, Wells and Related Equipment and Facilities
Net capitalized costs
Capitalized Costs, Oil and Gas Producing Activities, Net
Accumulated depreciation and depletion
Capitalized Costs, Accumulated Depreciation, Depletion, Amortization and Valuation Allowance Relating to Oil and Gas Producing Activities
Schedule of capitalized costs relating to oil and gas producing activities
Capitalized Costs Relating to Oil and Gas Producing Activities Disclosure [Table Text Block]
Proved properties
Capitalized Costs, Proved Properties
Capitalized Costs Relating to Oil and Gas Producing Activities
Capitalized Costs, Oil and Gas Producing Activities, Net [Abstract]
Total
Capitalized Costs, Oil and Gas Producing Activities, Gross
Unproved properties
Capitalized Costs, Unproved Properties
Cash and Cash Equivalents, Period Increase (Decrease)
Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Supplemental disclosure of noncash investing activities:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Commitments
Commitments Disclosure [Text Block]
Contingencies
Commitments and contingencies
Commitments and Contingencies
Contingencies
Commitments and Contingencies Disclosure [Text Block]
Commodity contracts
Commodity derivative
Commodity Contract [Member]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common Stock
Common Stock [Member]
Common stock, $0.01 par value; authorized - 1,000,000,000 shares; issued and outstanding - 262,049,659 shares
Common Stock, Value, Issued
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, authorized shares
Common Stock, Shares Authorized
Common stock, shares outstanding
Common Stock, Shares, Outstanding
Income tax expense from continuing operations
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Net deferred tax assets and liabilities
Components of Deferred Tax Assets and Liabilities [Abstract]
Concentration Risk Type [Domain]
Derivative Financial Instruments
Concentration Risk [Line Items]
Concentration Risk Benchmark [Domain]
Concentrations of Credit Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentration Risk Type [Axis]
Concentration Risk [Table]
Concentration Risk Benchmark [Axis]
Sales to major customers (as a percent)
Concentration Risk, Percentage
Subsidiary Guarantors
Condensed Financial Statements [Text Block]
Condensed consolidated balance sheets
Condensed Balance Sheet Statements, Captions [Line Items]
Condensed Balance Sheet Statement [Table]
Consolidation Items [Domain]
Eliminations
Consolidation, Eliminations [Member]
Consolidation Items [Axis]
2015
Contractual Obligation, Due in Second Year
2018
Contractual Obligation, Due in Fifth Year
Schedule of future minimum payments for firm transportation agreements, drilling and compression facility obligations, and leases
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]
2017
Contractual Obligation, Due in Fourth Year
2014
Contractual Obligation, Due in Next Twelve Months
2016
Contractual Obligation, Due in Third Year
Thereafter
Contractual Obligation, Due after Fifth Year
Future minimum payments
Contractual Obligation, Fiscal Year Maturity [Abstract]
Total
Contractual Obligation
Schedule of costs incurred in certain oil and gas activities
Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure [Table Text Block]
Proved property
Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves
Unproved property
Costs Incurred, Acquisition of Unproved Oil and Gas Properties
Development costs
Costs Incurred, Development Costs
Exploration costs
Costs Incurred, Exploration Costs
Costs Incurred in Certain Oil and Gas Activities
Costs Incurred, Acquisition of Oil and Gas Properties [Abstract]
Total costs incurred
Costs Incurred, Acquisition of Oil and Gas Properties
Oil
Crude Oil [Member]
Current income tax expense (benefit)
Current Income Tax Expense (Benefit)
Customer concentration
Customer Concentration Risk [Member]
Derivatives designated as hedges for accounting purposes
Designated as Hedging Instrument [Member]
Description of variable rate basis
Debt Instrument, Description of Variable Rate Basis
Long- term Debt
Guarantees
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments [Table]
Senior notes issued
Debt Instrument, Face Amount
Debt Instrument, Redemption, Period [Domain]
Debt Instrument, Redemption, Period [Axis]
Basis spread on variable rate (as a percent)
Debt Instrument, Basis Spread on Variable Rate
Long-Term Debt
Senior notes redeemed
Debt Instrument, Repurchased Face Amount
Percentage of the principal amount of the debt instrument redeemed
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed
Interest rate (as a percent)
Debt Instrument, Interest Rate, Stated Percentage
Divestitures
Decrease Due to Sales of Minerals in Place
Deferred tax assets:
Deferred Tax Assets, Net of Valuation Allowance [Abstract]
Deferred Financing Costs
Deferred Charges, Policy [Policy Text Block]
Total deferred tax liabilities
Deferred Tax Liabilities, Gross
Unamortized deferred financing costs included in other long-term assets
Deferred Finance Costs, Noncurrent, Gross
Deferred Financing Costs
Deferred Finance Costs, Net [Abstract]
Deferred income tax expense (benefit)
Deferred Income Tax Expense (Benefit)
Deferred income tax expense
Capital loss carryforwards
Deferred Tax Assets, Capital Loss Carryforwards
Total deferred tax assets
Deferred Tax Assets, Gross
Other
Deferred Tax Assets, Other
Net deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance
Net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards
Minimum tax credit carryforward
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax
Valuation allowance
Deferred Tax Assets, Valuation Allowance
Deferred income tax liability
Deferred Tax Liabilities, Net, Noncurrent
Deferred income taxes
Net deferred tax liabilities
Deferred Tax Liabilities, Net
Deferred income tax liability
Deferred Tax Liabilities, Net, Current
Deferred income taxes
Deferred tax liabilities:
Deferred Tax Liabilities, Gross [Abstract]
Unrealized gains on derivative instruments
Deferred Tax Liabilities, Derivatives
Depletion, depreciation, and amortization
Depreciation expense
Depreciation, Depletion and Amortization
Noncurrent portion of fair value of derivative liability
Derivative Liability, Noncurrent
Derivative instruments
Total liability derivatives
Derivative Liability
Derivative instruments
Noncurrent portion of fair value of derivative assets
Derivative Asset, Noncurrent
Gross amounts offset on balance sheet
Derivative Asset, Fair Value, Gross Liability
Derivative Instruments
Fair value of derivative instruments
Derivative [Line Items]
Net derivatives
Derivative Assets (Liabilities), at Fair Value, Net
Gross amounts offset on balance sheet
Derivative Liability, Fair Value, Gross Asset
Derivative Instrument [Axis]
Derivative [Table]
Derivative Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Summary of realized and unrealized gains (losses) on derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments
Derivative instruments
Current portion of fair value of derivative assets
Derivative Asset, Current
Total asset derivatives
Derivative Asset
Derivative instruments
Current portion of fair value of derivative liability
Derivative Liability, Current
Gross amounts on balance sheet
Derivative Asset, Fair Value, Gross Asset
Gross amounts on balance sheet
Derivative Liability, Fair Value, Gross Liability
Derivative, by Nature [Axis]
Net derivative fair value gains
Derivative, Gain (Loss) on Derivative, Net
Number of derivative instruments held
Derivative, Number of Instruments Held
Derivative, Name [Domain]
Weighted average index price
Derivative, Swap Type, Average Fixed Price
Derivative Contract [Domain]
Summary of realized and unrealized gains (losses) on derivative instruments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Table]
Net derivative fair value gains
Derivative Financial Instruments
Derivatives, Policy [Policy Text Block]
Stock-Based Compensation
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Stock-Based Compensation
Income tax (expense) benefit
Discontinued operations and sale of discontinued operations
Discontinued Operation, Tax Effect of Discontinued Operation
Sale of Appalachian Gathering Assets
Discontinued operations, income tax expense
Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period
Gain on sale of discontinued operations
Loss on sale
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax
Annual net cash inflows
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Standardized Measure [Abstract]
10% annual discount for estimated timing of cash flows
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, 10 Percent Annual Discount for Estimated Timing of Cash Flows
Future net cash flows
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Net Cash Flows
Future cash inflows
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Cash Inflows
Future income tax expense
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Income Tax Expense
Future production costs
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Production Costs
Future development costs
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Development Costs
Standardized measure of discounted future net cash flows
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Standardized Measure
Results of operations and the loss on the sale of the assets
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Sale of Appalachian Gathering Assets
Sale of Piceance and Arkoma Properties - Discontinued Operations
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Amount distributed to members to cover the tax liabilities resulting from the sale of the Arkoma midstream assets
U.S Federal
Domestic Tax Authority [Member]
Due to subsidiary
Due to Related Parties, Noncurrent
Due to subsidiary
Due to Affiliate, Noncurrent
Earnings (loss) per common share:
Earnings Per Share, Basic [Abstract]
Earnings (loss) per common share - basic:
Earnings (loss) per common share - assuming dilution
Earnings Per Share, Diluted [Abstract]
Earnings (loss) per share - diluted:
Pro forma information:
Earnings Per Share, Pro Forma [Abstract]
Earnings (loss) per share
Earnings Per Share, Policy [Policy Text Block]
Earnings (loss) per common share (in dollars per share)
Earnings Per Share, Basic
Total (in dollars per share)
Loss per common share - assuming dilution (in dollars per share)
Earnings Per Share, Diluted
Total (in dollars per share)
Earnings (loss) per share
Earnings Per Share [Abstract]
U.S. Statutory federal income tax rate (as a percent)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Stock-based compensation expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock options
Employee Stock Option [Member]
Weighted average period for recognizing unrecognized stock-based compensation expense
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Unrecognized stock-based compensation expense
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options
Concentrations of Credit Risk
Revenue, Major Customer [Line Items]
Environmental Liabilities
Environmental Costs, Policy [Policy Text Block]
Investment in subsidiary
Equity Method Investments
Equity Component [Domain]
Exploration
Exploration Expense
Extensions, discoveries and other additions
Extensions, Discoveries, Additions and Improved Recovery, Less Related Costs
Measurement Frequency [Axis]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value, Hierarchy [Axis]
Recurring
Fair Value, Measurements, Recurring [Member]
Fair Value, Measurement Frequency [Domain]
Fair Value Measures
Fair Value Measurements
Fair Value Measurement, Policy [Policy Text Block]
Financial Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Instruments
Fair Value Hierarchy [Domain]
Level 2 market data
Significant other observable inputs (Level 2)
Fair Value, Inputs, Level 2 [Member]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Financial Instruments
Financial Instruments Disclosure [Text Block]
Loss on sale of assets
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
(Gain) loss on sale of assets
Gain (Loss) on Disposition of Assets
Gain recognized on the sale of assets
Loss on sale of assets
Gain (Loss) on Sale of Assets and Asset Impairment Charges
Commodity derivative fair value gains (losses)
Gain (Loss) on Sale of Commodity Contracts
Gain on sale of midstream assets
Gain (Loss) on Disposition of Other Assets
Gain on sale of gathering system
Loss on Early Extinguishment of Debt
Gains (Losses) on Extinguishment of Debt
Loss on early extinguishment of debt
Loss on early extinguishment of debt
Gathering Systems and Facilities
Gas Gathering and Processing Equipment [Member]
Gathering, compression, and transportation
Gathering, compression, processing, and transportation
Gas Gathering, Transportation, Marketing and Processing Costs
General and administrative (including stock compensation expense of $32,474 and $61,611 for three and six months ended June 30, 2014)
General and Administrative Expense
Guarantor Subsidiary
Guarantor Subsidiaries [Member]
Hedging Designation [Axis]
Hedging Designation [Domain]
Elimination of intersegment transaction
Intersegment Eliminations [Member]
Impairment of Long Lived Assets Other than Oil and Gas Properties
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Impairment of unproved properties
Impairment of Oil and Gas Properties
Continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Basic Share
Income (loss) from continuing operations
Income (Loss) from Continuing Operations Attributable to Parent
Income from continuing operations
Discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)
Income (loss) from continuing operations before income taxes and discontinued operations
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Income from continuing operations before income taxes and discontinued operations
Income Statement Location [Axis]
Income Taxes
Income Tax Authority [Domain]
Disposal Group Name [Axis]
Sale of Piceance and Arkoma Properties - Discontinued Operations
Sale of Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Diluted Share
Income Tax Authority [Axis]
Net income (loss)
Income Taxes
Income Tax Disclosure [Text Block]
Income Statement Location [Domain]
Discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]
Continuing operations
Total income tax expense from continuing operations
Provision for income tax (expense) benefit
Income Tax Expense (Benefit)
Income tax expense (benefit)
Change in valuation allowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Reconciliation of income tax expense from continuing operations differs from the amount that would be computed by applying the U.S. statutory federal income tax rate to consolidated income
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Nondeductible stock compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount
Net income (loss) from discontinued operations
Income from sale of discontinued operations, net of income tax expense of $1,354
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Income (loss) from discontinued operations
Discontinued operations
Federal income tax expense
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Income Taxes
Income Tax, Policy [Policy Text Block]
State income tax expense , net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent [Abstract]
Discontinued operations:
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Noncontrolling interest in net income of consolidated subsidiary
Accounts receivable
Increase (Decrease) in Accounts Receivable
Other
Increase (Decrease) in Other Current Assets and Liabilities, Net
Accounts payable
Increase (Decrease) in Accounts Payable
Accrued liabilities
Increase (Decrease) in Accrued Liabilities
Changes in assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Net changes in future development costs
Changes in Estimated Future Development Costs
Net change in income taxes
Changes in Future Income Tax Expense Estimates on Future Cash Flows Related to Proved Oil and Gas Reserves
(Increase) decrease in notes receivable
Increase (Decrease) in Notes Receivables
Other current assets
Increase (Decrease) in Other Operating Assets
Acquisitions
Increase Due to Purchases of Minerals in Place
Changes in Standardized Measure of Discounted Future Net Cash Flow
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward]
Proved developed and undeveloped reserves:
Proved Developed and Undeveloped Reserves [Abstract]
Increase (Decrease) in Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Interest
Interest Expense
Interest expense
Cash paid during the period for interest
Interest Paid
Interest rate swap agreements
Interest Rate Swap [Member]
Investment in subsidiary
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
IPO [Member]
Initial Public Offering
IPO
Letters of Credit Outstanding, Amount
Outstanding letters of credit
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Weighted average interest rate (as a percent)
Long-term Debt, Weighted Average Interest Rate
Rental expense under operating leases
Operating Leases, Rent Expense
Total current liabilities
Liabilities, Current
Current liabilities
Total liabilities and stockholders' equity
Liabilities and Equity
Current liabilities:
Liabilities, Current [Abstract]
Total liabilities
Liabilities
Long-term liabilities:
Liabilities, Noncurrent [Abstract]
Liabilities and Equity
Liabilities and Equity [Abstract]
Liabilities and Stockholders' Equity
Commitment fees on the unused portion (as a percent)
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Maximum amount of the Credit Facility
Line of Credit Facility, Maximum Borrowing Capacity
Face amount of the Credit Facility
Outstanding balance
Line of Credit Facility, Amount Outstanding
Bank credit facility
Line of Credit [Member]
Credit Facility
Lender commitments
Line of Credit Facility, Current Borrowing Capacity
Notes Receivable
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Commitments
Long-term Commitment (Excluding Unconditional Purchase Obligation) [Abstract]
Long-Term Debt
Long-term Debt [Text Block]
Long-term debt
Long-term debt
Notes Payable, Noncurrent
Customer [Axis]
Marketing
Marketing Expense
Maximum
Maximum [Member]
Minimum
Minimum [Member]
Ownership percentage
Noncontrolling Interest, Ownership Percentage by Parent
Customer [Domain]
NGLS
Natural Gas Liquids [Member]
Natural gas
Natural Gas. [Member]
Natural gas sales
Natural Gas Production Revenue
Net changes in prices and production costs
Net Increase (Decrease) in Sales and Transfer Prices and Production Costs
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Cash flows used in investing activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flows from financing activities:
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by financing activities
Net Cash Provided by (Used in) Financing Activities
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Net income (loss) and comprehensive income (loss)
Net Income (Loss) Attributable to Parent
Net income and comprehensive income
Net loss and comprehensive loss
Other expenses:
Nonoperating Income (Expense) [Abstract]
Unsecured notes payable assumed in the business acquisition
Notes Assumed
Fair value of senior notes
Notes Payable, Fair Value Disclosure
Notes receivable - long-term portion
Notes, Loans and Financing Receivable, Net, Noncurrent
Long-term debt
Notes Payable
Notes receivable - short-term portion
Notes, Loans and Financing Receivable, Net, Current
Notes receivable from a drilling contractor
Financing Receivable, Net
Current debt
Less amounts due within one year
Notes Payable, Current
Number of operating segments
Number of Operating Segments
Noncontrolling interest
Noncontrolling Interest [Member]
Sale of midstream subsidiary
Noncontrolling Interest, Decrease from Deconsolidation
Derivatives not designated as hedges for accounting purposes
Not Designated as Hedging Instrument [Member]
Commodity derivative liabilities
Offsetting Derivative Liabilities [Abstract]
Commodity derivative assets
Offsetting Derivative Assets [Abstract]
Sales of oil, natural gas, and natural gas liquids
Oil and Gas Revenue
Natural gas, NGLs, and oil sales
Natural gas properties, at cost (successful efforts method):
Oil and Gas Property, Successful Effort Method, Gross [Abstract]
Oil and condensate
Oil [Member]
Supplemental Information on Oil and Gas Producing Activities (Unaudited)
Oil and Gas Exploration and Production Industries Disclosures [Text Block]
Lease operating
Oil and Gas Production Expense
Oil and Gas Properties
Oil and Gas Property [Abstract]
Supplemental Information on Oil and Gas Producing Activities (Unaudited)
Oil and Gas Delivery Commitments and Contracts [Axis]
Oil and Gas Delivery Commitments and Contracts, Oil Producing Property [Domain]
Oil and Gas Properties
Oil and Gas Properties Policy [Policy Text Block]
Schedule of weighted average prices used to estimate the Company's total equivalent reserves
Oil and Gas Net Production, Average Sales Price and Average Production Costs Disclosure [Table Text Block]
Operating expenses:
Operating Expenses [Abstract]
Total operating expenses
Operating Expenses
Total operating expenses
Operating income (loss)
Income (loss) from discontinued operations before income taxes
Operating Income (Loss)
Operating income (loss)
Operating Loss Carryforwards [Table]
Income Taxes
Operating Loss Carryforwards [Line Items]
Operating segments
Operating Segments [Member]
Net operating loss carryforward
Operating Loss Carryforwards
Organization
Organization
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Other assets, net
Other Assets, Noncurrent
Other long-term assets
Other
Other Assets, Current
Other property and equipment
Other Capitalized Property Plant and Equipment [Member]
Other
Other Assets, Miscellaneous, Current
Other
Other Noncash Expense
Total other expenses
Other Nonoperating Income (Expense)
Other long-term liabilities
Other Liabilities, Noncurrent
Other
Other
Other Liabilities, Current
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Position [Domain]
Position [Axis]
Products and Services [Domain]
Antero Resources LLC
Parent Company [Member]
Parent Company
Total Antero equity
Parent [Member]
Proceeds from units issued
Issuance of member units in business acquisition
Partners' Capital Account, Acquisitions
Distribution to members
Partners' Capital Account, Distributions
Change in other assets
Payments for (Proceeds from) Other Investing Activities
Changes in other assets
Additions to gathering systems and facilities
Payments to Acquire Oil and Gas Equipment
Additions to unproved properties
Payments to Acquire Oil and Gas Property
Net assets of business acquired, net of cash of $170
Capital expenditures for segment assets
Payments to Acquire Property, Plant, and Equipment
Additions to properties and equipment
Additions to other property and equipment
Payments to Acquire Other Property, Plant, and Equipment
Distribution to members
Payments of Capital Distribution
Payments of deferred financing costs
Payments of Financing Costs
Drilling and completion costs
Payments to Explore and Develop Oil and Gas Properties
Additions to fresh water distribution systems
Payments to Acquire Water Systems
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Preferred stock, $0.01 par value; authorized - 50,000,000 shares; none issued
Preferred Stock, Value, Issued
Preferred stock, shares issued
Preferred Stock, Shares Issued
Preferred stock, authorized shares
Preferred Stock, Shares Authorized
Development costs incurred during the period
Previously Estimated Development Costs Incurred During Period
Fair value of commodity derivative contracts
Fixed price derivative assets
Price Risk Derivative Assets, at Fair Value
Reclassifications
Reclassification, Policy [Policy Text Block]
Proceeds from the sale adjusted for expenses of the sale and estimated income, expenses, and capital costs
Proceeds from Divestiture of Businesses
Other
Proceeds from (Payments for) Other Financing Activities
Borrowings on bank credit facility, net
Proceeds from (Repayments of) Lines of Credit
Payments on bank credit facility, net
Issuance of senior notes
Proceeds from Issuance of Unsecured Debt
Proceeds from Issuance Initial Public Offering
Issuance of common stock in IPO
Issuance of common stock
Borrowings (repayments) on bank credit facility, net
Net proceeds from issuance of additional shares of common stock
Net proceeds from sale of shares of common stock
Proceeds from Issuance of Common Stock
Proceeds from asset sales
Proceeds from Sale of Productive Assets
Products and Services [Axis]
Production and ad valorem taxes
Production Tax Expense
Net income (loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Other property and equipment
Property, Plant and Equipment, Other, Gross
Estimated useful life
Property, Plant and Equipment, Estimated Useful Lives
Property and equipment:
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross
Property, Plant and Equipment, Gross
Office and equipment
Property Subject to Operating Lease [Member]
Property and equipment, net
Property, Plant and Equipment, Net
Property and equipment, net
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Axis]
Other Property and Equipment
Property, Plant and Equipment [Line Items]
Sale of reserves in place
Proved Developed and Undeveloped Reserves, Sales of Minerals in Place
Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table]
Revisions
Proved Developed and Undeveloped Reserves, Revisions of Previous Estimates
Extensions, discoveries and other additions
Proved Developed and Undeveloped Reserves, Extensions, Discoveries, and Additions
Balance at the beginning of the period
Balance at the end of the period
Proved Developed and Undeveloped Reserves, Net
Proved developed reserves
Proved Developed Reserves (Volume)
Proved developed reserves
Proved Developed Reserves (Energy)
Proved undeveloped reserves
Proved Undeveloped Reserve (Volume)
Proved undeveloped reserves
Proved Undeveloped Reserves (Energy)
Production
Proved Developed and Undeveloped Reserves, Production
Proved properties
Proved Oil and Gas Property, Successful Effort Method
Purchase of reserves
Proved Developed and Undeveloped Reserves, Purchases of Minerals in Place
Quarterly Financial Information (Unaudited)
Quarterly Financial Information [Text Block]
Quarterly Financial Information (Unaudited)
Reportable legal entity
Reportable Legal Entities [Member]
Range [Axis]
Range [Domain]
Notes Receivable
Unrecognized tax benefits
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Redemption of debts out of the proceeds from its IPO
Repayments of Debt
Repayments of Unsecured Debt
Retirement of senior notes
Repayment of senior notes
Counterparty Name [Domain]
Petroleum Reserves [Axis]
Oil and gas reserves
Reserve Quantities [Line Items]
Restricted stock units
Restricted Stock Units (RSUs) [Member]
Restricted stock awards
Restricted Stock [Member]
Schedule of results of operations (including discontinued operations) for oil and gas producing activities
Results of Operations for Oil and Gas Producing Activities Disclosure [Table Text Block]
Exploration expenses
Results of Operations, Exploration Expense
Depreciation, depletion, and amortization expense for oil and gas properties
Results of Operations, Depreciation, Depletion, Amortization and Accretion
Production expenses
Results of Operations, Production or Lifting Costs
Revenues
Results of Operations, Revenue from Oil and Gas Producing Activities
Impairment of unproved properties
Results of Operations, Impairment of Oil and Gas Properties
Results of operations before income tax expense (benefit)
Results of Operations, Income before Income Taxes
Income tax (expense) benefit
Results of Operations, Income Tax Expense
Results of operations
Results of Operations, Oil and Gas Producing Activities Net Income (Excluding Corporate Overhead and Interest Costs)
Depreciation and depletion
Results of Operations, Depreciation, Depletion and Amortization, and Valuation Provisions
Results of Operations for Oil and Gas Producing Activities
Results of Operations, Oil and Gas Producing Activities Net Income (Excluding Corporate Overhead and Interest Costs) [Abstract]
Operating expenses:
Results of Operations, Expense from Oil and Gas Producing Activities [Abstract]
Accumulated (deficit) earnings
Retained Earnings [Member]
Accumulated earnings
Accumulated earnings
Retained Earnings (Accumulated Deficit)
Natural Gas, NGL and Oil Revenues
Revenue Recognition, Sales of Goods [Policy Text Block]
Revenue
Total revenue
Revenues
Revenue:
Revenues [Abstract]
Revisions of Previous Quantity Estimates
Revisions of previous quantity estimates
Stand-alone revolving note
Revolving Credit Facility [Member]
Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Expected life
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Aggregate intrinsic value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract]
Total awarded and unvested at the beginning of the period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested
Total awarded and unvested at the end of the period
Contractual life
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Outstanding at the end of the period
Outstanding at the beginning of the period
Sales and Transfers of Oil and Gas Produced, Net of Production Costs
Sales of oil and gas, net of productions costs
Sales [Member]
Revenue
Sales
Sales Revenue, Net [Member]
Forecast
Scenario, Forecast [Member]
Scenario, Unspecified [Domain]
Schedule of reconciliation of asset retirement obligations
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Schedule of changes in standardized measure of discounted future net cash flow
Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows [Table Text Block]
Schedule of information regarding weighted average fair value of options granted and the assumptions used to determine fair value
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Schedule of income tax expense from continuing operations
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of condensed consolidated balance sheets
Condensed Balance Sheet [Table Text Block]
Schedule of reconciliation of income tax expense from continuing operations
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of net deferred tax assets and liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of reconciliation of beginning and ending amount of unrecognized tax benefits
Summary of stock option activity
Schedule of Share-based Compensation, Activity [Table Text Block]
Schedule of quarterly financial information
Schedule of Quarterly Financial Information [Table Text Block]
Schedule of the Company's sales to major customers including sales in discontinued operations (purchases in excess of 10% of total sales)
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Schedule of long-term debt
Schedule of Long-term Debt Instruments [Table Text Block]
Schedule of results of operations and the loss on the sale of the Piceance Basin and Arkoma Basin assets shown as discontinued operations on the accompanying Consolidated Statement of Operations and Comprehensive Income (Loss)
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Schedule of Revenue by Major Customers, by Reporting Segments [Table]
Schedule of stock-based compensation expense
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Schedule of operating results and assets of reportable segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Property, Plant and Equipment [Table]
Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table Text Block]
Schedule of proved developed and undeveloped reserves
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Summary of the fair values of derivative instruments, which are not designated as hedges for accounting purposes
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Summary of derivative fair value gains (losses)
Derivative Instruments, Gain (Loss) [Table Text Block]
Operating results and assets of reportable segments
Segment Reporting Information [Line Items]
Segments [Domain]
Industry Segment and Geographic Information
Segment Information
Industry Segments and Geographic Information
Segment Reporting, Policy [Policy Text Block]
Segment Information
Segment Reporting Disclosure [Text Block]
Discontinued operations
Discontinued Operations [Member]
Additional disclosures
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Summary of the status of the net membership interests outstanding and changes during the period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of shares
Weighted average exercise price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Options granted (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Options cancelled (in dollars per share)
Total granted and unvested at the beginning of the period (in shares)
Total awarded and unvested at the end of the period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Stock compensation expense recognized
Share-based Compensation
Stock compensation
Vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Weighted average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Options granted (in shares)
Profits Interests Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation
Total granted and unvested at the beginning of the period (in dollars per share)
Total awarded and unvested at the end of the period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Share-based Compensation [Abstract]
Stock Compensation Charge in Connection with the Reorganization
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Forfeited (in dollars per share)
Forfeited/canceled (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited (in shares)
Options expired (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Options exercised (in dollars per share)
Dividend yield (as a percent)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Options expired (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period
Options cancelled (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Vested (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Additional disclosures
Number of shares available for future grant under the Plan
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Volatility (as a percent)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Number of stock-based compensation awards authorized
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Risk-free interest rate (as a percent)
Weighted-average assumptions used to calculate fair value of stock options granted
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Weighted average fair value of options granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share)
Outstanding at the end of the period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Exercisable (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price
Outstanding at the beginning of the period (in shares)
Outstanding at the end of the period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Exercisable (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number
Expected to vest (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Outstanding at the end of the period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Outstanding at the beginning of the period
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Equity Award [Domain]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Expected to vest (in dollars per share)
Expected to vest
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Common stock price (in dollars per share)
Shares Issued, Price Per Share
Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Other
Other changes
End of period
Beginning of period
Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves
Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves Disclosure [Table Text Block]
Schedule of standardized measure of discounted future net cash flows attributable to proved reserves
Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Period Increase (Decrease)
Net increase (decrease)
State
State and Local Jurisdiction [Member]
Scenario [Axis]
Statement [Table]
Condensed Consolidated Statements of Cash Flows
Statement [Line Items]
Statement
Condensed Consolidated Statements of Equity
Condensed Consolidated Statements of Cash Flows
Equity Components [Axis]
Condensed Consolidated Balance Sheets
Segments [Axis]
Merger of Antero Resources LLC and Antero Resources Corporation
Stock Issued During Period, Value, Acquisitions
Options exercised (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Number of additional shares of common stock issued
Sale of common stock (in shares)
Stock Issued During Period, Shares, New Issues
Issuance of 37,674,659 shares of $0.01 par value common stock in public offering, net of underwriter discounts and offering costs of $79,112
Stock Issued During Period, Value, New Issues
Stockholders' equity:
Stockholders' Equity Attributable to Parent [Abstract]
Balances
Balances
Total stockholders' equity
Stockholders' Equity Attributable to Parent
Stockholders' equity
Subsequent event
Subsequent Event [Member]
Subsequent Event Type [Domain]
Subsequent Event Type [Axis]
Subsidiary Issuer [Member]
Antero Finance
Supplemental disclosure of cash flow information:
Supplemental Cash Flow Information [Abstract]
Swaps
Commodity swaps
Swap [Member]
Transaction Type [Axis]
Transaction [Domain]
Production and ad valorem taxes
Taxes, Miscellaneous
Type of Arrangement and Non-arrangement Transactions [Axis]
Type of Reserve [Domain]
Unproved properties
Unproved Oil and Gas Property, Successful Effort Method
Unrealized gains on interest derivative
Derivative fair value (gains) losses
Unrealized Gain (Loss) on Derivatives and Commodity Contracts
Revised estimate of unrecognized tax position
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Revised estimate of unrecognized tax position
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions
Unrecognized tax benefits impacting effective tax rate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Balance at beginning of year
Balance at end of year
Unrecognized Tax Benefits
Interest or penalties that have been accrued on unrecognized tax benefits
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Vesting [Axis]
Vesting [Domain]
Fresh Water Distribution
Water Distribution [Member]
Fresh water distribution systems
Weighted average number of shares outstanding
Weighted Average Number of Shares Outstanding, Diluted
Deferred financing costs charged to loss on early extinguishment of debt
Write off of Deferred Debt Issuance Cost