Dividends, Share Repurchases, Earning Per Share and Accumulated Other Comprehensive Income [Abstract] Dividends, Share Repurchases, Earning Per Share and Accumulated Other Comprehensive Income [Abstract] Schedule of antidilutive securities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule Of Earnings Per Share Basic And Diluted [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Supplemental Disclosure [Abstract] -- None. No documentation exists for this element. -- Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land and Building [Member] Land and Building [Member] Aircraft And Equipment [Member] Aircraft And Equipment [Member] Includes all aircraft and equipment. Legal Entity [Axis] Legal Entity [Axis] Entity Domain Entity [Domain] Parent Company [Member] Parent Company [Member] Guarantor Subsidiaries [Member] Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Consolidations, Eliminations [Member] Consolidation, Eliminations [Member] Condensed Financial Statements, Captions [Line Items] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts Receivable, Net, Current Accounts Receivable, Net, Current Inventories Inventory, Net Assets held for sale Assets Held-for-sale, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Intercompany investment Intercompany investment Line item represents intercompany investment that eliminates in consolidation. Investment in unconsolidated affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Intercompany notes receivable Due from Related Parties, Noncurrent Total property and equipment, at cost Property, Plant and Equipment, Gross Less - Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Net Property, Plant and Equipment, Net Goodwill Goodwill Other assets Other Assets, Noncurrent Total assets Assets Accounts payable Accounts Payable, Current Accrued Liabilities, Current Accrued Liabilities, Current Current deferred taxes Deferred Tax Liabilities, Net, Current Short-term borrowings and current maturities of long-term debt Long-term Debt, Current Maturities Deferred sale leaseback advance Deferred Sale Leaseback Advance - Current Amount received for progress payments we had previously made on aircraft that we assigned future payments due on these construction agreements to the purchaser. As we have the obligation and intent to lease the aircraft back from the purchaser expected within one year we recorded this current liability equal to the cash received and payments made by the purchaser. Also, includes capitalized interest. Total current liabilities Liabilities, Current Long-term debt, less current maturities Long-term Debt, Excluding Current Maturities Intercompany notes payable Due to Related Parties, Noncurrent Accrued pension liabilities Defined Benefit Pension Plan, Liabilities, Noncurrent Other liabilities and deferred credits Other Liabilities, Noncurrent Deferred taxes Deferred Tax Liabilities, Net, Noncurrent Temporary equity Temporary Equity, Carrying Amount, Attributable to Noncontrolling Interest Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury shares Treasury Stock, Value Stockholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders' investment Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders' investment Liabilities and Equity Commitments and Contingencies Disclosure [Abstract] Aircraft Purchase Contracts Table Aircraft Purchase Contracts [Table Text Block] Tabular representation of aircraft purchase contracts Rollforward schedule of aircraft purchase orders and options Schedule Of Aircraft Orders And Options [Table Text Block] Tabular representation of roll forward of aircraft purchase orders and options. Aircraft Lease Table Schedule Of Aircraft Leases [Table Text Block] Tabular representation of aircraft leases. Statement of Comprehensive Income [Abstract] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Other comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Currency translation adjustment attributable to noncontrolling interest Other Comprehensive (Income) Loss, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Total comprehensive (income) loss attributable to noncontrolling interests Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest Total comprehensive income attributable to Bristow Group Comprehensive Income (Loss), Net of Tax, Attributable to Parent Variable Interest Entities and Other Investments in Significant Affiliates [Abstract] -- None. No documentation exists for this element. -- Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Variable Interest Entities By Classification Of Entity [Axis] Variable Interest Entities [Axis] Classification Of Variable Interest Entity Domain Variable Interest Entity, Classification [Domain] Bristow Aviation Holdings Limited [Member] Bristow Aviation Holdings Limited [Member] -- None. No documentation exists for this element. -- Bristow Helicopters Nigeria Ltd [Member] Bristow Helicopters Nigeria Ltd [Member] -- None. No documentation exists for this element. -- Pan African Airlines Nigeria Ltd [Member] Pan African Airlines Nigeria Ltd [Member] -- None. No documentation exists for this element. -- Lider Taxi Aereo S.A. [Member] Lider Taxi Aereo S.A. [Member] Lider Taxi Aereo S.A. [Member] Variable Interest Entities And Other Investments [Line Items] Variable Interest Entity [Line Items] Number of variable interest entities Number of variable interest entities Number of variable interest entities of which we are the primary beneficiary. Ownership percentage in Variable Interest Entity Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Purchase of deferred stock shares Variable Interest Entity Deferred Stock Purchase Shares acquired of VIE entity. Business acquisition share price Business Acquisition, Share Price Total Amount Paid For Deferred Shares Total Amount Paid For Deferred Shares Total Amount Paid For Deferred Shares Principal amount of subordinated unsecured loan stock Unsecured Debt Interest rate on unsecured loan Subordinated Borrowing, Interest Rate Deferred interest cost Interest Expense, Debt Call option price held by noncontrolling interest Call option price held by noncontrolling interest Call option price held by noncontrolling interest. Call Option Rate Over LIBOR Call Option Rate Over LIBOR This is the call option rate over LIBOR for our noncontrolling shareholder. Call Option Guaranteed Rate This is the call option guaranteed rate for our noncontrolling shareholder. Put Option Guaranteed Rate Put Option Guaranteed Rate This is put option guaranteed rate for noncontrolling interest. Assets, Current Total assets Accounts Payable, Current Long-term Debt, Current Maturities Liabilities, Current Total long-term debt Liabilities Liabilities Revenues Operating Income (Loss) Operating Income (Loss) Equity Method Investment, Ownership Percentage Equity Method Investment, Ownership Percentage Document And Entity Information [Abstract] -- None. No documentation exists for this element. -- Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Debt Disclosure [Abstract] DEBT Debt Disclosure [Text Block] Primary beneficiary variable interest entity balance sheet Primary Beneficiary Variable Interest Balance Sheet [Table Text Block] Tabular disclosure of a primary beneficiary variable interest entity balance sheet. Primary beneficiary variable interest income statement items Primary Beneficiary Variable Interest Income Statement Items [Table Text Block] Tabular disclosure of income statement items of a primary beneficiary variable interest entity. Segments [Abstract] -- None. No documentation exists for this element. -- Schedule of revenue by segment Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Schedule of earnings from unconsolidated affiliates Schedule Of Earnings From Unconsolidated Affiliates [Table Text Block] Tabular disclosure of earnings from unconsolidated affiliates by reportable segments. Schedule of consolidated operating income loss Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Schedule of depreciation and amortization Schedule Of Depreciation And Amortization [Table Text Block] Tabular disclosure of all significant reconciling items in the reconciliation of total depreciation and amortization from reportable segments to the entity's consolidated depreciation and amortization. Schedule of identifiable assets Reconciliation of Assets from Segment to Consolidated [Table Text Block] Schedule of equity method investments Schedule Of Equity Method Investments [Table Text Block] Tabular disclosure of equity method investments by reportable segments. Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Senior Notes Due 2022 [Member] Senior Notes Due 2022 [Member] $450 million 6.25% Senior Notes due 2022 Term Loan [Member] Term Loan [Member] $250 million Term Loan due December 2016 Convertible Senior Notes [Member] Convertible Senior Notes [Member] -- None. No documentation exists for this element. -- Revolving Credit Facility [Member] Revolving Credit Facility [Member] Eastern Airways [Member] Eastern Airways International Limited [Member] Eastern Airways International Limited [Member] All Other Debt [Member] All Other Debt [Member] -- None. No documentation exists for this element. -- Cougar [Member] Cougar [Member] -- None. No documentation exists for this element. -- Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Aircraft [Member] Aircraft [Member] Aircraft [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Classification [Domain] Balance Sheet Location [Domain] Inventories [Member] Inventories [Member] Assets Held-for-sale [Member] Assets Held-for-sale [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value [Line Items] Fair Value [Line Items] -- None. No documentation exists for this element. -- Number of Impairment of Long-Lived Assets to be Disposed of Number of impairment of long lived assets to be disposed of The aggregate number of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Impairment of Long-Lived Assets to be Disposed of Impairment of Long-Lived Assets to be Disposed of Total Assets Non Recurring Assets, Fair Value Disclosure, Nonrecurring Rabbi Trust investments Other Investments Total Assets Recurring Assets, Fair Value Disclosure, Recurring Other accrued liabilities Other Liabilities, Current Total Liabilities Recurring Liabilities, Fair Value Disclosure, Recurring Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Contingent Consideration- beginning balance Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Change in fair value of contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease) Contingent Consideration- ending balance Fair Value Inputs, Discount Rate Fair Value Inputs, Discount Rate Carrying value of total debt Debt, Long-term and Short-term, Combined Amount Fair value of total debt Debt Instrument, Fair Value Disclosure Statement of Financial Position [Abstract] Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Treasury stock, shares acquired, par value method Treasury Stock, Shares Acquired, Par Value Method Treasury Stock, Shares, Acquired Par Value Method Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Convertible Senior Notes Due 2038 [Member] Convertible Senior Notes Due 2038 [Member] -- None. No documentation exists for this element. -- Other debt [Member] Other Debt [Member] Includes all other debt Amended and Restated Credit Facility [Axis] Amended and Restated Credit Facility [Axis] Amended and Restated Credit Facility [Axis] Amended and Restated Credit Facility [Domain] Amended and Restated Credit Facility [Domain] [Domain] for Amended and Restated Credit Facility [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Total debt Less short-term borrowings and current maturities of long-term debt Debt Instrument, Repurchase Amount Debt Instrument, Repurchase Amount Repurchase premium rate Redemption premium rate The redemption premium rate of the excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. Total consideration paid Total consideration paid Total amount of consideration paid including related expenses to repurchase debt. Repayment of debt Repayments of Debt Other income (expense) Other Nonoperating Income (Expense) Write-off of deferred debt financing fees Write off of Deferred Debt Issuance Cost Proceeds from borrowings Proceeds from Issuance of Debt Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Balances Of Debt And Equity Components [Abstract] Balances Of Debt And Equity Components [Abstract] -- None. No documentation exists for this element. -- Equity component- net carrying value Debt Instrument, Convertible, Carrying Amount of Equity Component Debt Instrument, Face Amount Debt Instrument, Face Amount Debt component- unamortized discount Debt Instrument, Unamortized Discount Long Term Convertible Debt Current And Noncurrent [Abstract] Convertible Debt [Abstract] Debt Instrument, Convertible, Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Contractual coupon interest Interest Expense, Debt, Excluding Amortization Amortization of debt discount Amortization of Debt Discount (Premium) Total interest expense Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] Schedule of components of net periodic pension cost Schedule of Net Benefit Costs [Table Text Block] Schedule of Black Scholes Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract] -- None. No documentation exists for this element. -- Revenue Recognition, Policy [Policy Text Block] Revenue Recognition, Policy [Policy Text Block] SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Accounts receivable from non-affiliates, net of allowance for doubtful accounts Accounts Receivable From Non Affiliates Net Of Allowance For Doubtful Accounts Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection less amounts due from affiliates. Accounts receivable from affiliates, net of allowance for doubtful accounts Due from Related Parties, Current Property and equipment - at cost: Property, Plant and Equipment, Gross [Abstract] Total property and equipment, net LIABILITIES AND STOCKHOLDERS' INVESTMENT Liabilities and Equity [Abstract] Accrued wages, benefits and related taxes Employee-related Liabilities, Current Income taxes payable Accrued Income Taxes, Current Other accrued taxes Accrual for Taxes Other than Income Taxes, Current Deferred revenue Deferred Revenue, Current Accrued maintenance and repairs Accrued Maintenance And Repairs Carrying value as of the balance sheet date of obligations incurred and payable for maintenance and repairs, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued interest Interest Payable, Current Commitments and Contingencies Commitments and Contingencies Stockholders' investment: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Accumulated other comprehensive loss Stockholders' equity Total stockholders' investment Condensed Financial Statements, Captions [Line Items] Other comprehensive income Total comprehensive (income) loss attributable to noncontrolling interests Total comprehensive income attributable to Bristow Group Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Statement, Geographical [Axis] Geographical [Axis] Segment Geographical Domain Geographical [Domain] Europe [Member] Europe [Member] West Africa [Member] West Africa [Member] -- None. No documentation exists for this element. -- North America [Member] North America [Member] Australia [Member] AUSTRALIA Other International [Member] Other International [Member] -- None. No documentation exists for this element. -- Statement, Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Corporate And Other [Member] Corporate and Other [Member] Intersegment Elimination [Member] Intersegment Eliminations [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] External Customer [Member] External Customer [Member] External type (non-intercompany) customer. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total segment gross revenue Total consolidated gross revenue Total earnings from unconsolidated affiliates, net of losses - equity method investments Income (Loss) from Equity Method Investments Total business unit operating income Operating Income Loss Including Income Loss From Equity Method Investments Excluding Gain Loss From Sale Of Property Plant And Equipment The net result for the period of deducting operating expense from operating revenue and then adding (deducting) earnings (losses) from unconsolidated affiliates. This operating income for the business units do not include gain (loss) on disposal of assets. Gain (loss) on disposal of assets Gain (Loss) on Disposition of Property Plant Equipment Total consolidated operating income Operating Income Loss Including Income Loss From Unconsolidated Affiliates And Gain Loss From Sale Of Property Plant And Equipment The net result for the period of deducting operating expense from operating revenue and then adding (deducting) gain (loss) on disposal of assets and earnings (losses) from unconsolidated affiliates. Total depreciation and amortization Depreciation, Depletion and Amortization Total identifiable assets Total investments in unconsolidated affiliates - equity method Equity Method Investments Construction in progress within property and equipment Construction in Progress, Gross Schedule of Net Periodic Pension Cost [Table] Schedule of Defined Benefit Plans Disclosures [Table] Net Periodic Pension Cost [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] UK staff pension plan [Member] UK staff pension plan [Member] UK staff pension plan Norway pension plan [Member] Norway pension plan [Member] Norway pension plan UK Pension Plans [Member] UK Pension Plans [Member] All of UK Pension plans Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast [Member] Scenario, Forecast [Member] Pension Plan [Line Items] Defined Benefit Plan Disclosure [Line Items] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of unrecognized losses Defined Benefit Plan, Amortization of Gains (Losses) Net periodic pension cost Defined Benefit Plan, Net Periodic Benefit Cost Cash Contributions Defined Benefit Plan, Contributions by Employer Estimated cash contributions Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year Schedule of Assumptions for Stock Options [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Incentive Compensation Plan [Axis] Plan Name [Axis] Description of Plan [Domain] Plan Name [Domain] Plan 2007 [Member] Plan 2007 [Member] -- None. No documentation exists for this element. -- Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Chief Executive Officer [Member] Chief Executive Officer [Member] Incentive Compensation [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Common Stock Shares reserved Common Stock, Capital Shares Reserved for Future Issuance Shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Stock based compensation expense Share-based Compensation Stock option grants- shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Restricted stock grants- shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted stock grants- fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Risk free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected life (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Weighted average exercise price of options granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average grant-date fair value of options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Performance cash compensation liability Performance cash compensation liability The liability recorded for the performance cash awards based on the fair value. Performance cash compensation expense Performance Cash Compensation Expense The compensation expense related to performance cash awards. Lump Sum Cash Payment Lump Sum Cash Payment Amount of lump sum cash payment that would be payable as severance under the employment agreement that was in effect prior to the execution of the retirement and consulting agreement. Compensation Compensation FAIR VALUE DISCLOSURES Fair Value Disclosures [Text Block] Intercompany Customer [Member] Intercompany Customer [Member] Intercompany Customer [Member] Direct cost and reimbursable expense Direct Cost And Reimbursable Expense Line item represents the aggregate direct operating costs and reimbursable expenses incurred during the reporting period. Intercompany expenses Intercompany expenses Line item represents intercompany expenses that eliminates in consolidation. Depreciation and amortization General and administrative Selling, General and Administrative Expense Operating expense Operating Expenses Earnings from unconsolidated affiliates, net of losses Earnings From Unconsolidated Affiliates Includes earnings accounted for under the equity method and dividends accounted for under the cost method from unconsolidated affiliates. Operating income Interest expense, net Interest Income (Expense), Net Other income (expense), net Other Nonoperating Income Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income attributable to noncontrolling interests Net income attributable to Bristow Group Net Income (Loss) Attributable to Parent EMPLOYEE BENEFIT PLANS Compensation and Employee Benefit Plans [Text Block] BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] Income Tax Disclosure [Abstract] Income Tax Examination [Table] Income Tax Examination [Table] Entity by Location [Axis] Entity by Location [Axis] Location [Domain] Location [Domain] Income Tax Examination [Line Items] Income Tax Examination [Line Items] Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Unrecognized Tax Benefits Unrecognized Tax Benefits Tax indemnity asset Tax indemnity asset Tax indemnity asset established corresponding to the uncertain tax benefits related to pre-acquisition tax matters subject of an indemnity. Schedule of foreign exchange rates Schedule of Foreign Exchange Rate [Table Text Block] Tabular disclosure of multiple exchange rates. Schedule of foreign exchange impact Schedule of Foreign Exchange Impact [Table Text Block] Tabular disclosure of the estimated impact of multiple exchange rate fluctuations on the financial condition and results of operations. Schedule of capital expenditures Capital expenditures [Table Text Block] A table of capital expenditures, shown as a text block. Schedule of aircraft sales and impairments Aircraft Sales And Impairments [Table Text Block] Schedule of Aircraft Sales And Impairments COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] DIVIDENDS, SHARE REPURCHASES AND EARNINGS PER SHARE Dividends, Share Repurchases And Earnings Per Share [Text Block] This element may be used to capture the complete disclosure pertaining to an entity's earnings per share and comprehensive income. Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Dividend Declared [Member] Dividend Declared [Member] Stock Repurchased [Member] Stock Repurchased [Member] Stock Repurchased Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Name Domain Antidilutive Securities, Name [Domain] Stock Options [Member] Employee Stock Option [Member] Restricted Stock Awards [Member] Restricted Stock Awards [Member] Incremental common shares attributable to unvested restricted stock awards that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented. Restricted stock are shares of stock for which sale is contractually or governmentally restricted for a given period of time. Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Accumulated Translation Adjustment [Member] Accumulated Translation Adjustment [Member] Accumulated Defined Benefit Plans Adjustment [Member] Accumulated Defined Benefit Plans Adjustment [Member] Dividends, Share Repurchases and Earnings Per Share [Line Items] Dividends, Share Repurchases and Earnings Per Share [Line Items] -- None. No documentation exists for this element. -- Cash dividends declared per common share Common Stock, Dividends, Per Share, Declared Payments for repurchase of common stock Payments for Repurchase of Common Stock Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Earnings Per Share Reconciliation [Abstract] Outstanding Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average exercise price Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price Income available to common stockholders - basic Net Income (Loss) Available to Common Stockholders, Basic Interest expense on assumed conversion of 3% Convertible Notes, net of tax Interest on Convertible Debt, Net of Tax Income available to common stockholders - diluted Net Income (Loss) Available to Common Stockholders, Diluted Weighted average number of common shares outstanding - basic Weighted Average Number of Shares Outstanding, Basic Assumed conversion of 3% Convertible Senior Noted outstanding during the period Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Net effect of dilutive stock options, restricted stock units and restricted stock awards based on the treasury stock method Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average number of common shares outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted Basic earnings per share Earnings Per Share, Basic Diluted earnings per share Earnings Per Share, Diluted Debt Instrument Convertible Terms Of Conversion Feature Debt Instrument, Convertible, Terms of Conversion Feature Debt Instrument, Convertible, Conversion Price Debt Instrument, Convertible, Conversion Price Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss) - Beginning Balance Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Accumulated Other Comprehensive Income (Loss) - Ending Balance VARIABLE INTEREST ENTITIES Schedule of Variable Interest Entities [Table Text Block] Schedule of debt Schedule of Debt [Table Text Block] Schedule of convertible debt Schedule Of Convertible Debt [Table Text Block] Tabular disclosure of the liability and equity components of convertible debt. Schedule of convertible debt interest expense Schedule Of Convertible Debt Interest Expense [Table Text Block] Tabular disclosure of interest expense related to convertibe debt. Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Capital expenditures Payments to Acquire Productive Assets Proceeds from asset dispositions Proceeds from Sale of Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Debt issuance costs Payments of Debt Issuance Costs Repayment of debt Repayments of Long-term Debt Dividends paid Payments of Dividends Increases (decreases) in cash related to intercompany advances and debt Increases (decreases) in cash related to intercompany advances and debt Increases (decreases) in cash related to intercompany advances and debt. Partial prepayment of put/call obligation Partial Prepayment Of Put Call Obligation The net cash outflow for early payment of guaranteed return element of noncontrolling interests put/call agreement. Acquisition of noncontrolling interest Payments to Noncontrolling Interests Proceeds from assignment of aircraft purchase agreements Proceeds from Assignment of Aircraft Purchase Agreements Amount received for progress payments we had previously made on aircraft that we assigned future payments due on these construction agreements to the purchaser. Repurchase of Common Stock Issuance of Common Stock Proceeds from Issuance of Common Stock Tax benefit related to stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental Condensed Consolidating Financial Information [Abstract] -- None. No documentation exists for this element. -- Additional Financial Information Disclosure [Text Block] Additional Financial Information Disclosure [Text Block] Schedule Of Aircraft Purchase Contracts [Table] Schedule Of Aircraft Purchase Contracts [Table] Schedule of Aircraft Purchases Commitments Aircraft Operating Lease Terms [Axis] Aircraft Operating Lease Terms [Axis] -- None. No documentation exists for this element. -- Aircraft Operating Lease [Domain] Aircraft Operating Lease [Domain] -- None. No documentation exists for this element. -- Remainder of FY2015 to FY2016 [Member] Fiscal Year One And Two [Member] Occuring in first and second fiscal years following current fiscal year. FY2017 to FY2019 [Member] Fiscal Years Three To Five [Member] Occuring in third through fifth fiscal years following current fiscal year. FY2020 to FY2024 [Member] Fiscal Year Six And Thereafter [Member] Occuring in sixth and thereafter years following current fiscal year. Aircraft Purchase Contracts By Fiscal Year [Axis] Aircraft Purchase Contracts By Fiscal Year [Axis] -- None. No documentation exists for this element. -- Fiscal Years [Domain] Fiscal Years [Domain] -- None. No documentation exists for this element. -- Remainder of Year 2015 [Member] Remainder Of Current Year [Member] Due in the remainder of fiscal year. Year 2016 [Member] Year One [Member] Due in one year following current fiscal year. Year 2017 [Member] Year Two [Member] Due in two years following current fiscal year. Year 2018 [Member] Year Three [Member] Due in three years following current fiscal year. Year 2019 and Thereafter [Member] Year Four and Thereafter [Member] Due in four years and thereafter following current fiscal year. Aircraft Purchase Contracts Type [Axis] Aircraft Purchase Contracts Type [Axis] -- None. No documentation exists for this element. -- Contracts [Domain] Contracts [Domain] -- None. No documentation exists for this element. -- Commitments [Member] Commitments [Member] Options [Member] Options [Member] -- None. No documentation exists for this element. -- Other Commitments [Member] Other Commitments [Member] All other purchase obligation commitments Aircraft Location [Axis] Aircraft Location [Axis] -- None. No documentation exists for this element. -- Aircraft Location [Domain] Aircraft Location [Domain] -- None. No documentation exists for this element. -- Aircraft Type [Axis] Aircraft Type [Axis] Aircraft Type [Domain] Aircraft [Domain] Medium Aircraft [Member] Medium Aircraft [Member] Medium size aircraft Large Aircraft [Member] Large Aircraft [Member] Large size helicopters Medium and Large [Member] Medium And Large [Member] Medium And Large [Member] SAR Configured [Member] Other Aircraft Type [Member] Other aircraft type Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Unionized Employees Concentration Risk [Member] Unionized Employees Concentration Risk [Member] Geographical [Domain] Alaska [Member] ALASKA Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Number of aircraft purchase commitments Number Of Aircraft Purchase Commitments Number of aircraft committed to purchase. Purchase Commitments - Total Unrecorded Unconditional Purchase Obligation Number of aircraft purchase options Number Of Aircraft Options Number of aircraft with the option to purchase. Aircraft Purchase Options - Total Unrecorded Purchase Options Balance Sheet Amount The amount of the fixed and determinable portion of an unrecorded purchase options as of the balance sheet date. Number of signed client contracts Number Of Signed Client Contracts Total number of aircraft with signed client contracts in place. Number of contingent aircraft orders Number Of Contingent Aircraft Number of aircraft subject to the successful development and certification of the aircraft. Analysis Of Aircraft Orders And Options [Line Items] AnalysisOfAircraftOrdersAndOptions [Roll Forward] Analysis Of Aircraft Orders And Options [Abstract] Beginning of quarter Number Of Aircraft Balance Number of aircraft balance. Aircraft Delivered Number Of Aircraft Delivered Number of aircraft delivered during the period. Exercised options Exercised options Number of exercised options for aircraft during the period. Expired Options Expired Options Number of expired options for aircraft during the period. End of quarter Operating leases rental expense Operating Leases, Rent Expense, Net Lease term of the aircraft Sale Leaseback Transaction, Lease Terms Monthly Rent payment Sale Leaseback Transaction, Monthly Rental Payments Number of leased aircraft Number Of Leased Aircraft Total number of training aircraft delivered. Collective Bargaining Agreements and/or Unions Concentration Risk, Percentage Employee Agreement Escalation Rate Collaborative Arrangement, Rights and Obligations Work force reductions costs Severance Costs Number of aircraft suspend operations Number of aircraft suspend operations The number of affected aircraft that suspended operations as a result of the Civil Aviation Authority's safety directive issued on October 25, 2012. Income Statement [Abstract] Gross revenue: Revenues [Abstract] Operating revenue from non-affiliates Sales Revenue Net Excluding Operating Revenue From Affiliates Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by operating revenue from affiliates, sales returns and allowances, and sales discounts. Operating revenue from affiliates Revenue from Related Parties Reimbursable revenue from non-affiliates Reimbursable revenue from non-affiliates Repayment received for expenses incurred on behalf of the client or customer, other than those reimbursements received by landlords from tenants reduced by reimbursable revenue from affiliates. Reimbursable revenue from affiliates Reimbursable revenue from affiliates Repayment received for expenses incurred between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's' management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) a parent and its minority interests. Total consolidated gross revenue Operating expense: Costs and Expenses [Abstract] Direct cost Direct Operating Costs Reimbursable expense Cost of Reimbursable Expense Operating income Income before provision for income taxes Net income Net income attributable to Bristow Group Earnings per common share: Earnings Per Share [Abstract] TAXES Income Tax Disclosure [Text Block] Schedule of Foreign Currency [Table] Tables disclosing significant foreign currencies that impact operations. Foreign Currency Exchange Rates [Axis] Foreign Currency Exchange Rates [Axis] -- None. No documentation exists for this element. -- Exhange Rates [Domain] Exhange Rates [Domain] -- None. No documentation exists for this element. -- One British Pound Sterling Into Us Dollars [Member] One British Pound Sterling Into Us Dollars [Member] -- None. No documentation exists for this element. -- One Euro Into Us Dollars [Member] One Euro Into Us Dollars [Member] -- None. No documentation exists for this element. -- One Australian Dollar Into Us Dollars [Member] One Australian Dollar Into Us Dollars [Member] -- None. No documentation exists for this element. -- One Nigerian Naira Into Us Dollars [Member] One Nigerian Naira Into Us Dollars [Member] -- None. No documentation exists for this element. -- One Brazilian Real Into Us Dollars [Member] One Brazilian Real Into Us Dollars [Member] -- None. No documentation exists for this element. -- Impact of Changes in Foreign Currency Exchange Rates [Member] Impact of Changes in Foreign Currency Exchange Rates [Member] -- None. No documentation exists for this element. -- Major Property Class [Axis] Major Property Class [Axis] Major Property Class [Domain] Major Property Class [Domain] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Air Transportation Equipment [Member] Air Transportation Equipment [Member] Other Capitalized Property Other Capitalized Property Plant and Equipment [Member] U.K. SAR [Member] U.K. SAR [Member] U.K. SAR contract U.K. SAR and Norway Client [Member] U.K. SAR and Norway Client [Member] U.K. SAR and Norway Client [Member] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] Service Life [Member] Service Life [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Weighted Average [Member] Weighted Average [Member] Basis of Presentation, Consolidation and Summary of Significan Accounting Policies [Line Items] Basis of Presentation, Consolidation and Summary of Significan Accounting Policies [Line Items] -- None. No documentation exists for this element. -- Foreign Currency [Line Items] Foreign Currency [Abstract] Foreign currency exchange rates Foreign currency exchange rates Foreign currency exchange rates during the period. Foreign currency period end exchange rates Foreign Currency Exchange Rate, Translation Foreign Currency Transaction Gain (Loss), before Tax Foreign Currency Transaction Gain (Loss), before Tax Operating expense Non-operating expense Nonoperating Income (Expense) Cumulative translation adjustment Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease) Total stockholders' investment Impact of Foreign Exchange Rates on Unconsolidated affiliates Impact of Foreign Exchange Rates on Unconsolidated affiliates Aggregate impact of foreign currency transaction on unconsolidate affiliates earnings for the period. Interest income Investment Income, Interest Interest and Debt Expense Interest and Debt Expense Accounts Receivable [Line Items] Receivables [Abstract] Allowance for doubtful accounts, affiliates Allowance for doubtful accounts, affiliates A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible from affiliates. Allowance For Doubtful Accounts Non-Affiliates Allowance For Doubtful Accounts Non-Affiliates A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible less the allowance for doubtful accounts for affiliates. Allowance for Doubtful Accounts Receivable, Recoveries Allowance for Doubtful Accounts Receivable, Recoveries Allowance for Doubtful Accounts Receivable, Write-offs Allowance for Doubtful Accounts Receivable, Write-offs Inventories [Line Items] Inventory Disclosure [Abstract] Inventory allowance Inventory Valuation Reserves Additional allowances Valuation Allowances and Reserves, Charged to Cost and Expense Deferred Contract Acquisition Cost, Non Current Deferred Contract Acquisition Cost, Non Current Net costs incurred and were directly related to generating contract revenues as of balance sheet date. Property And Equipment [Line Items] Property, Plant and Equipment [Abstract] Number of aircraft delivered Capital expenditures Payments for PP&E Payments for Flight Equipment Property, Plant and Equipment, Number of Aircraft Sold Property, Plant and Equipment, Number of Aircraft Sold Net gain/loss from aircraft and other equipment sold Gain Loss From Sale Of Flight Equipment Net gain/loss from sales of long-lived depreciable flight assets, including owned aircraft or capital improvements. Change in Accounting Estimate, Financial Effect Change in Accounting Estimate, Financial Effect Deferred sale leaseback advance total Deferred Sale Leaseback Advance Total Amount received for progress payments we had previously made on aircraft that we assigned future payments due on these construction agreements to the purchaser. As we have the obligation and intent to lease the aircraft back from the purchaser we recorded this current liability equal to the cash received and payments made by the purchaser. Also, includes capitalized interest. Includes both current and non-current portion of liability. Deferred sale leaseback advance - current Deferred sale leaseback advance - long-term Deferred Sale Leaseback Advance - Long-term Amount received for progress payments we had previously made on aircraft that we assigned future payments due on these construction agreements to the purchaser. As we have the obligation and intent to lease the aircraft back from the purchaser expected after one year we recorded this non-current liability equal to the cash received and payments made by the purchaser. Also, includes capitalized interest. Proceeds from Assignment of Aircraft Purchase Agreement Proceeds from Assignment of Aircraft Purchase Agreement Amount received for progress payments we had previously made on aircraft that we assigned future payments due on these construction agreements to the purchaser. Number of aircraft assigned future payments Number Of Aircraft Assigned Future Payments Number of aircraft for which we received progress payments we had previously made on aircraft that we assigned future payments due on these construction agreements to the purchaser. Deferred sale leaseback progress payments Deferred Sale Leaseback Cumulative Progress Payments Amount of payments made by the purchaser resulting in a corresponding increase to deferred sale leaseback advance and construction in progress. Schedule of fair value assets measured on non-recurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of fair value assets measured on recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of contingent consideration Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block] Schedule of information required and determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of liabilities using significant unobservable inputs (level 3). Separately presenting changes during the period, attributable to: (1) total gains or losses for the period (realized and unrealized) and location reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); (3) transfers in and/or out of Level 3. Schedule of fair value of debt Schedule Of Fair Value Of Debt [Table Text Block] Tabular disclosure of the carrying value and fair value of debt. Statement of Cash Flows [Abstract] Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Deferred income taxes Non Cash Income Tax Expense The non cash portion of deferred income tax expense (benefit). Discount amortization on long-term debt (Gain) loss on disposal of assets Stock-based compensation Equity in earnings from unconsolidated affiliates (in excess of) less than dividends received Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Tax benefit related to stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Increase (decrease) in cash resulting from changes in: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable, Trade Accrued liabilities Increase (Decrease) in Accrued Liabilities Other liabilities and deferred credits Increase (Decrease) in Other Accrued Liabilities Net cash provided by operating activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net cash used in investing activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Repurchase of common stock Common stock dividends paid Payments of Ordinary Dividends, Common Stock Issuance of common stock Net increase (decrease) in cash and cash equivalents Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Interest Interest Paid Income taxes Income Taxes Paid