0000001 - Document - Cover Page
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9952151 - Statement - Condensed Consolidated Statements of Income (Unaudited) - Southern
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9952152 - Statement - Condensed Consolidated Statements of Income (Unaudited) - Southern (Parenthetical)
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9952153 - Statement - Condensed Consolidated Statements of Income (Unaudited) - Southern (Calculation)
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9952154 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - Southern
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9952155 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - Southern (Parenthetical)
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9952156 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - Southern
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9952157 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - Southern (Parenthetical)
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9952158 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - Southern
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9952159 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - Southern (Parenthetical)
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9952160 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - Southern
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9952161 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - Southern (Parenthetical)
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9952162 - Statement - Condensed Statements of Income (Unaudited) - APC
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9952163 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - APC
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9952164 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - APC (Parenthetical)
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9952165 - Statement - Condensed Statements of Cash Flows (Unaudited) - APC
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9952166 - Statement - Condensed Statements of Cash Flows (Unaudited) - APC (Parenthetical)
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9952167 - Statement - Condensed Balance Sheets (Unaudited) - APC
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9952168 - Statement - Condensed Statements of Common Stockholders' Equity (Unaudited) - APC
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9952169 - Statement - Condensed Statements of Income (Unaudited) - GPC
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9952170 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - GPC
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9952171 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - GPC (Parenthetical)
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9952172 - Statement - Condensed Statements of Cash Flows (Unaudited) - GPC
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9952173 - Statement - Condensed Statements of Cash Flows (Unaudited) - GPC (Parenthetical)
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9952174 - Statement - Condensed Balance Sheets (Unaudited) - GPC
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9952175 - Statement - Condensed Statements of Common Stockholders' Equity (Unaudited) - GPC
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9952176 - Statement - Condensed Statements of Income and Comprehensive Income (Unaudited) - MPC
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9952177 - Statement - Condensed Statements of Cash Flows (Unaudited) - MPC
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9952178 - Statement - Condensed Balance Sheets (Unaudited) - MPC
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9952179 - Statement - Condensed Statements of Common Stockholders' Equity (Unaudited) - MPC
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9952180 - Statement - Condensed Consolidated Statements of Income (Loss) (Unaudited) - SPC
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9952181 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC
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9952182 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC (Parenthetical)
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9952183 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC
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9952184 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC (Parenthetical)
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9952185 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - SPC
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9952186 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - SPC (Parenthetical)
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9952187 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - SPC
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9952188 - Statement - Condensed Consolidated Statements of Income (Unaudited) - GAS
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9952189 - Statement - Condensed Consolidated Statements of Income (Unaudited) - GAS (Parenthetical)
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9952190 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - GAS
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9952191 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - GAS (Parenthetical)
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9952192 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - GAS
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9952193 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - GAS (Parenthetical)
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9952194 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - GAS
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9952195 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - GAS (Parenthetical)
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9952196 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - GAS
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9952197 - Disclosure - Introduction
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9952198 - Disclosure - Regulatory Matters
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9952199 - Disclosure - Contingencies
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9952200 - Disclosure - Revenue from Contracts with Customers and Lease Income
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9952201 - Disclosure - Consolidated Entities and Equity Method Investments
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9952202 - Disclosure - Financing and Leases
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9952203 - Disclosure - Income Taxes
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9952204 - Disclosure - Retirement Benefits
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9952205 - Disclosure - Fair Value Measurements
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9952206 - Disclosure - Derivatives
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9952207 - Disclosure - Acquisitions and Dispositions
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9952208 - Disclosure - Segment and Related Information
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9955511 - Disclosure - Introduction (Policies)
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9955512 - Disclosure - Introduction (Tables)
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9955513 - Disclosure - Regulatory Matters (Tables)
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9955514 - Disclosure - Revenue from Contracts with Customers and Lease Income (Tables)
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9955515 - Disclosure - Consolidated Entities and Equity Method Investments (Tables)
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9955516 - Disclosure - Financing and Leases (Tables)
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9955517 - Disclosure - Retirement Benefits (Tables)
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9955518 - Disclosure - Fair Value Measurements (Tables)
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9955519 - Disclosure - Derivatives (Tables)
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9955520 - Disclosure - Acquisitions and Dispositions (Tables)
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9955521 - Disclosure - Segment and Related Information (Tables)
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9955522 - Disclosure - Introduction - Schedule of Goodwill (Details)
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9955523 - Disclosure - Introduction - Schedule of Other Intangible Assets (Details)
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9955523 - Disclosure - Introduction - Schedule of Other Intangible Assets (Details)
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9955524 - Disclosure - Introduction - Schedule of Amortization of Other Intangible Assets (Details)
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9955525 - Disclosure - Introduction - Schedule of Cash, Cash Equivalents, and Restricted Cash (Details)
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9955526 - Disclosure - Introduction - Asset Retirement Obligations (Details)
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9955528 - Disclosure - Regulatory Matters - Alabama Power (Details)
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9955529 - Disclosure - Regulatory Matters - Georgia Power (Details)
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9955530 - Disclosure - Regulatory Matters - Georgia Power, Projects Under Construction (Details)
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9955531 - Disclosure - Regulatory Matters - Mississippi Power (Details)
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9955533 - Disclosure - Contingencies - Environmental Remediation (Details)
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9955534 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Disaggregation of Revenue (Details)
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9955535 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Contract Balances (Details)
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9955536 - Disclosure - Revenue from Contracts with Customers and Lease Income - Narrative (Details)
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9955537 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Remaining Performance Obligations (Details)
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9955537 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Remaining Performance Obligations (Details)
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9955538 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Lease Income (Details)
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9955539 - Disclosure - Consolidated Entities and Equity Method Investments - Narrative (Details)
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9955540 - Disclosure - Consolidated Entities and Equity Method Investments - Schedule of Equity Method Investments (Details)
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9955541 - Disclosure - Consolidated Entities and Equity Method Investments - Schedule of Earnings (Loss) from Equity Method Investments (Details)
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9955542 - Disclosure - Financing and Leases - Schedule of Credit Arrangements (Details)
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9955543 - Disclosure - Financing and Leases - Bank Credit Agreements Narrative (Details)
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9955544 - Disclosure - Financing and Leases - DOE Loan Guarantee Borrowings (Details)
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9955545 - Disclosure - Financing and Leases - Equity Distribution Agreement (Details)
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9955546 - Disclosure - Financing and Leases - Earnings Per Share (Details)
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9955547 - Disclosure - Financing and Leases - Georgia Power Lease Modifications (Details)
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9955548 - Disclosure - Income Taxes (Details)
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9955549 - Disclosure - Retirement Benefits (Details)
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9955550 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details)
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9955551 - Disclosure - Fair Value Measurements - Schedule of Increase (Decrease) In Fair Value Of Funds (Details)
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9955552 - Disclosure - Fair Value Measurements - Narrative (Details)
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9955553 - Disclosure - Fair Value Measurements - Schedule of Financial Instruments for which Carrying Amount did not Equal Fair Value (Details)
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9955554 - Disclosure - Derivatives - Schedule of Energy-Related Derivatives (Details)
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9955555 - Disclosure - Derivatives - Narrative (Details)
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9955555 - Disclosure - Derivatives - Narrative (Details)
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9955556 - Disclosure - Derivatives - Schedule of Interest Rate Derivatives (Details)
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9955557 - Disclosure - Derivatives - Schedule of Foreign Currency Derivatives (Details)
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9955558 - Disclosure - Derivatives - Schedule of Derivative Category and Balance Sheet Location (Details)
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9955558 - Disclosure - Derivatives - Schedule of Derivative Category and Balance Sheet Location (Details)
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9955559 - Disclosure - Derivatives - Schedule of Pre-tax Effects of Unrealized Derivative Gains (Losses) (Details)
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9955559 - Disclosure - Derivatives - Schedule of Pre-tax Effects of Unrealized Derivative Gains (Losses) (Details)
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9955560 - Disclosure - Derivatives - Schedule of Pre-Tax Effects of Hedging on AOCI (Details)
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9955561 - Disclosure - Derivatives - Schedule of Pre-Tax Effects of Cash Flow and Fair Value Hedging on Income (Details)
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9955561 - Disclosure - Derivatives - Schedule of Pre-Tax Effects of Cash Flow and Fair Value Hedging on Income (Details)
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9955562 - Disclosure - Derivatives - Schedule of Cumulative Basis Adjustments for Fair Value Hedges (Details)
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9955562 - Disclosure - Derivatives - Schedule of Cumulative Basis Adjustments for Fair Value Hedges (Details)
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9955563 - Disclosure - Acquisitions and Dispositions - Narrative (Details)
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9955564 - Disclosure - Acquisitions and Dispositions - Schedule of Construction Projects (Details)
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9955565 - Disclosure - Acquisitions and Dispositions - Schedule of Wind Repowering Projects (Details)
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9955566 - Disclosure - Segment and Related Information - Narrative (Details)
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9955567 - Disclosure - Segment and Related Information - Schedule of Financial Data for Business Segments (Details)
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9955568 - Disclosure - Segment and Related Information - Schedule of Traditional Electric Companies (Details)
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9955569 - Disclosure - Segment and Related Information - Schedule of Southern Power (Details)
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9955570 - Disclosure - Segment and Related Information - Schedule of Gas Revenues (Details)
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