SOUTHERN CO

0000001 - Document - Cover Page

0000002 - Statement - Condensed Consolidated Statements of Income (Unaudited) - Southern

0000003 - Statement - Condensed Consolidated Statements of Income (Unaudited) - Southern (Parenthetical)

0000004 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - Southern

0000005 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - Southern (Parenthetical)

0000006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - Southern

0000007 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - Southern (Parenthetical)

0000008 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - Southern

0000009 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - Southern (Parenthetical)

0000010 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - Southern

0000011 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - Southern (Parenthetical)

0000012 - Statement - Condensed Statements of Income (Unaudited) - APC

0000013 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - APC

0000014 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - APC (Parenthetical)

0000015 - Statement - Condensed Statements of Cash Flows (Unaudited) - APC

0000016 - Statement - Condensed Statements of Cash Flows (Unaudited) - APC (Parenthetical)

0000017 - Statement - Condensed Balance Sheets (Unaudited) - APC

0000018 - Statement - Condensed Statements of Common Stockholders' Equity (Unaudited) - APC

0000019 - Statement - Condensed Statements of Income (Unaudited) - GPC

0000020 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - GPC

0000021 - Statement - Condensed Statements of Comprehensive Income (Unaudited) - GPC (Parenthetical)

0000022 - Statement - Condensed Statements of Cash Flows (Unaudited) - GPC

0000023 - Statement - Condensed Statements of Cash Flows (Unaudited) - GPC (Parenthetical)

0000024 - Statement - Condensed Balance Sheets (Unaudited) - GPC

0000025 - Statement - Condensed Statements of Common Stockholders' Equity (Unaudited) - GPC

0000026 - Statement - Condensed Statements of Income (Unaudited) - MPC

0000027 - Statement - Condensed Statements of Cash Flows (Unaudited) - MPC

0000028 - Statement - Condensed Balance Sheets (Unaudited) - MPC

0000029 - Statement - Condensed Statements of Common Stockholders' Equity (Unaudited) - MPC

0000030 - Statement - Condensed Consolidated Statements of Income (Unaudited) - SPC

0000031 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC

0000032 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC (Parenthetical)

0000033 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC

0000034 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC (Parenthetical)

0000035 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - SPC

0000036 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - SPC (Parenthetical)

0000037 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - SPC

0000038 - Statement - Condensed Consolidated Statements of Income (Unaudited) - GAS

0000039 - Statement - Condensed Consolidated Statements of Income (Unaudited) - GAS (Parenthetical)

0000040 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - GAS

0000041 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) - GAS (Parenthetical)

0000042 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - GAS

0000043 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) - GAS (Parenthetical)

0000044 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - GAS

0000045 - Statement - Condensed Consolidated Balance Sheets (Unaudited) - GAS (Parenthetical)

0000046 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - GAS

0000047 - Disclosure - Introduction

0000048 - Disclosure - Regulatory Matters

0000049 - Disclosure - Contingencies

0000050 - Disclosure - Revenue from Contracts with Customers and Lease Income

0000051 - Disclosure - Consolidated Entities and Equity Method Investments

0000052 - Disclosure - Financing and Leases

0000053 - Disclosure - Income Taxes

0000054 - Disclosure - Retirement Benefits

0000055 - Disclosure - Fair Value Measurements

0000056 - Disclosure - Derivatives

0000057 - Disclosure - Acquisitions and Dispositions

0000058 - Disclosure - Segment and Related Information

995445 - Disclosure - Insider Trading Arrangements

9954471 - Disclosure - Introduction (Policies)

9954472 - Disclosure - Introduction (Tables)

9954473 - Disclosure - Regulatory Matters (Tables)

9954474 - Disclosure - Revenue from Contracts with Customers and Lease Income (Tables)

9954475 - Disclosure - Consolidated Entities and Equity Method Investments (Tables)

9954476 - Disclosure - Financing and Leases (Tables)

9954477 - Disclosure - Retirement Benefits (Tables)

9954478 - Disclosure - Fair Value Measurements (Tables)

9954479 - Disclosure - Derivatives (Tables)

9954480 - Disclosure - Acquisitions and Dispositions (Tables)

9954481 - Disclosure - Segment and Related Information (Tables)

9954482 - Disclosure - Introduction - Schedule of Goodwill (Details)

9954483 - Disclosure - Introduction - Schedule of Other Intangible Assets (Details)

9954484 - Disclosure - Introduction - Schedule of Amortization of Other Intangible Assets (Details)

9954485 - Disclosure - Introduction - Schedule of Cash, Cash Equivalents, and Restricted Cash (Details)

9954486 - Disclosure - Introduction - Storm Damage Reserves (Details)

9954487 - Disclosure - Introduction - Asset Retirement Obligations (Details)

9954488 - Disclosure - Introduction - Decommissioning Expenses (Details)

9954489 - Disclosure - Regulatory Matters - Schedule of Cost Recovery Clauses (Details)

9954490 - Disclosure - Regulatory Matters - APC Certificate of Convenience and Necessity (Details)

9954491 - Disclosure - Regulatory Matters - APC Excess Accumulated Deferred Income Tax Accounting Order (Details)

9954492 - Disclosure - Regulatory Matters - APC Rate CNP New Plant (Details)

9954493 - Disclosure - Regulatory Matters - APC Renewable Generation Certificate (Details)

9954494 - Disclosure - Regulatory Matters - APC Reliability Reserve Accounting Matter (Details)

9954495 - Disclosure - Regulatory Matters - GPC Rate Matters (Details)

9954496 - Disclosure - Regulatory Matters - GPC Plant Vogtle Unit 3 and Common Facilities Rate Proceeding (Details)

9954497 - Disclosure - Regulatory Matters - GPC Fuel Cost Recovery (Details)

9954498 - Disclosure - Regulatory Matters - GPC Integrated Resource Plan (Details)

9954499 - Disclosure - Regulatory Matters - GPC Storm Damage Recovery (Details)

9954500 - Disclosure - Regulatory Matters - GPC Nuclear Construction (Details)

9954501 - Disclosure - Regulatory Matters - GPC Nuclear Construction Cost and Schedule (Details)

9954502 - Disclosure - Regulatory Matters - GPC Amendments to the Vogtle Joint Ownership Agreements (Details)

9954503 - Disclosure - Regulatory Matters - GPC Nuclear Construction Regulatory Matters (Details)

9954504 - Disclosure - Regulatory Matters - MPC (Details)

9954505 - Disclosure - Regulatory Matters - GAS Schedule of Infrastructure Replacement Programs and Capital Projects (Details)

9954506 - Disclosure - Regulatory Matters - GAS Nicor Gas (Details)

9954507 - Disclosure - Regulatory Matters - GAS Atlanta Gas Light (Details)

9954508 - Disclosure - Regulatory Matters - GAS Virginia Natural Gas (Details)

9954509 - Disclosure - Contingencies - General Litigation Matters (Details)

9954510 - Disclosure - Contingencies - Environmental Remediation (Details)

9954511 - Disclosure - Contingencies - Other Matters (Details)

9954512 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Disaggregation of Revenue (Details)

9954513 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Contract Balances (Details)

9954514 - Disclosure - Revenue from Contracts with Customers and Lease Income - Narrative (Details)

9954515 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Remaining Performance Obligations (Details)

9954516 - Disclosure - Revenue from Contracts with Customers and Lease Income - Schedule of Lease Income (Details)

9954517 - Disclosure - Consolidated Entities and Equity Method Investments - Narrative (Details)

9954518 - Disclosure - Consolidated Entities and Equity Method Investments - Schedule of Equity Method Investments (Details)

9954519 - Disclosure - Consolidated Entities and Equity Method Investments - Schedule of Earnings (Loss) from Equity Method Investments (Details)

9954520 - Disclosure - Financing and Leases - Schedule of Credit Arrangements (Details)

9954521 - Disclosure - Financing and Leases - Narrative (Details)

9954522 - Disclosure - Financing and Leases - Convertible Senior Notes (Details)

9954523 - Disclosure - Financing and Leases - Schedule of Shares Used to Compute Diluted Earnings Per Share (Details)

9954524 - Disclosure - Income Taxes - Narrative (Details)

9954525 - Disclosure - Retirement Benefits (Details)

9954526 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details)

9954527 - Disclosure - Fair Value Measurements - Schedule of Increase (Decrease) In Fair Value Of Funds (Details)

9954528 - Disclosure - Fair Value Measurements - Narrative (Details)

9954529 - Disclosure - Fair Value Measurements - Schedule of Financial Instruments for which Carrying Amount did not Equal Fair Value (Details)

9954530 - Disclosure - Derivatives - Schedule of Energy-Related Derivatives (Details)

9954531 - Disclosure - Derivatives - Narrative (Details)

9954532 - Disclosure - Derivatives - Schedule of Interest Rate Derivatives (Details)

9954533 - Disclosure - Derivatives - Schedule of Foreign Currency Derivatives (Details)

9954534 - Disclosure - Derivatives - Schedule of Derivative Category and Balance Sheet Location (Details)

9954535 - Disclosure - Derivatives - Schedule of Pre-tax Effects of Unrealized Derivative Gains (Losses) (Details)

9954536 - Disclosure - Derivatives - Schedule of Pre-Tax Effects of Hedging on AOCI (Details)

9954537 - Disclosure - Derivatives - Schedule of Pre-Tax Effects of Cash Flow and Fair Value Hedging on Income (Details)

9954538 - Disclosure - Derivatives - Schedule of Cumulative Basis Adjustments for Fair Value Hedges (Details)

9954539 - Disclosure - Derivatives - Schedule of Pre-tax Effect of Interest Rate and Energy Related Derivatives on Income (Details)

9954540 - Disclosure - Acquisitions and Dispositions - Southern Power (Details)

9954541 - Disclosure - Acquisitions and Dispositions - Southern Company Gas (Details)

9954542 - Disclosure - Segment and Related Information - Narrative (Details)

9954543 - Disclosure - Segment and Related Information - Schedule of Financial Data for Business Segments (Details)

9954544 - Disclosure - Segment and Related Information - Schedule of Financial Data for Products and Services (Details)

9954545 - Disclosure - Segment and Related Information - Schedule of Business Segment Financial Data (Details)