SOUTHERN CO

0001000 - Document - Document and Entity Information

1001000 - Statement - Condensed Consolidated Statements of Income (Unaudited)

1001001 - Statement - Condensed Consolidated Statements of Income (Unaudited) - Parenthetical

1002000 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited)

1002501 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical)

1003000 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)

1003501 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical)

1004000 - Statement - Condensed Consolidated Balance Sheets (Unaudited)

1004501 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

2101100 - Disclosure - Introduction

2102100 - Disclosure - Contingencies and Regulatory Matters

2103100 - Disclosure - Fair Value Measurements

2104100 - Disclosure - Stockholders' Equity

2105100 - Disclosure - Financing

2106100 - Disclosure - Retirement Benefits

2107100 - Disclosure - Income Taxes

2108100 - Disclosure - Derivatives

2109100 - Disclosure - Acquisitions

2113100 - Disclosure - Joint Ownership Agreements

2114100 - Disclosure - Segment and Related Information

2201201 - Disclosure - Introduction (Policies)

2301302 - Disclosure - Introduction (Tables)

2302301 - Disclosure - Contingencies and Regulatory Matters (Tables)

2303301 - Disclosure - Fair Value Measurements (Tables)

2304301 - Disclosure - Stockholders' Equity (Tables)

2305301 - Disclosure - Financing (Tables)

2306301 - Disclosure - Retirement Benefits (Tables)

2307301 - Disclosure - Income Taxes (Tables)

2308301 - Disclosure - Derivatives (Tables)

2309301 - Disclosure - Acquisitions (Tables)

2313301 - Disclosure - Joint Ownership Agreements (Tables)

2314301 - Disclosure - Segment and Related Information (Tables)

2401403 - Disclosure - Introduction - Narrative (Details)

2401404 - Disclosure - Introduction - Goodwill and Intangible Assets (Details)

2401405 - Disclosure - Introduction - Intangibles, Amortization (Details)

2402402 - Disclosure - Contingencies and Regulatory Matters - Narrative (Details)

2402403 - Disclosure - Contingencies and Regulatory Matters - Recovery Balance of Each Regulatory Clause - Alabama Power (Details)

2402404 - Disclosure - Contingencies and Regulatory Matters - Recovery Balance of Each Regulatory Clause - Gulf Power (Details)

2402405 - Disclosure - Contingencies and Regulatory Matters - Current And Actual Cost Estimate (Details)

2403402 - Disclosure - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)

2403403 - Disclosure - Fair Value Measurements - Narrative (Details)

2403404 - Disclosure - Fair Value Measurements - Fair Value Measurements Of Investments Calculated At Net Asset Value Per Share (Details)

2403405 - Disclosure - Fair Value Measurements - Financial Instruments for which Carrying Amount did not Equal Fair Value (Details)

2404402 - Disclosure - Stockholders' Equity - Earnings per Share (Details)

2404403 - Disclosure - Stockholders' Equity - Changes in Stockholders' Equity (Details)

2405402 - Disclosure - Financing - Narrative (Details)

2405403 - Disclosure - Financing - Schedule of Credit Arrangements (Details)

2405404 - Disclosure - Financing - Schedule of Long-Term Debt Financing Activities (Details)

2406402 - Disclosure - Retirement Benefits (Details)

2407402 - Disclosure - Income Taxes (Details)

2408402 - Disclosure - Derivatives - Energy-Related and Interest Rate Derivatives (Details)

2408403 - Disclosure - Derivatives - Narrative (Details)

2408404 - Disclosure - Derivatives - Foreign Currency Derivatives (Details)

2408405 - Disclosure - Derivatives - Derivative Financial Statement Presentation and Amounts With Balance Sheet Offsetting (Details)

2408406 - Disclosure - Derivatives - Pre-tax Effects of Derivatives Designated as Cash Flow Hedging Instruments (Details)

2408407 - Disclosure - Derivatives - Pre-tax Effects of Derivatives Not Designated as Hedging (Details)

2408408 - Disclosure - Derivatives - Pre-tax Effects of Derivatives as Fair Value Hedging Relationships (Details)

2409402 - Disclosure - Acquisitions - Narrative (Details)

2409403 - Disclosure - Acquisitions - Schedule of Acquisitions (Details)

2409404 - Disclosure - Acquisitions - Schedule of Pro Forma Consolidated Information (Details)

2409405 - Disclosure - Acquisitions - Schedule of Construction Projects (Details)

2413402 - Disclosure - Joint Ownership Agreements - Balance Sheet Equity Method Investment Carrying Amount (Details)

2413403 - Disclosure - Joint Ownership Agreements - Income Statement Equity Method Investment Carrying Amount (Details)

2413404 - Disclosure - Joint Ownership Agreements - Narrative (Details)

2413405 - Disclosure - Joint Ownership Agreements - Investment in SNG (Details)

2414402 - Disclosure - Segment and Related Information - Financial Data for Business Segments (Details)

2414403 - Disclosure - Segment and Related Information - Financial Data for Products and Services (Details)

2414404 - Disclosure - Segment and Related Information - Narrative (Details)