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Element us-gaap_UtilitiesOperatingExpenseMaintenance had a mix of decimals attribute values: -6 -3. Element us-gaap_UtilitiesOperatingExpenseOperations had a mix of decimals attribute values: -6 -3. Element us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets had a mix of decimals attribute values: -6 -3. 'Monetary' elements on report '000110 - Statement - Consolidated Statements of Income' had a mix of different decimal attribute values. 'Monetary' elements on report '000115 - Statement - Consolidated Statements of Comprehensive Income (Loss)' had a mix of different decimal attribute values. 'Monetary' elements on report '000116 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Parenthetical)' had a mix of different decimal attribute values. 'Monetary' elements on report '000120 - Statement - Condensed Consolidated Statements of Changes in Equity' had a mix of different decimal attribute values. 'Monetary' elements on report '000130 - Statement - Consolidated Balance Sheets' had a mix of different decimal attribute values. 'Monetary' elements on report '000131 - Statement - Consolidated Balance Sheets (Parenthetical)' had a mix of different decimal attribute values. 'Monetary' elements on report '000140 - Statement - Consolidated Statements of Cash Flows' had a mix of different decimal attribute values. 'Monetary' elements on report '000605 - Disclosure - Organization and Summary of Significant Accounting Policies (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000615 - Disclosure - Comprehensive Income (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000620 - Disclosure - Rate Matters (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000630 - Disclosure - Commitments, Guarantees and Contingencies (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000635 - Disclosure - Acquisitions Dispositions and Discontinued Operations (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000640 - Disclosure - Benefit Plans 1 (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000642 - Disclosure - Benefit Plans 3 (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000645 - Disclosure - Business Segments (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000650 - Disclosure - Derivatives and Hedging (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000655 - Disclosure - Fair Value Long-term Debt, Other Temporary Investments, Nuclear Trusts (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000656 - Disclosure - Fair Value Financial Assets Liabilities (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000660 - Disclosure - Income Taxes (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000665 - Disclosure - Leases (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000670 - Disclosure - Financing Activities (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000675 - Disclosure - Stock-Based Compensation (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000677 - Disclosure - Related Party Transactions (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000678 - Disclosure - Variable Interest Entities (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000680 - Disclosure - Property, Plant and Equipment (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '000690 - Disclosure - Unaudited Quarterly Financial Information (Details)' had a mix of different decimal attribute values. Process Flow-Through: 000110 - Statement - Consolidated Statements of Income Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012' Process Flow-Through: 000115 - Statement - Consolidated Statements of Comprehensive Income (Loss) Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012' Process Flow-Through: 000116 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) Process Flow-Through: 000121 - Statement - Condensed Consolidated Statements of Changes in Equity (Parenthetical) Process Flow-Through: 000130 - Statement - Consolidated Balance Sheets Process Flow-Through: Removing column 'Dec. 31, 2011' Process Flow-Through: Removing column 'Dec. 31, 2010' Process Flow-Through: 000131 - Statement - Consolidated Balance Sheets (Parenthetical) Process Flow-Through: Removing column 'Dec. 31, 2011' Process Flow-Through: Removing column 'Dec. 31, 2010' Process Flow-Through: 000140 - Statement - Consolidated Statements of Cash Flows aep-20131231.xml aep-20131231.xsd aep-20131231_cal.xml aep-20131231_def.xml aep-20131231_lab.xml aep-20131231_pre.xml true true