100030 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)
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100010 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited)
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100020 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)
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100050 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited)
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100070 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)
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100080 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical)
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100040 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)
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100090 - Disclosure - Interim Financial Statements
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100100 - Disclosure - Summary of Significant Accounting Policies
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100110 - Disclosure - Segment and Related Information
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100120 - Disclosure - Earnings Per Share
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100130 - Disclosure - Income Taxes
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100160 - Disclosure - Acquisitions, Development and Divestitures
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100170 - Disclosure - Defined Benefits
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100180 - Disclosure - Commitments and Contingencies
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100190 - Disclosure - Related Party Transactions
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100200 - Disclosure - Other Income (Expense) - net
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100210 - Disclosure - Fair Value Measurements and Credit Concentration
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100220 - Disclosure - Derivative Instruments and Hedging Activities
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100240 - Disclosure - Asset Retirement Obligations
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100250 - Disclosure - Available-for-Sale Securities
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100230 - Disclosure - Goodwill
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100270 - Disclosure - Subsequent Event - Acquisition of Central Networks
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100150 - Disclosure - Financing Activities
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100260 - Disclosure - Variable Interest Entities
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300130 - Disclosure - Income Taxes (Tables)
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400130 - Disclosure - Income Taxes (Details)
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300240 - Disclosure - Asset Retirement Obligations (Tables)
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400240 - Disclosure - Asset Retirement Obligations (Details)
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300210 - Disclosure - Fair Value Measurements and Credit Concentration (Tables)
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200000 - Disclosure - Summary of Significant Accounting Policies (Policies)
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400100 - Disclosure - Summary of Significant Accounting Policies (Details)
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300110 - Disclosure - Segment and Related Information (Tables)
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400110 - Disclosure - Segment and Related Information (Details)
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300120 - Disclosure - Earnings Per Share (Tables)
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400120 - Disclosure - Earnings Per Share (Details)
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400260 - Disclosure - Variable Interest Entities (Details)
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300150 - Disclosure - Financing Activities (Tables)
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400150 - Disclosure - Financing Activities (Credit Arrangements and ST Debt) (Details)
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300160 - Disclosure - Acquisitions, Development and Divestures (Tables)
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400160 - Disclosure - Acquisitions, Development and Divestures (Details)
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300230 - Disclosure - Goodwill (Tables)
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400230 - Disclosure - Goodwill (Details)
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300200 - Disclosure - Other Income (Expense) - net (Tables)
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400200 - Disclosure - Other Income (Expense) - net (Details)
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300250 - Disclosure - Available-for-Sale Securities (Tables)
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400250 - Disclosure - Available-for-Sale Securities (Details)
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200030 - Disclosure - Derivative Instruments and Hedging Activities (Policies)
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300220 - Disclosure - Derivative Instruments and Hedging Activities (Tables)
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300170 - Disclosure - Defined Benefits (Tables)
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400170 - Disclosure - Defined Benefits (Details)
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300180 - Disclosure - Commitments and Contingencies (Tables)
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400180 - Disclosure - Commitments and Contingencies (Energy Purchases, Energy Sales, Other Commitments and Legal Matters) (Details)
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200010 - Disclosure - Earnings Per Share (Policies)
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100060 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (Parenthetical)
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200020 - Disclosure - Income Taxes (Policies)
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100140 - Disclosure - Utility Rate Regulation
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400140 - Disclosure - Utility Rate Regulation (Details)
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400210 - Disclosure - Fair Value Measurements and Credit Concentration (Assets and Liabilities Measured on Recurring Basis Table) (Details)
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400223 - Disclosure - Derivative Instruments and Hedging Activities (Fair Values) (Details)
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400224 - Disclosure - Derivative Instruments and Hedging Activities (Gains and Losses) (Details)
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400211 - Disclosure - Fair Value Measurements and Credit Concentration (Net Asset and Liability Measured on Recurring Basis Level 3 Observable Input Reconciliation Rollforward) (Details)
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400212 - Disclosure - Fair Value Measurements and Credit Concentration (Net Asset and Liability Measured on Recurring Basis Level 3 Gain Loss Included in Earnings and Other Recurring Numeric Data) (Details)
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400213 - Disclosure - Fair Value Measurements and Credit Concentration (Nonrecurring Fair Value Measurements and Credit Concentration) (Details)
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400220 - Disclosure - Derivative Instruments and Hedging Activities (Intro) (Details)
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300140 - Disclosure - Utility Rate Regulation (Tables)
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400221 - Disclosure - Derivative Instruments and Hedging Activities (Commodity Volumetric Activity) (Details)
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400222 - Disclosure - Derivative Instruments and Hedging Activities (Risk Disclosures) (Details)
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400151 - Disclosure - Financing Activities (LT Debt and Equity Securities) (Details)
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400152 - Disclosure - Financing Activities (Distributions and Capital Contributions) (Details)
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200028 - Disclosure - Fair Value Measurements and Credit Concentration (Policies)
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300270 - Disclosure - Subsequent Event - Acquisition of Central Networks (Tables)
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100000 - Document - Document and Entity Information
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400182 - Disclosure - Commitments and Contingencies (Guarantees and Other Assurances) (Details)
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400181 - Disclosure - Commitments and Contingencies (Environmental Matter and Other) (Details)
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100265 - Disclosure - New Accounting Guidance Pending Adoption
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