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Document and Entity Information
Financial Statements
Condensed Consolidated Statements of Income (Unaudited)
Condensed Consolidated Statements of Comprehensive Income (Unaudited)
Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical)
Condensed Consolidated Balance Sheets (Unaudited)
Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)
Condensed Consolidated Statements of Cash Flows (Unaudited)
Condensed Consolidated Statements of Stockholders' Equity (Unaudited)
Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (Unaudited)
Notes to Financial Statements
Summary of Accounting Policies
Calculation of Earnings Per Share
Acquisitions and Divestitures (Notes)
Revenue Recognition (Notes)
Rates and Other Regulatory Activities
Environmental Commitments and Contingencies
Other Commitments and Contingencies
Segment Information
Stockholder's Equity - Accumulated Other Comprehensive Income (Loss)
Employee Benefit Plans
Investments
Share-Based Compensation
Derivative Instruments
Fair Value of Financial Instruments
Long-Term Debt
Short-Term Borrowings (Notes)
Leases Leases
Accounting Policies
Summary of Accounting Policies (Policies)
Notes Tables
Summary of Accounting Policies Summary of Accounting Policies (Tables)
Calculation of Earnings Per Share (Tables)
Acquisitions and Divestitures (Tables)
Revenue Recognition (Tables)
Rates and Other Regulatory Activities Rates and Regulatory Activities (Tables)
Environmental Commitments and Contingencies Summary of Environmental Liabilities (Tables)
Segment Information (Tables)
Stockholder's Equity - Accumulated Other Comprehensive Income (Loss) (Tables)
Employee Benefit Plans (Tables)
Investments (Tables)
Share-Based Compensation (Tables)
Derivative Instruments (Tables)
Fair Value of Financial Instruments (Tables)
Long-Term Debt (Tables)
Leases Leases (Tables)
Notes Details
Summary of Accounting policies - Additional Information (Details)
Summary of Accounting Policies Acquisitions Additional information (Details)
Calculation of Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail)
Acquisitions and Divestitures (Details)
Revenue Recognition Disegragation of Revenue (Details)
Revenue Recognition Contract Balances with Customers (Details)
Revenue Recognition Remaining Performance Obligations (Details)
Rates and Other Regulatory Activities - Additional Information (Detail)
Environmental Commitments and Contingencies - Additional Information (Detail)
Other Commitments and Contingencies - Additional Information (Detail)
Segment Information - Schedule of Segment Reporting Information by Segment (Detail)
Stockholder's Equity - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Loss (Detail)
Stockholder's Equity - Accumulated Other Comprehensive Income (Loss) - Reclassifications of Accumulated Other Comprehensive Loss (Detail)
Employee Benefit Plans (Detail)
Employee Benefit Plans - Additional Information (Detail)
Employee Benefit Plans - Amounts Included in Regulatory Asset and Accumulated Other Comprehensive Income/Loss Recognized as Net Periodic Benefit Cost (Detail)
Investments - Schedule of Investments (Details)
Investments - Additional Information (Detail)
Share-Based Compensation - Share-Based Compensation Amounts Included in Net Income (Detail)
Share-Based Compensation - Summary of Stock Activity under the SICP (Detail)
Share-Based Compensation - Additional Information (Detail)
Derivative Instruments Volume of Derivative Activity (Details)
Derivative Instruments - Additional Information (Detail)
Derivative Instruments - Fair Values of Derivative Contracts Recorded in Condensed Consolidated Balance Sheet (Detail)
Derivative Instruments - Effects of Gains and Losses from Derivative Instruments on Condensed Consolidated Financial Statements (Detail)
Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)
Fair Value of Financial Instruments - Summary of Changes in Fair Value of Investments (Detail)
Fair Value of Financial Instruments - Additional Information (Detail)
Long-Term Debt - Outstanding Long-Term Debt (Detail)
Long-Term Debt - Outstanding Long-Term Debt- Supplemental Information (Detail)
Long-Term Debt - Additional Information (Detail)
Short-Term Borrowings (Details)
Leases (Details)
Leases Leases - Lease Cost Additional Information (Details)
Leases Leases - Right of Use Asset and Lease Liability Balance Sheet Classification Additional Information (Details)
Leases Leases - Weighted Average Remaining Lease Term Additional Information (Details)
Leases Leases - Cash Flow Additional Information (Details)
Leases Leases - Schedule of Future Maturities Additional Information (Details)
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