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Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952159 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Mergers, Acquisitions and Divestitures link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - 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Disclosure - Regulatory Matters - Pending General Rate Case Filing Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Regulatory Matters - Schedule of Annualized Incremental Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Regulatory Matters - Pending Infrastructure Surcharge Filings Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Revenue Recognition - Disaggregated Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Revenue Recognition - Contract Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Revenue Recognition - Remaining Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Mergers, Acquisitions and Divestitures - 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Disclosure - Short-Term Debt - Schedule of Company's Aggregate Credit Facility Commitments, Commercial Paper Limit, Letter of Credit Availability and Availability Capacity (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Short-Term Debt - Schedule of Company's Aggregate Credit Facility Commitments, Commercial Paper Limit, Letter of Credit Availability and Availability Capacity (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Short-Term Debt - Schedule of Availability Liquidity (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Pension and Other Postretirement Benefits - Schedule of Net Periodic Benefit Cost Components (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Pension and Other Postretirement Benefits - 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