0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Unaudited Condensed Consolidated Statements Of Operations link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Unaudited Condensed Consolidated Statements of Comprehensive Income Statement link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Unaudited Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Unaudited Condensed Consolidated Statements Of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Unaudited Condensed Consolidated Statements of Common Stockholders' Equity ( Deficit) Statement link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - Overview and Summary Of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Fair Value link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Derivative Instruments and Hedging Activities (Notes) link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Commitments And Contingencies link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Business Segment Information (Notes) link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Revenue (Notes) link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Leases (Notes) link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Asset Retirement Obligations link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Overview and Summary Of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Leases, Codification Topic 842 (Policies) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Overview and Summary Of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Regulatory Matters (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Fair Value (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Derivative Instruments and Hedging Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Business Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Subsequent Events (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Asset Retirement Obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Overview and Summary of Significant Accounting Policies (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Overview and Summary Of Significant Accounting Policies Schedule of Changes in Asset Retirement Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Overview and Summary Of Significant Accounting Policies Schedule of cash, restricted cash and cash equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Overview and Summary Of Significant Accounting Policies Schedule of Accounts and notes receivable (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Regulatory Matters (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Fair Value (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Fair Value (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Fair Value Summary of fair value Assets and Liabilities Measured on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Fair Value (Schedule Of Face And Fair Value Of Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Derivative Instruments and Hedging Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Derivative Instruments and Hedging Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Debt (Schedule Long-Term Indebtedness) (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Debt (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Income Taxes (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Benefit Plans (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Benefit Plans (Schedule Of Defined Benefit Plans Disclosures) (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Business Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink