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Rate and Regulatory Matters (Notes)	9 Months Ended
Rate and Regulatory Matters (Notes)	Sep. 30, 2022
Regulated Operations [Abstract]
Rate and Regulatory Matters	Rate and Regulatory Matters Rate Case Settlement Filing On August 26, 2022, we filed with FERC a Petition for Approval of Pre-Filing Stipulation and Settlement Agreement (Settlement) and were assigned Docket No. RP22-1155. The Settlement established a new general system firm Rate Schedule TF-1 (Large Customer) demand rate of $0.37250 per dekatherm with a $0.00935 commodity rate, effective January 1, 2023, resolves other rate issues, establishes a Modernization and Emission Reduction Program and satisfies our rate case filing obligation under our settlement in Docket No. RP17-346. Provisions were included in the Settlement that we can file new rates to be effective after January 1, 2026, and that a general rate case filing must be made for rates to become effective no later than April 1, 2028. As a result of this filing, we have reclassified certain long-term regulatory liabilities to current as of September 30, 2022.