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Commitments and Contingencies (Narrative) (Details) $ in Millions, $ in Millions | Mar. 31, 2023 USD ($) | Mar. 31, 2023 CAD ($) | Dec. 31, 2022 USD ($)
--- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |
Accrued contingent liabilities | $ 19 |  | $ 19
Revolving Term Credit Facility | Vector Pipeline |  |  |
Loss Contingencies [Line Items] |  |  |
Financing receivables |  | $ 70 |
Maximum potential payout under line of credit | $ 52 |  |

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