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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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Financing Receivable, Maximum Potential Exposure

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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