Variable Interest Entities (Narrative) (Details) $ in Millions	3 Months Ended
Mar. 31, 2026 USD ($) MMcf	Dec. 31, 2025 USD ($)
Variable Interest Entity [Line Items]
Accounts payable and accrued liabilities, current	$ 1,925	$ 1,861
Veresen Midstream Limited Partnership [Member]
Variable Interest Entity [Line Items]
Variable interest entity, financial support, term of assessment	8 years
Variable interest entity, reporting entity involvement, maximum loss exposure, amount	$ 697
Veresen Midstream Limited Partnership [Member] \| Payout of Minimum Costs [Member]
Variable Interest Entity [Line Items]
Accounts payable and accrued liabilities, current	$ 28	$ 29
Veresen Midstream Limited Partnership [Member] \| Natural gas gathering and compression [Member]
Variable Interest Entity [Line Items]
Contracted capacity volumes \| MMcf	933
Veresen Midstream Limited Partnership [Member] \| Natural gas processing [Member]
Variable Interest Entity [Line Items]
Contracted capacity volumes \| MMcf	1,192
Veresen Midstream Limited Partnership [Member] \| Minimum [Member]
Variable Interest Entity [Line Items]
Length of remaining terms, in years	5 years
Veresen Midstream Limited Partnership [Member] \| Maximum [Member]
Variable Interest Entity [Line Items]
Length of remaining terms, in years	19 years
Length of renewal term, in years	10 years

Contracted gas processing and/or gas gathering and compression volumes under long-term contracts.

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The point in time, in years, when the assessment will be made to determine whether payout of minimum cost will be made by the reporting entity to the variable interest entity, on certain service agreements, to cover shortfall of cash flows.

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Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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