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Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Line Items]
Option to terminate leases, Lessee	1 year
Retained earnings (deficit)	$ 562	$ 884
Option to terminate leases, Lessor	1 year
Lease revenue	$ 52	$ 62	$ 63
Minimum [Member]
Leases [Line Items]
Operating and finance lease terms, Lessee	1 year
Operator lease terms, Lessor	1 year
Maximum [Member]
Leases [Line Items]
Operating and finance lease terms, Lessee	83 years
Operator lease terms, Lessor	62 years

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Leases [Line Items]

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Lessee, Operating And Finance Lease, Option to Terminate, Period

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Lessee, Operating And Finance Lease, Term of Contract

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Lessor, Operating Lease, Option to Terminate, Period

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Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.

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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of accumulated undistributed earnings (deficit).

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