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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of valuation and qualifying accounts and reserves.

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

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Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense.

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Amount of decrease in valuation and qualifying accounts and reserves.

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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash, Cash Equivalents and Restricted Cash:
Cash and cash equivalents	$ 583	$ 180
Restricted cash	255	140
Total cash, cash equivalents and restricted cash shown in the Statements of Consolidated Cash Flows	838	320	$ 206	$ 2,965
Allowance for Credit Losses [Member]
Movement in valuation allowances and reserves [Roll Forward]
Balance at beginning of period	35	54	53
Charged to costs and expenses	3	1	6
Charged to other accounts	0	0	1
Deductions	0	(20)	(6)
Balance at end of period	$ 38	$ 35	$ 54
Minor Investment [Member] \| Minimum [Member]
Consolidation Policy [Abstract]
Equity method of ownership interest	3.00%
Minor Investment [Member] \| Maximum [Member]
Consolidation Policy [Abstract]
Equity method of ownership interest	50.00%
Major Investment [Member] \| Minimum [Member]
Consolidation Policy [Abstract]
Equity method of ownership interest	20.00%
Major Investment [Member] \| Maximum [Member]
Consolidation Policy [Abstract]
Equity method of ownership interest	50.00%