Cash And Cash Equivalents Non-Cash Activities (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Accrued capital expenditures	$ 795	$ 421
Right-of-Use Assets Obtained in Exchange for Liabilities	29	1
Stock Issued During Period, Value, Dividend Reinvestment Plan	10	22
Repayments of Senior Debt	0	749
Subsidiary units issued	5	0
USAC [Member]
Convertible Preferred Stock Converted to Other Securities	0	38
USAC [Member] \| goverment securities transferred in connection with the leagal defeasance of senior notes due 2026
Repayments of Senior Debt	0	749
USAC [Member] \| legal defeasance of senior notes due 2026
Repayments of Senior Debt	$ 0	$ 725

Total amount of increases in right-of-use assets obtained in exchange for both operating and lease liabilities.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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Value of convertible preferred stock that was converted to other securities.

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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