Supplemental Financial Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Cash and Cash Equivalents [Line Items]
Cash paid for interest	$ 275	$ 292
Noncash additions to operating lease assets	58	68
Continuing operations
Cash and Cash Equivalents [Line Items]
Cash paid (received) for income taxes:	(8)	45
Discontinued operations
Cash and Cash Equivalents [Line Items]
Cash paid (received) for income taxes:	$ 2	$ 5

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.

No definition available.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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