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Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

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Basis of Presentation - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 2,257		$ 4,194
Restricted cash:
Prepaid expenses and other	329		319
Other assets	136		122
Assets held for sale:
Prepaid expenses and other	50		0
Cash, cash equivalents and restricted cash	2,772	$ 3,908	$ 4,635	$ 3,497
Increase / (Decrease) in cash, cash equivalents and restricted cash	(1,863)	$ 411
Cash and cash equivalents
Assets held for sale:
Increase / (Decrease) in cash, cash equivalents and restricted cash	(1,937)
Prepaid expenses and other
Assets held for sale:
Increase / (Decrease) in cash, cash equivalents and restricted cash	10
Increase / (Decrease) in assets held-for-sale	50
Other assets
Assets held for sale:
Increase / (Decrease) in cash, cash equivalents and restricted cash	$ 14