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Description of Business and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 4,194	$ 2,065
Restricted cash, current	319	1,244
Restricted cash, noncurrent	122	188
Cash, cash equivalents and restricted cash	4,635	3,497	$ 4,111	$ 4,161
Increase (Decrease) in cash, cash equivalents and restricted cash	1,138	$ (614)	$ (50)
Cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Increase (Decrease) in cash, cash equivalents and restricted cash	2,129
Prepaid expenses and other
Cash and Cash Equivalents [Line Items]
Increase (Decrease) in cash, cash equivalents and restricted cash	(925)
Other assets
Cash and Cash Equivalents [Line Items]
Increase (Decrease) in cash, cash equivalents and restricted cash	$ (66)