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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, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 2,065	$ 2,605
Restricted cash, current	1,244	1,343
Restricted cash, noncurrent	188	163
Cash, cash equivalents and restricted cash	3,497	4,111	$ 4,161	$ 23,498
Increase (decrease) in cash, cash equivalents and restricted cash	(614)	$ (50)	$ (19,337)
Cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Increase (decrease) in cash, cash equivalents and restricted cash	(540)
Prepaid expenses and other
Cash and Cash Equivalents [Line Items]
Increase (decrease) in cash, cash equivalents and restricted cash	(99)
Other assets
Cash and Cash Equivalents [Line Items]
Increase (decrease) in cash, cash equivalents and restricted cash	$ 25