Fair Value Measurement - Schedule of Financial Assets and Liabilities at Fair Value (Details) - Fair Value, Recurring - Level 1 - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Money market trust
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 1,582	$ 390
Restricted cash	86	77
Money market account
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 1,205	$ 0