Fair Value Measurement - Schedule of Financial Assets and Liabilities at Fair Value (Details) - Fair value, recurring - Level 1 - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Money market trust
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 1,755	$ 1,582
Restricted cash	83	86
Money market fund
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 828	$ 1,205