Fair Value Measurement of Assets and Liabilities - Narrative (Details) $ in Millions	Dec. 31, 2024 USD ($) tranche	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Investments | Fair Value, Measurements, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant	$ 54	$ 47
Warrant
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Number of fixed tranches | tranche	2
Gmarket
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment balance	$ 323			$ 728
Warrant	0	$ 335	$ 431
Gmarket | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment balance	$ 323