Fair Value Measurement of Assets and Liabilities - Warrants Measured Valued Using Unobservable Inputs (Details) - Recurring - Significant Unobservable Inputs (Level 3) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Minimum \| Probability of vesting
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Warrant, measurement input	0.000
Maximum \| Probability of vesting
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Warrant, measurement input	0.950
Weighted Average \| Probability of vesting
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Warrant, measurement input	0.784
Weighted Average \| Equity volatility
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Warrant, measurement input	0.44
Warrant
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 364	$ 214
Change in fair value	(25)	150
Ending balance	$ 339	$ 364