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Derivative Instruments - Summary of Location and Amount of Gains and Losses of Derivative Contracts (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]    
Derivative, Gain (Loss) on Derivative, Net $ 2 $ (4)
Derivative, Gain (Loss) on Derivatives, Total Net 17 (105)
Net gains (losses) on derivative contracts [Domain] | Interest Rate Swap [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Derivative, Gain (Loss) on Derivative, Net 2 (3)
Net gains (losses) on derivative contracts [Domain] | Warrants [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Derivative, Gain (Loss) on Derivative, Net 0 0
Income Loss On Variable Interest Entities [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Derivative, Gain (Loss) on Derivative, Net 16 (102)
Income Loss On Variable Interest Entities [Member] | Interest Rate Swap [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Derivative, Gain (Loss) on Derivative, Net 14 (3)
Income Loss On Variable Interest Entities [Member] | Currency Swaps [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Debt and Equity Securities, FV-NI [Line Items]    
Derivative, Gain (Loss) on Derivative, Net $ 2 $ (99)