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Recent Accounting Pronouncements - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2023
USD ($)
payment
Dec. 31, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Allowance for finance receivable $ (2,298) $ (2,311) $ (2,071) $ (2,095)
Retained earnings $ 2,188 2,119 $ 1,907  
Number of payments past due before which a loan is charged off to the allowance for finance receivable losses | payment 7      
Number of payments past due before which a loan is charged off to the allowance for finance receivable losses, period 180 days      
Number of payments past due before repossession | payment 2      
Number of payments past due before repossession, period 30 days      
Cumulative Effect, Period Of Adoption, Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Allowance for finance receivable   16    
Deferred tax asset   4    
Retained earnings   $ 12