v3.26.1
Securitization Activities - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Assets securitized in a non-cash exchange for loans and investments $ 184 $ 133  
Retained Interests 6,932   $ 6,458
Notional amount related to other continuing involvement 4,070   4,130
Seller financing related to loans sold 62 340  
Loans sold 77 425  
Proceeds from collection of finance receivables 80 $ 198  
Outstanding Principal Amount 196,709   192,909
Retained interest 6,810   6,370
Corporate debt and other asset-backed      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Retained Interests 473   511
Outstanding Principal Amount 12,979   13,904
Corporate debt and other asset-backed | Installment      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Outstanding Principal Amount 1,180   1,180
Derivatives And Commitments      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Retained Interests 1,470   1,480
Other retained interests      
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Retained interest $ 428   506
Weighted average life (years) 4 years 1 month 6 days 4 years 1 month 6 days  
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Other than 10 or 20 Percent Adverse Change in Other Assumption $ 473   $ 511