v3.25.2
Related Party Transactions - Schedule of Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Related Party          
Related Party Transaction [Line Items]          
Subvention receivable from GM $ 579   $ 579   $ 360
Taxes receivable from (payable to) GM (20)   (20)    
Taxes receivable from (payable to) GM         70
Leased vehicle subvention earned 437 $ 359 852 $ 723  
Commercial Finance Receivables          
Related Party Transaction [Line Items]          
Commercial finance receivables due from dealers consolidated by GM 16,723   16,723   19,901
Commercial Finance Receivables | Revolving Credit Facility | Line of Credit | Cruise          
Related Party Transaction [Line Items]          
Commercial finance receivables due from Cruise 0   0   395
Commercial Finance Receivables | Related Party          
Related Party Transaction [Line Items]          
Commercial finance receivables due from dealers consolidated by GM 324   324   279
Commercial loan funding payable to GM 101   101   100
Interest subvention earned 22 30 45 57  
Retail Finance Receivables          
Related Party Transaction [Line Items]          
Commercial finance receivables due from dealers consolidated by GM 77,837 73,335 77,837 73,335 $ 76,066
Retail Finance Receivables | Related Party          
Related Party Transaction [Line Items]          
Interest subvention earned $ 342 $ 316 $ 686 $ 624