v3.26.1
Fair Value - Schedule of Fair Value Measurements - Nonrecurring Basis (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held-for-sale, net $ 337 $ 549
Finance receivables and loans, net 136,350 133,964
Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held-for-sale, net 336 545
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments (15) (32)
Assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 358 589
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments (113) (126)
Nonmarketable equity investments | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 2 10
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments (1) 4
Repossessed and foreclosed assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 8 7
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments (1) (1)
Level 1 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held-for-sale, net 0 0
Level 1 | Assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 0 0
Level 1 | Nonmarketable equity investments | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 0 0
Level 1 | Repossessed and foreclosed assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 0 0
Level 2 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held-for-sale, net 0 0
Level 2 | Assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 0 9
Level 2 | Nonmarketable equity investments | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 0 9
Level 2 | Repossessed and foreclosed assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 0 0
Level 3 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held-for-sale, net 336 545
Level 3 | Assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 358 580
Level 3 | Nonmarketable equity investments | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 2 1
Level 3 | Repossessed and foreclosed assets | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other assets 8 7
Commercial | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 12 27
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments (96) (97)
Commercial | Level 1 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 0 0
Commercial | Level 2 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 0 0
Commercial | Level 3 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 12 27
Other | Commercial | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 12 27
Lower-of-cost-or-fair-value reserve, valuation reserve, or cumulative adjustments (96) (97)
Other | Commercial | Level 1 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 0 0
Other | Commercial | Level 2 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net 0 0
Other | Commercial | Level 3 | Fair Value, Nonrecurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Finance receivables and loans, net $ 12 $ 27