v3.26.1
Fair Value - Schedule of Fair Value Measurements - Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets    
Equity securities $ 835 $ 876
Total available-for-sale securities $ 23,253 $ 22,973
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Finance receivables and loans, net  
Liabilities    
Investment in any one industry did not exceed percentage 14.00% 11.00%
Carrying amount, equity investments without a readily determinable fair value $ 113 $ 111
Fair value, measurements, recurring    
Assets    
Total available-for-sale securities 23,253 22,973
Total assets, net amount 9  
Total assets 24,037 23,792
Liabilities    
Total derivative contracts in a payable position 3 4
Total liabilities 3 4
Fair value, measurements, recurring | Interest rate    
Liabilities    
Total derivative contracts in a payable position 1  
Fair value, measurements, recurring | Credit    
Liabilities    
Total derivative contracts in a payable position 2  
Fair value, measurements, recurring | Foreign exchange    
Liabilities    
Total derivative contracts in a payable position   4
Fair value, measurements, recurring | Equity securities    
Assets    
Equity securities 775 819
Liabilities    
Carrying amount, equity investments without a readily determinable fair value 60 57
Fair value, measurements, recurring | U.S. Treasury and federal agencies    
Assets    
Total available-for-sale securities 2,515 2,279
Fair value, measurements, recurring | U.S. States and political subdivisions    
Assets    
Total available-for-sale securities 479 551
Fair value, measurements, recurring | Foreign government    
Assets    
Total available-for-sale securities 192 188
Fair value, measurements, recurring | Agency mortgage-backed residential    
Assets    
Total available-for-sale securities 12,789 12,901
Fair value, measurements, recurring | Mortgage-backed residential    
Assets    
Total available-for-sale securities 188 198
Fair value, measurements, recurring | Agency mortgage-backed commercial    
Assets    
Total available-for-sale securities 5,137 4,932
Fair value, measurements, recurring | Asset-backed    
Assets    
Total available-for-sale securities 1 12
Fair value, measurements, recurring | Corporate debt    
Assets    
Total available-for-sale securities 1,952 1,912
Fair value, measurements, recurring | Interest rate    
Assets    
Total assets, net amount 1  
Fair value, measurements, recurring | Foreign exchange    
Assets    
Total assets, net amount 8  
Fair value, measurements, recurring | Level 1    
Assets    
Total available-for-sale securities 2,546 2,310
Total assets, net amount 0  
Total assets 3,321 3,129
Liabilities    
Total derivative contracts in a payable position 0 0
Total liabilities 0 0
Fair value, measurements, recurring | Level 1 | Interest rate    
Liabilities    
Total derivative contracts in a payable position 0  
Fair value, measurements, recurring | Level 1 | Credit    
Liabilities    
Total derivative contracts in a payable position 0  
Fair value, measurements, recurring | Level 1 | Foreign exchange    
Liabilities    
Total derivative contracts in a payable position   0
Fair value, measurements, recurring | Level 1 | Equity securities    
Assets    
Equity securities 775 819
Fair value, measurements, recurring | Level 1 | U.S. Treasury and federal agencies    
Assets    
Total available-for-sale securities 2,515 2,279
Fair value, measurements, recurring | Level 1 | U.S. States and political subdivisions    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 1 | Foreign government    
Assets    
Total available-for-sale securities 31 31
Fair value, measurements, recurring | Level 1 | Agency mortgage-backed residential    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 1 | Mortgage-backed residential    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 1 | Agency mortgage-backed commercial    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 1 | Asset-backed    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 1 | Corporate debt    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 1 | Interest rate    
Assets    
Total assets, net amount 0  
Fair value, measurements, recurring | Level 1 | Foreign exchange    
Assets    
Total assets, net amount 0  
Fair value, measurements, recurring | Level 2    
Assets    
Total available-for-sale securities 20,673 20,629
Total assets, net amount 9  
Total assets 20,682 20,629
Liabilities    
Total derivative contracts in a payable position 1 4
Total liabilities 1 4
Fair value, measurements, recurring | Level 2 | Interest rate    
Liabilities    
Total derivative contracts in a payable position 1  
Fair value, measurements, recurring | Level 2 | Credit    
Liabilities    
Total derivative contracts in a payable position 0  
Fair value, measurements, recurring | Level 2 | Foreign exchange    
Liabilities    
Total derivative contracts in a payable position   4
Fair value, measurements, recurring | Level 2 | Equity securities    
Assets    
Equity securities 0 0
Fair value, measurements, recurring | Level 2 | U.S. Treasury and federal agencies    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 2 | U.S. States and political subdivisions    
Assets    
Total available-for-sale securities 445 517
Fair value, measurements, recurring | Level 2 | Foreign government    
Assets    
Total available-for-sale securities 161 157
Fair value, measurements, recurring | Level 2 | Agency mortgage-backed residential    
Assets    
Total available-for-sale securities 12,789 12,901
Fair value, measurements, recurring | Level 2 | Mortgage-backed residential    
Assets    
Total available-for-sale securities 188 198
Fair value, measurements, recurring | Level 2 | Agency mortgage-backed commercial    
Assets    
Total available-for-sale securities 5,137 4,932
Fair value, measurements, recurring | Level 2 | Asset-backed    
Assets    
Total available-for-sale securities 1 12
Fair value, measurements, recurring | Level 2 | Corporate debt    
Assets    
Total available-for-sale securities 1,952 1,912
Fair value, measurements, recurring | Level 2 | Interest rate    
Assets    
Total assets, net amount 1  
Fair value, measurements, recurring | Level 2 | Foreign exchange    
Assets    
Total assets, net amount 8  
Fair value, measurements, recurring | Level 3    
Assets    
Total available-for-sale securities 34 34
Total assets, net amount 0  
Total assets 34 34
Liabilities    
Total derivative contracts in a payable position 2 0
Total liabilities 2 0
Fair value, measurements, recurring | Level 3 | Interest rate    
Liabilities    
Total derivative contracts in a payable position 0  
Fair value, measurements, recurring | Level 3 | Credit    
Liabilities    
Total derivative contracts in a payable position 2  
Fair value, measurements, recurring | Level 3 | Foreign exchange    
Liabilities    
Total derivative contracts in a payable position   0
Fair value, measurements, recurring | Level 3 | Equity securities    
Assets    
Equity securities 0 0
Fair value, measurements, recurring | Level 3 | U.S. Treasury and federal agencies    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 3 | U.S. States and political subdivisions    
Assets    
Total available-for-sale securities 34 34
Fair value, measurements, recurring | Level 3 | Foreign government    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 3 | Agency mortgage-backed residential    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 3 | Mortgage-backed residential    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 3 | Agency mortgage-backed commercial    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 3 | Asset-backed    
Assets    
Total available-for-sale securities 0 0
Fair value, measurements, recurring | Level 3 | Corporate debt    
Assets    
Total available-for-sale securities 0 $ 0
Fair value, measurements, recurring | Level 3 | Interest rate    
Assets    
Total assets, net amount 0  
Fair value, measurements, recurring | Level 3 | Foreign exchange    
Assets    
Total assets, net amount $ 0