v3.25.4
Fair Value Measurements, Fair Value on a Nonrecurring Basis (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value measurement, nonrecurring, fair value measurement date is different than period end date [true false] true true
Nonrecurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held for sale $ 2,086 $ 1,128
Loans 1,257 1,467
Equity securities 2,792 4,021
Other assets 98 181
Total assets measured at fair value on a recurring basis 6,233 6,797
Nonrecurring [Member] | Total Commercial [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans 1,161 1,376
Nonrecurring [Member] | Total Consumer [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans 96 91
Nonrecurring [Member] | Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held for sale 1,846 841
Loans 1,257 1,467
Equity securities 1,001 1,451
Other assets 89 172
Total assets measured at fair value on a recurring basis 4,193 3,931
Nonrecurring [Member] | Level 2 [Member] | Total Commercial [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans 1,161 1,376
Nonrecurring [Member] | Level 2 [Member] | Total Consumer [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans 96 91
Nonrecurring [Member] | Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans held for sale 240 287
Loans 0 0
Equity securities 1,791 2,570
Other assets 9 9
Total assets measured at fair value on a recurring basis 2,040 2,866
Nonrecurring [Member] | Level 3 [Member] | Total Commercial [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans 0 0
Nonrecurring [Member] | Level 3 [Member] | Total Consumer [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loans $ 0 $ 0