v3.26.1
Derivatives - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]          
Collateral cash payables $ 243   $ 243   $ 210
Total trading revenues 37 $ 34 83 $ 70  
Hedged amount of foreign currency denominated loans 23   23   19
Additional Derivative Agreements | Derivative Instruments With Adjustable Collateral Posting Thresholds          
Derivative Instruments, Gain (Loss) [Line Items]          
Net fair value of derivative assets with adjustable posting thresholds 3   3   10
Net fair value of derivative liabilities with adjustable posting thresholds 118   118   92
Collateral received 52   52   68
Securities posted collateral 69   69   52
Additional Derivative Agreements | Derivative Instruments With Accelerated Termination Provisions          
Derivative Instruments, Gain (Loss) [Line Items]          
Net fair value of derivative assets with adjustable posting thresholds 3   3   11
Net fair value of derivative liabilities with adjustable posting thresholds 118   118   92
Collateral received 52   52   68
Securities posted collateral 69   69   52
Credit Risk Contract          
Derivative Instruments, Gain (Loss) [Line Items]          
Derivative asset, notional amount 326   326   184
Derivative liability, notional amount 1,100   1,100   1,000
Visa Class B Shares          
Derivative Instruments, Gain (Loss) [Line Items]          
Derivative liabilities related to sale 21   21   25
Derivative valuation adjustment 5   5   25
Derivative Counterparties          
Derivative Instruments, Gain (Loss) [Line Items]          
Collateral cash receivables 312   312   243
Collateral cash payables $ 17   $ 17   $ 20