v3.26.1
Accumulated Other Comprehensive Loss - Schedule of Reclassification Out of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive income (loss), before tax $ 84 $ 56 $ 101 $ 924
Other comprehensive income (loss), tax effect (22) (13) (26) (219)
Other comprehensive income (loss), net of tax 62 43 75 705
Available-for-sale securities        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net unrealized losses arising during the period, before tax   26 55 372
Net unrealized losses arising during the period, tax   (7) (14) (88)
Net unrealized losses arising during the period, net of tax   19 41 284
Reclassification from AOCI, before tax   2 3 (493)
Reclassification from AOCI, tax   (1) (1) 117
Reclassification from AOCI, net of tax   1 2 (376)
Other comprehensive income (loss), before tax 59 24 52 865
Other comprehensive income (loss), tax effect (15) (6) (13) (205)
Other comprehensive income (loss), net of tax 44 18 39 660
Held-to-maturity securities        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification from AOCI, before tax (21) (22) (40) (42)
Reclassification from AOCI, tax 6 5 11 10
Reclassification from AOCI, net of tax (15) (17) (29) (32)
Other comprehensive income (loss), net of tax 15 17 29 32
Translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive income (loss), before tax (4) 12 (7) 12
Other comprehensive income (loss), tax effect 1 (3) 2 (3)
Other comprehensive income (loss), net of tax (3) 9 (5) 9
Net investment hedges        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive income (loss), before tax 4 (9) 7 (9)
Other comprehensive income (loss), tax effect (1) 2 (2) 2
Other comprehensive income (loss), net of tax 3 (7) 5 (7)
Cash flow hedges        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net unrealized losses arising during the period, before tax   (1)   (1)
Net unrealized losses arising during the period, tax   0   0
Net unrealized losses arising during the period, net of tax   (1)   (1)
Reclassification from AOCI, before tax (4) (8) (9) (15)
Reclassification from AOCI, tax 1 1 2 3
Reclassification from AOCI, net of tax (3) (7) (7) (12)
Other comprehensive income (loss), before tax 4 7 9 14
Other comprehensive income (loss), tax effect (1) (1) (2) (3)
Other comprehensive income (loss), net of tax $ 3 $ 6 $ 7 $ 11