Quarterly report [Sections 13 or 15(d)]

OTHER COMPREHENSIVE INCOME - AOCI Roll Forward (Details)

v3.25.1
OTHER COMPREHENSIVE INCOME - AOCI Roll Forward (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance, beginning of period $ 19,740  
Other comprehensive income before reclassifications 409 $ (256)
Net unrealized gains on net investment hedges 24 53
Other comprehensive income (loss), net of tax 433 (203)
Balance, end of period 20,434  
Reclassification out of Accumulated Other Comprehensive Income    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Debt securities transferred from available-for-sale 49 56
Unrealized gains (losses) on available-for-sale securities, net of hedges    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance, beginning of period (2,365) (2,094)
Other comprehensive income before reclassifications 253 (130)
Net unrealized gains on net investment hedges 2 2
Other comprehensive income (loss), net of tax 255 (128)
Balance, end of period (2,110) (2,222)
Net change related to cash flow hedges on loans    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance, beginning of period (267) (363)
Other comprehensive income before reclassifications 155 (124)
Net unrealized gains on net investment hedges 22 51
Other comprehensive income (loss), net of tax 177 (73)
Balance, end of period (90) (436)
Translation adjustments, net of hedges    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance, beginning of period (12) (6)
Other comprehensive income before reclassifications 1 (2)
Net unrealized gains on net investment hedges 0 0
Other comprehensive income (loss), net of tax 1 (2)
Balance, end of period (11) (8)
Unrealized losses for pension and other post-retirement obligations    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance, beginning of period (222) (213)
Other comprehensive income before reclassifications 0 0
Net unrealized gains on net investment hedges 0 0
Other comprehensive income (loss), net of tax 0 0
Balance, end of period (222) (213)
AOCI    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance, beginning of period (2,866) (2,676)
Balance, end of period $ (2,433) $ (2,879)