Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Changes in OCI Components Pre- and After-tax (Details)

v3.19.1
Accumulated Other Comprehensive Income (Loss) - Changes in OCI Components Pre- and After-tax (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
After- tax    
Comprehensive income $ 9,480 $ 2,935
Total other comprehensive income (loss)    
Pretax    
Net change 2,926 (5,407)
Tax effect    
Net change (757) 1,424
After- tax    
Comprehensive income 2,169 (3,983)
Debt and Equity Securities    
Pretax    
Net increase (decrease) in fair value 3,075 (5,323)
Net realized (gains) losses reclassified into earnings (4) (2)
Net change 3,071 (5,325)
Tax effect    
Net increase (decrease) in fair value (763) 1,360
Net realized (gains) losses reclassified into earnings 1 2
Net change (762) 1,362
After- tax    
Other comprehensive income (loss) before reclassification, net of tax 2,312 (3,963)
Net realized (gains) losses reclassified into earnings (3) 0
Comprehensive income 2,309 (3,963)
Debit Valuation Adjustments    
Pretax    
Net increase (decrease) in fair value (475) 342
Net realized (gains) losses reclassified into earnings 3 17
Net change (472) 359
Tax effect    
Net increase (decrease) in fair value 110 (82)
Net realized (gains) losses reclassified into earnings (1) (4)
Net change 109 (86)
After- tax    
Other comprehensive income (loss) before reclassification, net of tax (365) 260
Net realized (gains) losses reclassified into earnings 2 13
Comprehensive income (363) 273
Derivatives    
Pretax    
Net increase (decrease) in fair value 264 (424)
Net realized (gains) losses reclassified into earnings 23 23
Net change 287 (401)
Tax effect    
Net increase (decrease) in fair value (52) 131
Net realized (gains) losses reclassified into earnings (6) (5)
Net change (58) 126
After- tax    
Other comprehensive income (loss) before reclassification, net of tax 212 (293)
Net realized (gains) losses reclassified into earnings 17 18
Comprehensive income 229 (275)
Derivatives | Net interest income    
Pretax    
Net realized (gains) losses reclassified into earnings 23 50
Tax effect    
Net realized (gains) losses reclassified into earnings (6) (12)
After- tax    
Net realized (gains) losses reclassified into earnings 17 38
Derivatives | Compensation and benefits expense    
Pretax    
Net realized (gains) losses reclassified into earnings 0 (27)
Tax effect    
Net realized (gains) losses reclassified into earnings 0 7
After- tax    
Net realized (gains) losses reclassified into earnings 0 (20)
Employee Benefit Plans    
Pretax    
Net realized (gains) losses reclassified into earnings 35 41
Net change 35 41
Tax effect    
Net realized (gains) losses reclassified into earnings (7) (11)
Net change (7) (11)
After- tax    
Net realized (gains) losses reclassified into earnings 28 30
Comprehensive income 28 30
Foreign Currency    
Pretax    
Net increase (decrease) in fair value 5 (81)
Net change 5 (81)
Tax effect    
Net increase (decrease) in fair value (39) 33
Net change (39) 33
After- tax    
Other comprehensive income (loss) before reclassification, net of tax (34) (48)
Comprehensive income $ (34) $ (48)