Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of AOCI (Details)

v3.4.0.3
Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Gains on sales of debt securities $ 226 $ 268
Other income (loss) 418 271
Income (loss) before income taxes 3,699 4,322
Net interest income 9,171 9,411
Personnel (8,852) (9,614)
Income tax expense (benefit) 1,019 1,225
Net income 2,680 3,097
Reclassification out of Accumulated Other Comprehensive Income    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Net income (7) (271)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss) | Debt securities    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Gains on sales of debt securities 226 268
Other income (loss) (7) (70)
Income (loss) before income taxes 219 198
Income tax expense (benefit) 83 75
Net income 136 123
Reclassification out of Accumulated Other Comprehensive Income | Debit Valuation Adjustments    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other income (loss) (7) (335)
Income (loss) before income taxes (7) (335)
Income tax expense (benefit) (3) (127)
Net income (4) (208)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income (loss) before income taxes (198) (256)
Income tax expense (benefit) (74) (96)
Net income (124) (160)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Interest rate contracts    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Net interest income (164) (255)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Equity contracts    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Personnel (34) (1)
Reclassification out of Accumulated Other Comprehensive Income | Employee Benefit Plans    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income (loss) before income taxes (25) (42)
Personnel (25) (42)
Income tax expense (benefit) (10) (16)
Net income $ (15) $ (26)