Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gains on sales of debt securities $ 51 $ 437 $ 490 $ 886
Other loss 628 601 1,691 1,312
Net interest income 10,201 9,900 30,804 29,272
Personnel (7,704) (7,829) (24,278) (25,333)
Income before income taxes 7,304 6,247 19,098 17,308
Income tax expense (benefit) 2,349 1,628 5,888 4,756
Net income $ 4,955 $ 4,619 13,210 12,552
Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net income     (73) (360)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Investment Gain (Loss) Attributable to Parent | Debt securities        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gains on sales of debt securities     490 886
Other loss     (14) (77)
Income before income taxes     476 809
Income tax expense (benefit)     181 307
Net income     295 502
Reclassification out of Accumulated Other Comprehensive Income | Debit Valuation Adjustments        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other loss     (18) (545)
Income before income taxes     (18) (545)
Income tax expense (benefit)     (7) (206)
Net income     (11) (339)
Reclassification out of Accumulated Other Comprehensive Income | Derivatives        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes     (508) (711)
Income tax expense (benefit)     (190) (267)
Net income     (318) (444)
Reclassification out of Accumulated Other Comprehensive Income | Derivatives | Interest rate contracts        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net interest income     (447) (768)
Reclassification out of Accumulated Other Comprehensive Income | Derivatives | Equity contracts        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Personnel     (61) 57
Reclassification out of Accumulated Other Comprehensive Income | Employee Benefit Plans        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Personnel     (64) (128)
Income before income taxes     (64) (128)
Income tax expense (benefit)     (25) (49)
Net income     $ (39) $ (79)