v2.4.0.8
Parent Company (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Non-interest revenues                      
Gain on sale of securities                 $ 136 $ 126 $ 16
Other                 2,274 2,425 2,164
Total non-interest revenues                 (27,927) (26,927) (25,586)
Interest income                 7,005 6,854 6,696
Interest expense                 (1,958) (2,226) (2,320)
Total revenues net of interest expense (8,547) (8,301) (8,245) (7,881) (8,141) (7,862) (7,965) (7,587) (32,974) (31,555) (29,962)
Expenses                      
Salaries and employee benefits                 6,191 6,597 6,252
Other                 6,518 6,573 5,712
Total                 (22,976) (23,114) (21,894)
Pretax loss 1,980 2,004 1,995 1,909 929 1,870 1,879 1,773 7,888 6,451 6,956
Income tax provision (benefit)                 (2,529) (1,969) (2,057)
Income from continuing operations                 5,359 4,482 4,899
Income from discontinued operations                 0 0 36
Net income 1,308 1,366 1,405 1,280 637 1,250 1,339 1,256 5,359 4,482 4,935
Parent Company [Member]
                      
Non-interest revenues                      
Gain on sale of securities                 135 121 15
Other                 5 (12) 3
Total non-interest revenues                 140 109 18
Interest income                 134 137 142
Interest expense                 (583) (609) (633)
Total revenues net of interest expense                 (309) (363) (473)
Expenses                      
Salaries and employee benefits                 206 165 173
Other                 261 214 186
Total                 467 379 359
Pretax loss                 (776) (742) (832)
Income tax provision (benefit)                 (297) (258) (346)
Net loss before equity in net income of subsidiaries and affiliates                 (479) (484) (486)
Equity in net income of subsidiaries and affiliates                 5,838 4,966 5,385
Income from continuing operations                 5,359 4,482 4,899
Income from discontinued operations                 0 0 36
Net income                 $ 5,359 $ 4,482 $ 4,935