| 
 (in millions)   | 
Changes in Net Unrealized Gains on Investment Securities Having No Credit Losses Recognized in the Consolidated Statement of Income  | 
Changes in Net Unrealized Gains on Investment Securities Having Credit Losses Recognized in the Consolidated Statement of Income  | 
Net Benefit Plan Assets and Obligations Recognized in Shareholders' Equity  | 
Net Unrealized Foreign Currency Translation  | 
Total Accumulated Other Comprehensive Income  | 
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
 Balance, December 31, 2010  | 
$ | 1,719 | $ | 140 | $ | (610 | ) | $ | 6 | $ | 1,255 | |||||
| 
 Other comprehensive income (OCI) before reclassifications  | 
1,091 | (8 | ) | (251 | ) | (61 | ) | 771 | ||||||||
| 
 Amounts reclassified from AOCI  | 
(81 | ) | 10 | 50 | — | (21 | ) | |||||||||
| 
 Net OCI, current period  | 
1,010 | 2 | (201 | ) | (61 | ) | 750 | |||||||||
| 
 Balance, December 31, 2011  | 
2,729 | 142 | (811 | ) | (55 | ) | 2,005 | |||||||||
| 
 OCI before reclassifications  | 
228 | 48 | (104 | ) | 45 | 217 | ||||||||||
| 
 Amounts reclassified from AOCI  | 
(49 | ) | 5 | 58 | — | 14 | ||||||||||
| 
 Net OCI, current period  | 
179 | 53 | (46 | ) | 45 | 231 | ||||||||||
| 
 Balance, December 31, 2012  | 
2,908 | 195 | (857 | ) | (10 | ) | 2,236 | |||||||||
| 
 OCI before reclassifications  | 
(1,740 | ) | (2 | ) | 358 | (79 | ) | (1,463 | ) | |||||||
| 
 Amounts reclassified from AOCI  | 
(43 | ) | 4 | 68 | 8 | 37 | ||||||||||
| 
 Net OCI, current period  | 
(1,783 | ) | 2 | 426 | (71 | ) | (1,426 | ) | ||||||||
| 
 Balance, December 31, 2013  | 
$ | 1,125 | $ | 197 | $ | (431 | ) | $ | (81 | ) | $ | 810 | ||||