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Statement of Shareholders' Equity (USD $) In Millions, unless otherwise specified | Total | Previously Reported Balance [Member] | Adjustments To Previously Reported Balance [Member] | Preferred Shares | Common Shares | Additional Paid-in Capital | Accumulated other comprehensive income (loss) | Accumulated other comprehensive income (loss) Previously Reported Balance [Member] | Accumulated other comprehensive income (loss) Adjustments To Previously Reported Balance [Member] | Retained Earnings | Retained Earnings Previously Reported Balance [Member] | Retained Earnings Adjustments To Previously Reported Balance [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2008 | $ 11,841 |  |  | $ 0 | $ 232 | $ 10,496 | $ (1,606) |  |  | $ 2,719 |  |
Comprehensive income |  |  |  |  |  |  |  |  |  |  |  |
Net income | 2,130 |  |  |  |  |  |  |  |  | 2,130 |  |
Change in net unrealized securities gains | 1,206 |  |  |  |  |  | 1,206 |  |  |  |  |
Change in net unrealized derivative (losses) gains | 52 |  |  |  |  |  | 52 |  |  |  |  |
Foreign currency translation adjustments | (354) |  |  |  |  |  | (354) |  |  |  |  |
Change in net unrealized pension and other postretirement benefit losses | (10) |  |  |  |  |  | (10) |  |  |  |  |
Total comprehensive income | 3,024 |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred shares and common stock warrants | 3,389 |  |  | 3,157 |  | 232 |  |  |  |  |  |
Preferred share accretion | 0 |  |  | 232 |  |  |  |  |  | (232) |  |
Repurchase of American Express Series A preferred shares | (3,389) |  |  | (3,389) |  |  |  |  |  |  |  |
Repurchase of American Express stock warrants | (340) |  |  |  |  | (232) |  |  |  | (108) |  |
Issuance of common shares | 531 |  |  |  | 4 | 527 |  |  |  |  |  |
Other changes, primarily employee plans | 279 |  |  |  | 1 | 121 |  |  |  | 157 |  |
Cash divididends declared |  |  |  |  |  |  |  |  |  |  |  |
Preferred shares | (74) |  |  |  |  |  |  |  |  | (74) |  |
Common shares | (855) |  |  |  |  |  |  |  |  | (855) |  |
Ending Balance at Dec. 31, 2009 | 12,637 | 14,406 | (1,769) | 0 | 237 | 11,144 | (1,027) | (712) | (315) | 2,283 | 3,737 | (1,454)
Comprehensive income |  |  |  |  |  |  |  |  |  |  |  |
Net income | 4,057 |  |  |  |  |  |  |  |  | 4,057 |  |
Change in net unrealized securities gains | (135) |  |  |  |  |  | (135) |  |  |  |  |
Change in net unrealized derivative (losses) gains | 21 |  |  |  |  |  | 21 |  |  |  |  |
Foreign currency translation adjustments | 219 |  |  |  |  |  | 219 |  |  |  |  |
Change in net unrealized pension and other postretirement benefit losses | 5 |  |  |  |  |  | 5 |  |  |  |  |
Total comprehensive income | 4,167 |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred shares and common stock warrants | 0 |  |  |  |  |  |  |  |  |  |  |
Repurchase of American Express Series A preferred shares | 0 |  |  |  |  |  |  |  |  |  |  |
Repurchase of American Express stock warrants | 0 |  |  |  |  |  |  |  |  |  |  |
Repurchase of common shares | 590 |  |  |  | 3 | 132 |  |  |  | 455 |  |
Other changes, primarily employee plans | 883 |  |  |  | 4 | 925 |  |  |  | (46) |  |
Cash divididends declared |  |  |  |  |  |  |  |  |  |  |  |
Common shares | 867 |  |  |  |  |  |  |  |  | 867 |  |
Ending Balance at Dec. 31, 2010 | 16,230 |  |  | 0 | 238 | 11,937 | (917) |  |  | 4,972 |  |
Comprehensive income |  |  |  |  |  |  |  |  |  |  |  |
Net income | 4,935 |  |  |  |  |  |  |  |  | 4,935 |  |
Change in net unrealized securities gains | 231 |  |  |  |  |  | 231 |  |  |  |  |
Change in net unrealized derivative (losses) gains | 6 |  |  |  |  |  | 6 |  |  |  |  |
Foreign currency translation adjustments | (179) |  |  |  |  |  | (179) |  |  |  |  |
Change in net unrealized pension and other postretirement benefit losses | (17) |  |  |  |  |  | (17) |  |  |  |  |
Total comprehensive income | 4,976 |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred shares and common stock warrants | 0 |  |  |  |  |  |  |  |  |  |  |
Repurchase of American Express Series A preferred shares | 0 |  |  |  |  |  |  |  |  |  |  |
Repurchase of American Express stock warrants | 0 |  |  |  |  |  |  |  |  |  |  |
Repurchase of common shares | (2,300) |  |  |  | (10) | (494) |  |  |  | (1,796) |  |
Other changes, primarily employee plans | 744 |  |  |  | 4 | 774 |  |  |  | (34) |  |
Cash divididends declared |  |  |  |  |  |  |  |  |  |  |  |
Common shares | 856 |  |  |  |  |  |  |  |  | 856 |  |
Ending Balance at Dec. 31, 2011 | $ 18,794 |  |  | $ 0 | $ 232 | $ 12,217 | $ (876) |  |  | $ 7,221 |  |

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