Annual report pursuant to Section 13 and 15(d)

Accumulated Other Income (Loss) (Details)

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Accumulated Other Income (Loss) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]      
Net change, Available-for-Sale Securities $ (1,802) $ 4,270 $ (5,759)
Ending Balance, Securities 4,400    
Beginning Balance, Derivatives (3,785) (3,236) (2,535)
Net change, Derivatives 916 (549) (701)
Ending Balance, Derivatives (2,869) (3,785) (3,236)
Beginning Balance, Employee Benefit Plans (4,391) [1] (3,947) [1] (4,092) [1]
Net change, Employee Benefit Plans (65) [1] (444) [1] 145 [1]
Ending Balance, Employee Benefit Plans (4,456) [1] (4,391) [1] (3,947) [1]
Beginning Balance, Foreign Currency (364) [2] (256) [2] (493) [2]
Net Change, Foreign Currency (13) [2] (108) [2] 237 [2]
Ending Balance, Foreign Currency (377) [2] (364) [2] (256) [2]
Beginning Balance, Total (5,437) (66) (5,619)
Net change, Total 2,640 (5,371) 5,553
Ending Balance, Total (2,797) (5,437) (66)
Available For Sale Debt and Marketable Equity Securities [Abstract]      
Net change in fair value recorded in accumulated OCI, Tax effect (2,600)    
Net change, After-tax (1,802) 4,270 (5,872)
Derivatives [Abstract]      
Net change in fair value recorded in accumulated OCI, Before-tax 430 (2,490) (1,755)
Net change in fair value recorded in accumulated OCI, Tax effect (166) 923 647
Net change in fair value recorded in accumulated OCI, After-tax 264 (1,567) (1,108)
Net realized (gains) losses reclassified into earnings, Before tax 1,035 1,617 644
Net realized (gains) losses reclassified into earnings, Tax effect (383) (599) (237)
Net realized (gains) losses reclassified into earnings, After-tax 652 1,018 407
Net change, Before-tax 1,465 (873) (1,111)
Net change, Tax effect (549) 324 410
Employee Benefit Plans [Abstract]      
Net change in fair value recorded in accumulated OCI, Before-tax (1,891) (1,171) (162)
Net change in fair value recorded in accumulated OCI, Tax effect 660 457 58
Net change in fair value recorded in accumulated OCI, After-tax (1,231) (714) (104)
Net realized (gains) losses reclassified into earnings, Before-tax 490 437 396
Net realized (gains) losses reclassified into earnings, Tax effect (192) (167) (147)
Net realized (gains) losses reclassified into earnings, After-tax 298 270 249
Settlements and curtailments, Before-tax 1,378 0 0
Settlements and curtailments, Tax effect (510) 0 0
Settlements and curtailments, After-tax 868 0 0
Net change, Before-tax (23) (734) 234
Net change, Tax effect (42) 290 (89)
Foreign Currency [Abstract]      
Net change in fair value recorded in accumulated OCI, Before-tax (226) 145 (204)
Net change in fair value recorded in accumulated OCI, Tax effect 233 (179) 160
Net change in fair value recorded in accumulated OCI, After-tax 7 (34) (44)
Net realized (gains) losses reclassified into earnings, Before-tax (30) (65) 446
Net realized (gains) losses reclassified into earnings, Tax effect 10 (9) (165)
Net realized (gains) losses reclassified into earnings, After-tax (20) (74) 281
Net change, Before-tax (256) 80 242
Net change, Tax effect 243 (188) (5)
Other Comprehensive Income (Loss), before Tax 3,982 (8,304) 8,769
Other Comprehensive Income (Loss), Tax (1,342) 2,933 (3,216)
Other Comprehensive Income (Loss), Net of Tax 2,640 (5,371) 5,553
Debt [Member]
     
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]      
Beginning Balance, Securities 3,100 714 (628)
Net change, Available-for-Sale Securities 1,343 2,386 1,342
Ending Balance, Securities 4,443 3,100 714
Available For Sale Debt and Marketable Equity Securities [Abstract]      
Net change in fair value recorded in accumulated OCI, Before-tax 3,676 6,925 3,541
Net change in fair value recorded in accumulated OCI, Tax effect (1,319) (2,594) (1,331)
Net change in fair value recorded in accumulated OCI, After-tax 2,357 4,331 2,210
Net realized (gains) losses reclassified inter earnings, Before-tax (1,609) (3,087) (1,557)
Net realized (gains) losses reclassified into earnings, Tax effect 595 1,142 576
Net realized (gains) losses reclassified into earnings, After-tax (1,014) (1,945) (981)
Net change, Before-tax 2,067 3,838 2,164
Net change, Tax effect (724) (1,452) (822)
Net change, After-tax 1,343 2,386 1,342
Equity [Member]
     
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]      
Beginning Balance, Securities 3 6,659 2,129
Net change, Available-for-Sale Securities 459 (6,656) 4,530
Ending Balance, Securities 462 3 6,659
Available For Sale Debt and Marketable Equity Securities [Abstract]      
Net change in fair value recorded in accumulated OCI, Before-tax 748 (4,114) 9,029
Net change in fair value recorded in accumulated OCI, Tax effect (277) 1,575 (3,372)
Net change in fair value recorded in accumulated OCI, After-tax 471 (2,539) 5,657
Net realized (gains) losses reclassified inter earnings, Before-tax (19) (6,501) (1,789)
Net realized (gains) losses reclassified into earnings, Tax effect 7 2,384 662
Net realized (gains) losses reclassified into earnings, After-tax (12) (4,117) (1,127)
Net change, Before-tax 729 (10,615) 7,240
Net change, Tax effect (270) 3,959 (2,710)
Net change, After-tax 459 (6,656) 4,530
Cumulative-Effect Adjustment, Consolidation of Variable Interest Entity [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
     
Available For Sale Debt and Marketable Equity Securities [Abstract]      
Cumulative adjustments for accounting changes, Before-tax 0 0 (184)
Cumulative adjustments for accounting changes, Tax effect 0 0 68
Cumulative adjustments for accounting changes, After-tax 0 0 (116)
Credit-related notes [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
     
Available For Sale Debt and Marketable Equity Securities [Abstract]      
Cumulative adjustments for accounting changes, Before-tax 0 0 364
Cumulative adjustments for accounting changes, Tax effect 0 0 (135)
Cumulative adjustments for accounting changes, After-tax $ 0 $ 0 $ 229
[1] Net change in fair value represents after-tax adjustments based on the final year-end actuarial valuations. For more information on employee benefit plans, see Note 18 – Employee Benefit Plans.
[2] Net change in fair value represents the impact of changes in spot foreign exchange rates on the Corporation’s net investment in non-U.S. operations, and related hedges.