Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) (Details)

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Accumulated Other Comprehensive Income (Loss) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance, Derivatives     $ (3,785) $ (3,236)
Beginning balance, Employee Benefit Plans     (4,391) (3,947)
Beginning balance, Foreign Currency     (364) [1] (256) [1]
Beginning balance     (5,437) (66)
Net change, after tax, Securities (1,530) (593) (606) (754)
Net change, after tax, Derivatives     301 (66)
Net change, after tax, Employee Benefit Plans     1,031 138
Net change, after tax, Foreign Currency     (1) 33
Net change, after tax, Total 1,496 330 1,937 859
Ending balance, Securities 3,700   3,700  
Ending balance, Derivatives (3,484) (3,302) (3,484) (3,302)
Ending balance, Employee Benefit Plans (3,360) (3,809) (3,360) (3,809)
Ending balance, Foreign Currency (365) [1] (223) [1] (365) [1] (223) [1]
Ending balance (3,500) 793 (3,500) 793
Changes in Accumulated Other Comprehensive Income [Abstract]        
Net change in fair value of accumulated OCI, tax effect, Securities (2,200)      
Net change in fair value recorded in accumulated OCI, before tax, Derivatives     38 (922)
Net change in fair value recorded in accumulated OCI, tax effect, Derivatives     (15) 342
Net change in fair value recorded in accumulated OCI, after tax, Derivatives     23 (580)
Net realized (gains) losses reclassified into earnings, before tax, Derivatives     440 815
Net realized (gains) losses reclassified into earnings, tax effect, Derivatives     (162) (301)
Net realized (gains) losses reclassified into earnings, after tax, Derivatives     278 514
Net change, before tax, Derivatives     478 (107)
Net change, tax effect, Derivatives     (177) 41
Net change, after tax, Derivatives     301 (66)
Net realized (gains) losses reclassified into earnings, before tax, Employee Benefit Plans     254 220
Net realized (gains) losses reclassified into earnings, tax effect, Employee Benefit Plans     (93) (82)
Net realized (gains) losses reclassified into earnings, after tax, Employee Benefit Plans     161 138
Settlements and curtailments, before tax     1,381   
Settlements and curtailments, tax effect     (511)   
Settlements and curtailments, after tax     870   
Net change, before tax, Employee Benefit Plans     1,635 220
Net change, tax effect, Employee Benefit Plans     (604) (82)
Net change, after-tax, Employee Benefit Plans     1,031 138
Net change in fair value recorded in accumulated OCI, before tax, Foreign Currency     (14) (458)
Net change in fair value recorded in accumulated OCI, tax effect, Foreign Currency     (16) 486
Net change in fair value recorded in accumulated OCI, after tax, Foreign Currency     2 28
Net realized (gains) losses reclassified into earnings, before tax, Foreign Currency     (3) 8
Net realized (gains) losses reclassified into earnings, tax effect, Foreign Currency        (3)
Net realized (gains) losses reclassified into earnings, after tax, Foreign Currency     (3) 5
Net change, before tax, Foreign Currency     (17) (450)
Net change, tax effect , Foreign Currency     (16) 483
Net change, after tax, Foreign Currency     (1) 33
Other comprehensive income, before tax     3,004 862
Other comprehensive income, tax effect     (1,067) (3)
Other comprehensive income, net of tax 1,496 330 1,937 859
Available-for-sale Debt Securities [Member]
       
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance, Securities     3,100 714
Net change, after tax, Securities     593 874
Ending balance, Securities 3,693 1,588 3,693 1,588
Changes in Accumulated Other Comprehensive Income [Abstract]        
Net change in fair value recorded in accumulated OCI, before tax, Securities     1,995 2,838
Net change in fair value of accumulated OCI, tax effect, Securities     (705) (1,054)
Net change in fair value recorded in accumulated OCI, after tax, Securities     1,290 1,784
Net realized (gains) losses reclassified into earnings, before tax, Securities     (1,107) (1,445)
Net realized (gains) losses reclassified into earnings, tax effect, Securities     410 535
Net realized (gains) losses reclassified into earnings, after tax, Securities     (697) (910)
Net change, before tax, Securities     888 1,393
Net change, tax effect, Securities     (295) (519)
Net change, after-tax, Securities     593 874
Available-for-sale Marketable Equity Securities [Member]
       
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance, Securities     3 6,659
Net change, after tax, Securities     13 (120)
Ending balance, Securities 16 6,539 16 6,539
Changes in Accumulated Other Comprehensive Income [Abstract]        
Net change in fair value recorded in accumulated OCI, before tax, Securities     22 (163)
Net change in fair value of accumulated OCI, tax effect, Securities     (8) 62
Net change in fair value recorded in accumulated OCI, after tax, Securities     14 (101)
Net realized (gains) losses reclassified into earnings, before tax, Securities     (2) (31)
Net realized (gains) losses reclassified into earnings, tax effect, Securities     1 12
Net realized (gains) losses reclassified into earnings, after tax, Securities     (1) (19)
Net change, before tax, Securities     20 (194)
Net change, tax effect, Securities     (7) 74
Net change, after-tax, Securities     $ 13 $ (120)
[1] Net change in fair value represents only the impact of changes in spot foreign exchange rates on the Corporation’s net investment in non-U.S. operations and related hedges.