Quarterly report pursuant to Section 13 or 15(d)

Activity in Accumulated Other Comprehensive Income (Loss) (Detail)

v3.3.0.814
Activity in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     $ (3,594)  
Aggregate adjustment for the period (net of tax effect of $0 and $(9)) $ (141) $ (251) (344) $ (248)
Current period changes in fair value (net of tax effect of $0, and $2) 0 (1) 1 1
Current period changes in fair value (net of tax effect of $(25) and $(32)) (11) 210 6 169
Balance at end of period (3,851) (611) (3,851) (611)
Foreign currency translation gain (loss):        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     (457) (126)
Aggregate adjustment for the period (net of tax effect of $0 and $(9))     (344) (248)
Balance at end of period (801) (374) (801) (374)
Unrealized gain (loss) on marketable securities, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     0 (1)
Current period changes in fair value (net of tax effect of $0, and $2)     1 1
Reclassification to earnings (net of tax effect of $(1) and $(4))     0 0
Balance at end of period 1 0 1 0
Unrealized gain (loss) on cash flow hedges, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     61 (219)
Current period changes in fair value (net of tax effect of $(25) and $(32))     119 129
Reclassification to earnings (net of tax effect of $0 and $(6))     (113) 40
Balance at end of period 67 (50) 67 (50)
Accumulated Defined Benefit Plans Adjustment [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     (3,198) (114)
Reclassification to earnings (net of tax effect of $16 and $28)     80 742
Balance at end of period $ (3,118) $ (187) (3,118) (187)
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax     $ 0 $ (815)