Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Activity in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     $ (4,867)  
Translation adjustment (net of tax effect of $(9) and $(14)) $ (78) $ 24 (84) $ 54
Current period changes in fair value (net of tax effect of $(1) and $0) 0 1 (3) 1
Current period changes in fair value (net of tax effect of $(33) and $(17)) 332 (151) 266 (192)
Balance at end of period (5,346) (4,202) (5,346) (4,202)
Foreign currency translation gain (loss):        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     (930) (1,016)
Translation adjustment (net of tax effect of $(9) and $(14))     (84) 54
Balance at end of period (1,061) (962) (1,061) (962)
Unrealized gain (loss) on marketable securities, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     (2) (1)
Current period changes in fair value (net of tax effect of $(1) and $0)     (4) 1
Balance at end of period (5) 0 (5) 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax     1 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax     (1) 0
Unrealized gain (loss) on cash flow hedges, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     (366) (45)
Current period changes in fair value (net of tax effect of $(33) and $(17))     210 (181)
Reclassification to earnings (net of tax effect of $12 and $(7))     56 (11)
Balance at end of period (179) (237) (179) (237)
Reclassification to earnings, tax effect     18 (7)
Accumulated Defined Benefit Plans Adjustment [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     (3,569) (3,421)
Remeasurement of plan assets and liabilities (net of tax effect of $0 and $214) (1)     0 355
Reclassification to earnings (net of tax effect of $12 and $18)     77 63
Balance at end of period (4,101) (3,003) (4,101) (3,003)
Income Tax Expense Benefit [Member] | Unrealized gain (loss) on marketable securities, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax 0   1 0
Income Tax Expense Benefit [Member] | Unrealized gain (loss) on cash flow hedges, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Reclassification to earnings, tax effect 6 0 18 (7)
Income Tax Expense Benefit [Member] | Accumulated Defined Benefit Plans Adjustment [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax 12 19 24 37
Net Income [Member] [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
TotalOtherComprehensiveIncomeReclassification, Net of Tax (58) (31) (134) (52)
Net Income [Member] [Member] | Unrealized gain (loss) on marketable securities, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 0   (1) 0
Net Income [Member] [Member] | Unrealized gain (loss) on cash flow hedges, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Reclassification to earnings (net of tax effect of $12 and $(7)) 20 0 56 (11)
Net Income [Member] [Member] | Accumulated Defined Benefit Plans Adjustment [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Reclassification to earnings (net of tax effect of $12 and $18) (38) (31) (77) (63)
Labor and Related Expense [Member] | Accumulated Defined Benefit Plans Adjustment [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax (50) (50) (101) (100)
Foreign exchange contracts | Interest Expense | Unrealized gain (loss) on cash flow hedges, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax (20) 7 (62) 32
Interest rate contracts | Interest Expense | Unrealized gain (loss) on cash flow hedges, net of tax:        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax $ (6) $ (7) $ (12) $ (14)