Quarterly report pursuant to Section 13 or 15(d)

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

v3.2.0.727
Activity in Accumulated Other Comprehensive Income (Loss) (Phantoms) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated Other Comprehensive Income (Loss), Net of Tax $ (3,727) $ (596) $ (3,727) $ (596) $ (3,594)  
Change in foreign currency translation adjustment, net of tax 101 39 (203) 3    
Foreign currency translation gain (loss):            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated Other Comprehensive Income (Loss), Net of Tax (660) (123) (660) (123) (457) $ (126)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, Net of Tax     0 0    
Change in foreign currency translation adjustment, net of tax     (203) 3    
Aggregate adjustment for the period, tax     0 3    
Unrealized gain (loss) on marketable securities, net of tax:            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated Other Comprehensive Income (Loss), Net of Tax 1 1 1 1 0 (1)
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax     0 0    
Current period changes in fair value, tax effect     0 1    
Reclassification to earnings, tax effect     0 0    
Unrealized gain (loss) on cash flow hedges, net of tax:            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated Other Comprehensive Income (Loss), Net of Tax 78 (260) 78 (260) 61 (219)
Current period changes in fair value, tax effect     56 (27)    
Reclassification to earnings, tax effect     45 1    
Accumulated Defined Benefit Plans Adjustment [Member]            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated Other Comprehensive Income (Loss), Net of Tax $ (3,146) $ (214) (3,146) (214) $ (3,198) $ (114)
Reclassification to earnings, tax effect     35 430    
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Tax     $ 0 $ (488)