Annual report pursuant to Section 13 and 15(d)

SHAREOWNERS' EQUITY - Activity in Accumulated Other Comprehensive Income (Loss) (Detail)

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SHAREOWNERS' EQUITY - Activity in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of year $ (4,867) $ (4,483)  
Translation adjustment (net of tax effect of $xxx, $(161) and $32) (149) 86 $ (119)
Current period changes in fair value (net of tax effect of $xxx, $(1) and $0 0 (1) 0
Current period changes in fair value (net of tax effect of $xxx, $(190) and $75) 485 (321) (112)
Balance at end of period (4,994) (4,867) (4,483)
Foreign currency translation gain (loss)      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of year (930) (1,016) (897)
Translation adjustment (net of tax effect of $xxx, $(161) and $32) (47) 0 0
Reclassification to earnings (net of tax effect of $xxx, $1 and $0) (149) 86 (119)
Balance at end of period (1,126) (930) (1,016)
Unrealized gain (loss) on marketable securities, net of tax      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of year (2) (1) (1)
Current period changes in fair value (net of tax effect of $xxx, $(1) and $0 (3) (2) 0
Reclassification to earnings (net of tax effect of $xxx, $1 and $0) 3 1 0
Balance at end of period (2) (2) (1)
Unrealized gain (loss) on cash flow hedges, net of tax      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of year (366) (45) 67
Current period changes in fair value (net of tax effect of $xxx, $(190) and $75) 429 (316) 124
Reclassification to earnings (net of tax effect of $xxx, $(3) and $(142)) 56 (5) (236)
Cumulative Effect of New Accounting Principle in Period of Adoption (79) 0 0
Balance at end of period 40 (366) (45)
Unrecognized pension and postretirement benefit costs, net of tax      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of year (3,569) (3,421) (2,709)
Reclassification to earnings (net of tax effect of $xxx, $269 and $1,040) 1,389 731 1,783
Cumulative Effect of New Accounting Principle in Period of Adoption (609) 0 0
Net actuarial gain (loss) and prior service cost resulting from remeasurements of plan assets and liabilities (net of tax effect of $xxx, $(180) and $(1,460)) (1,117) (879) (2,495)
Balance at end of period (3,906) (3,569) (3,421)
Net Income [Member] [Member] | Unrealized gain (loss) on marketable securities, net of tax      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Reclassification to earnings (net of tax effect of $xxx, $1 and $0) (3) (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 $xxx, $(3) and $(142)) 56 (5) (236)
Net Income [Member] [Member] | Unrecognized pension and postretirement benefit costs, net of tax      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Reclassification to earnings (net of tax effect of $xxx, $269 and $1,040) $ (1,389) $ (731) $ (1,783)