Quarterly report pursuant to Section 13 or 15(d)

SHAREOWNERS' EQUITY Amounts Reclassified from AOCI (Detail)

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SHAREOWNERS' EQUITY Amounts Reclassified from AOCI (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Net Income [Member] [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
TotalOtherComprehensiveIncomeReclassification, Net of Tax $ (31) $ 23 $ (52) $ 59
Accumulated Net Unrealized Investment Gain (Loss) [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax     0 0
Unrealized gain (loss) on cash flow hedges, net of tax:        
AmountsReclassifiedFromAOCI [Line Items]        
Reclassification to earnings, tax effect     (7) (67)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax     11 112
Unrealized gain (loss) on cash flow hedges, net of tax: | Income Tax Expense Benefit [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Reclassification to earnings, tax effect 0 (29) (7) (67)
Unrealized gain (loss) on cash flow hedges, net of tax: | Net Income [Member] [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax 0 50 11 112
Unrealized gain (loss) on cash flow hedges, net of tax: | Interest Rate Contract [Member] | Interest Expense [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax (7) (6) (14) (12)
Unrealized gain (loss) on cash flow hedges, net of tax: | Foreign Exchange Contract [Member] | Revenue [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax 7 85 32 191
Accumulated Defined Benefit Plans Adjustment [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax     63 53
Accumulated Defined Benefit Plans Adjustment [Member] | Labor and Related Expense [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax (50) (43) (100) (86)
Accumulated Defined Benefit Plans Adjustment [Member] | Income Tax Expense Benefit [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax 19 16 37 33
Accumulated Defined Benefit Plans Adjustment [Member] | Net Income [Member] [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax $ (31) $ (27) $ (63) $ (53)