Quarterly report pursuant to Section 13 or 15(d)

SHAREOWNERS' EQUITY Amounts Reclassified from AOCI (Detail)

v3.19.3
SHAREOWNERS' EQUITY Amounts Reclassified from AOCI (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Net Income [Member] [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
TotalOtherComprehensiveIncomeReclassification, Net of Tax $ 7 $ (44) $ (39) $ (178)
Accumulated Net Unrealized Investment Gain (Loss) [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax 1 0 1 1
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax (5) 1 5 (2)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Income Tax Expense Benefit [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax (1) 0 (1) 1
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Net Income [Member] [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 5 (1) 5 (2)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Investment income and other        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax 6 (1) 6 (3)
Unrealized gain (loss) on cash flow hedges, net of tax:        
AmountsReclassifiedFromAOCI [Line Items]        
Reclassification to earnings, tax effect (14) 1 27 19
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax (45) 5 85 (61)
Unrealized gain (loss) on cash flow hedges, net of tax: | Income Tax Expense Benefit [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Reclassification to earnings, tax effect (14) 1 (27) 19
Unrealized gain (loss) on cash flow hedges, net of tax: | Net Income [Member] [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax 45 (5) 85 (61)
Unrealized gain (loss) on cash flow hedges, net of tax: | Interest rate contracts | Interest Expense        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax (3) (6) (12) (18)
Unrealized gain (loss) on cash flow hedges, net of tax: | Foreign exchange contracts | Interest Expense        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax 62 0 124 (62)
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     0 (609)
Accumulated Defined Benefit Plans Adjustment [Member] | Labor and Related Expense [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax (57) (50) (170) (151)
Accumulated Defined Benefit Plans Adjustment [Member] | Income Tax Expense Benefit [Member]        
AmountsReclassifiedFromAOCI [Line Items]        
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax 14 12 41 36
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 $ (43) $ (38) $ (129) $ (115)