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SHAREOWNERS' EQUITY - Gains (Losses) Reclassified from AOCI (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Net income |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
TotalOtherComprehensiveIncomeReclassification, Net of Tax | $ 36 | $ 2,488
Interest rate contracts | Investment income and other |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | 0 | 0
Interest rate contracts | Interest expense |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | (3) | (2)
Interest rate contracts | Revenue |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | 0 | 0
Foreign currency exchange contracts | Investment income and other |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | 0 | 0
Foreign currency exchange contracts | Interest expense |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | 0 | 0
Foreign currency exchange contracts | Revenue |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | 41 | 15
Accumulated Net Unrealized Investment Gain (Loss) |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Reclassification to earnings, tax effect | 0 | 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | 0 | 3
Accumulated Net Unrealized Investment Gain (Loss) | Income tax expense |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Reclassification to earnings, tax effect | 0 | 0
Accumulated Net Unrealized Investment Gain (Loss) | Net income |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | 0 | 3
Accumulated Net Unrealized Investment Gain (Loss) | Investment income and other |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax | 0 | 3
Unrealized gain (loss) on cash flow hedges, net of tax: |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Reclassification to earnings, tax effect | (9) | (3)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax | 29 | 10
Unrealized gain (loss) on cash flow hedges, net of tax: | Income tax expense |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Reclassification to earnings, tax effect | (9) | (3)
Unrealized gain (loss) on cash flow hedges, net of tax: | Net income |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax | 29 | 10
Unrealized gain (loss) on cash flow hedges, net of tax: | Interest rate contracts | Interest expense |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | (3) | (2)
Unrealized gain (loss) on cash flow hedges, net of tax: | Foreign currency exchange contracts | Revenue |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income | 41 | 15
Accumulated Defined Benefit Plans Adjustment |  |
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 | 7 | 2,475
Accumulated Defined Benefit Plans Adjustment | Income tax expense |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax | (3) | (780)
Accumulated Defined Benefit Plans Adjustment | Net income |  |
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 | 7 | 2,475
Accumulated Defined Benefit Plans Adjustment | Investment income and other |  |
AmountsReclassifiedFromAOCI [Line Items] |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax | (23) | (35)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | $ 0 | $ 3,290

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