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INCOME TAXES - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes [Line Items] |  |  |  |  |  |
Effective income tax rate |  |  |  | 20.40% | 31.30% | 33.20%
Provisional benefit from Jobs Act 2017 |  | $ 272 |  |  | $ 272 |
Loss on mark to market of defined benefit plan, tax benefit | $ 390 | 193 | $ 978 |  |  |
Loss on mark to market of defined benefit plan | 1,627 | 800 | 2,651 |  |  |
Decrease to foreign deferred tax asset |  |  |  | $ 14 | 14 |
Transformation cost |  |  |  | 360 |  |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount |  |  |  | 87 |  |
Tax benefit from share-based compensation |  |  |  | $ 38 |  |
Reduction of effective tax rate due to share-based compensation benefits |  |  |  | 0.60% |  |
Deferred tax expense |  |  |  | $ 758 | 1,224 | $ 117
Income tax benefit |  |  |  | (1,228) | (2,232) | (1,699)
Income tax holiday, decrease of non-U.S. tax expense |  |  |  | $ 27 | $ 24 | $ 21
Income tax holiday, per share impact (usd per share) |  |  |  | $ 0.03 | $ 0.03 | $ 0.02
Change in valuation allowance |  |  |  | $ (14) | $ (33) | $ (38)
Operating loss carryforwards | 31 |  |  | 31 |  |
Operating loss Carryforwards expiring in 2021 | 30 |  |  | 30 |  |
Non-U.S. loss carryforwards | 706 |  |  | 706 |  |
Undistributed earnings of foreign subsidiaries | 6,583 |  |  | 6,583 |  |
Indefinitely reinvested undistributed earnings of foreign subsidiaries | 1,458 |  |  | 1,458 |  |
Gross unrecognized tax benefits that would impact effective tax rate, if recognized | $ 165 | $ 159 | $ 142 | 165 | $ 159 | $ 142
Adjustments |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Effective income tax rate |  |  |  |  | 1.00% |
Income tax benefit |  |  |  | $ 38 | $ 71 |

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