INCOME TAXES - Deferred Tax Assets Narrative (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Dec. 31, 2016 |
---|---|---|
Valuation Allowance [Line Items] | ||
Valuation allowance | $ 9,387 | $ 0 |
Foreign Tax Credit Carryforwards | ||
Valuation Allowance [Line Items] | ||
Valuation allowance | 5,700 | |
U.S. Residual Deferred Tax Asset Related to Non-U.S. Branches | ||
Valuation Allowance [Line Items] | ||
Valuation allowance | 2,200 | |
Local Non-U.S. Deferred Tax Assets | ||
Valuation Allowance [Line Items] | ||
Valuation allowance | 1,400 | |
State Net Operating Loss Carryforwards | ||
Valuation Allowance [Line Items] | ||
Valuation allowance | $ 100 |