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INCOME TAXES - Reconciliation between statutory and effective income tax (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Effective income tax rate reconciliation, difference due to tax effects      
Netherlands corporate tax rate 25.00% 25.00% 25.00%
(Loss) / profit before tax from continued operations $ (24) $ 347 $ (595)
Income tax benefit at statutory tax rate (25.0%) (6) 87 (148)
Different tax rates in different jurisdictions (90) 152 (76)
Non-deductible expenses 216 89 320
Non-taxable income (35) (81) (11)
Adjustments in respect of previous years 52 (3) 44
Movement in (un)recognized deferred tax assets 173 247 230
Withholding taxes 123 62 (179)
Tax claims 25 59 5
Change in income tax rate 10 (7) 28
Minimum taxes and other 4 30 7
Income tax expense $ 472 $ 635 $ 220
Effective tax rate (1966.70%) 183.00% (37.00%)