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INCOME TAXES (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Income Tax Examination [Line Items] |  |  |  |
Provision for income taxes | $ 84 | $ 65 | $ 144 | $ 127
Effective Income Tax Rate Reconciliation, Income Tax Expense (Benefit) Resulting from Tax Reform | $ 10 |  | $ 10 |
Effective Income Tax Rate Reconciliation, Percent | 20.00% | 18.00% | 19.00% | 18.00%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount |  | $ 22 |  | $ 22
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount |  |  |  | $ 22

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