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INCOME TAXES (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Income Tax Examination [Line Items] |  |  |  |  |
Effective tax rate | 24.40% | 23.50% | 24.90% | 24.20% |
Deferred tax assets | $ 580 |  | $ 580 |  | $ 591
ITALY |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |
Deferred tax assets |  |  |  |  | $ 700

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