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RESTRUCTURING ACTIVITIES (Pre-Tax Restructuring charges) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | $ 49 | $ 30 |
Invigorate Program [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Employee separation costs | 45 | 29 | $ 9
Facility-related costs | 4 | 1 | 2
Asset impairment charges | 2 | 3 | 0
Total restructuring charges | $ 51 | $ 33 | $ 11

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