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INTANGIBLE ASSETS AND GOODWILL - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Amortization expense of intangible assets $ 185 $ 87 $ 65
Expected aggregate future amortization expense of intangible assets for next five years $ 180    
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Range of amortization life of intangible assets 15 years    
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Range of amortization life of intangible assets 30 years