Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS - Additional Information (Details)

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GOODWILL AND INTANGIBLE ASSETS - Additional Information (Details) - USD ($)
3 Months Ended
Sep. 30, 2017
Mar. 31, 2018
Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]      
Impairment of intangible assets, indefinite-lived $ 0    
Amortization expense related to purchased intangible assets   $ 42,200,000 $ 45,000,000