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CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS	12 Months Ended
CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS	Dec. 31, 2018
Related Party Transactions [Abstract]
CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS	CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS Repurchase of Common Stock held by ValueAct Capital Master Fund On February 3, 2017, the Company entered into a stock repurchase agreement with ValueAct Capital Master Fund, L.P., a related party, to repurchase 10,525,204 shares of the Company’s common stock for approximately $363 million. The shares were repurchased under the stock repurchase program approved by the Board of Directors in November 2016. The purchase closed on February 8, 2017 and was funded with cash on hand and borrowings under the Revolving Credit Facility. The shares were subsequently retired.