GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in Carrying Amount of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Finite-lived and Indefinite-lived Intangible Assets [Roll Forward]
Beginning of period	$ 1,861,973	$ 1,842,561	$ 1,842,561
Intangible assets acquired during the period	11,515		35,564
Valuation adjustments for prior year acquisitions	2,124		168,979
Intangible write-offs due to disposition and assets held for sale			(15,961)
Impairments during the period	(408)		(1,406)
Intangible amortization during the period	(29,089)	$ (18,274)	(129,300)
Changes due to foreign currency fluctuations	11,094		(38,464)
End of period	$ 1,857,209		$ 1,861,973