ACQUISITIONS, DIVESTITURES, AND ASSETS HELD FOR SALE - Aggregate Purchase Price Paid for Acquisitions and Other Adjustments to Consideration (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Cash	$ 63,917	$ 2,419,437	$ 374,321
Series of individual business acquisitions for Year 2016, 2015 and 2014
Business Acquisition [Line Items]
Cash	55,388	2,420,764	373,820
Promissory notes	40,938	64,124	125,245
Deferred consideration	4,094	3,172	3,889
Contingent consideration	988	10,070	17,174
Total purchase price	101,408	$ 2,498,130	$ 520,128
Acquisitions Year 2015
Business Acquisition [Line Items]
Cash	8,529
Promissory notes reduction resulting from adjustment	(1,790)
Total purchase price	$ 6,739