NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Supplemental Information - Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2013
Supplemental Information - Statements of Cash Flows
Income taxes paid related to continuing operations		$ 106,979	$ 100,986	$ 26,037
Income tax refunds received related to continuing operations		196	1,407	4,414
Interest paid		182,425	157,349	147,083
Non- cash transactions
Non-cash transactions related to capital lease obligations	$ 2,800	$ 2,800	$ 0	$ 10,400
4.875% Notes
Non- cash transactions
Interest rate (as a percent)			4.875%	4.875%	4.875%
4.875% Notes | Class A Common Stock
Non- cash transactions
Non-cash conversion, net of tax			$ 8,600