SUBSEQUENT EVENTS - Interest Rate Swaps (Details 3) - USD ($)	Jan. 25, 2016	Dec. 31, 2015	Jul. 01, 2013
Term loan | 2013 Term Loan Facility due 2018
Subsequent events
Amount of debt		$ 500,000,000	$ 500,000,000
Interest rate swaps | Term loan | 2013 Term Loan Facility due 2018
Subsequent events
Amount of variable-rate debt hedged		$ 150,000,000
Weighted average fixed interest rate (as a percent)		2.79%
Subsequent event | Interest rate swaps
Subsequent events
Weighted average fixed interest rate (as a percent)	2.10%
Subsequent event | Interest rate swaps | Term loan | 2013 Term Loan Facility due 2018
Subsequent events
Amount of variable-rate debt hedged	$ 350,000,000