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FAIR VALUE MEASUREMENTS - Interest Rate Swaps (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jul. 01, 2013
Accounts receivable
Interest rate derivatives
Maximum counterparty credit exposure	$ 35,000,000	$ 35,000,000
Term loan \| 2013 Term Loan Facility due 2018
Interest rate derivatives
Amount of facility	500,000,000			$ 500,000,000
Interest rate swaps \| Term loan \| 2013 Term Loan Facility due 2018
Interest rate derivatives
Amount of variable-rate debt hedged	$ 150,000,000
Weighted average fixed interest rate (as a percent)	2.79%
Hedges of cash flows \| Interest rate swaps
Interest rate derivatives
Change in fair value of interest rate derivative instruments recognized in other comprehensive income	$ 0	1,000,000
Hedges of cash flows \| Interest rate swaps \| Maximum
Interest rate derivatives
Change in fair value of interest rate derivative instruments recognized in other comprehensive income			$ 1,000,000
Hedges of cash flows \| Interest rate swaps \| Financial charges and other
Interest rate derivatives
Net realized loss related to the interest rate swaps	2,000,000	2,000,000	1,000,000
Designated as hedge \| Interest rate swaps \| Recurring fair value measurement \| Level 2
Interest rate derivatives
Fair value of derivatives, gross	1,000,000	1,000,000
Fair value of derivatives, net	$ 1,000,000	$ 1,000,000
Designated as hedge \| Interest rate swaps \| Recurring fair value measurement \| Level 2 \| Maximum
Interest rate derivatives
Fair value of derivatives, gross			1,000,000
Fair value of derivatives, net			$ 1,000,000