INCOME TAXES - Income Before Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income (loss) from continuing operations before income taxes:
United States	$ 123.4	$ 146.9	$ 36.0
Foreign	(3.7)	(19.7)	44.6
Income from continuing operations before income taxes	119.7	127.2	80.6
Provision for (benefit from) income taxes:
United States federal	40.9	58.2	27.4
State and local	16.7	17.9	13.8
Foreign	(3.2)	5.1	7.4
Provision for income taxes	54.4	81.2	48.6
Current:
United States federal	(2.7)	2.6	3.2
State and local	3.9	3.5	0.7
Foreign	21.7	7.2	11.3
Current income tax expense (benefit)	22.9	13.3	15.2
Deferred:
United States federal	43.6	55.6	24.2
State and local	12.8	14.4	13.1
Foreign	(24.9)	(2.1)	(3.9)
Provision for deferred income taxes	$ 31.5	$ 67.9	$ 33.4