INCOME TAXES - Summary of Components of Current and Noncurrent Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Accrued expenses	$ 25.2	$ 34.4
Accrued rebates and returns	43.2	48.1
Pension and other post-employment liabilities	47.6	70.3
Stock-based compensation	18.2	19.2
Obsolescence reserves and other inventory items	11.6	12.6
Net operating loss carryforwards	16.3	14.7
Settlement loss on interest rate forward swaps	15.6	16.2
Statutory loss on investment in subsidiaries	6.6	0.0
State tax credit carryforwards	8.8	7.2
Other—net	4.9	0.0
Valuation allowance	(14.8)	(7.7)
Total deferred tax assets	183.2	215.0
Depreciation and amortization	(68.0)	(66.6)
Unremitted earnings and cumulative foreign currency translation adjustments	(5.4)	(4.2)
Other—net	0.0	(5.8)
Total deferred tax liabilities	(73.4)	(76.6)
Net deferred income tax liabilities—noncurrent	118.5	150.4
Net deferred income tax liabilities—noncurrent	(8.7)	(12.0)
Deferred tax assets—net	$ 109.8	$ 138.4