INCOME TAXES - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income tax expense	$ 7.6	$ 9.1
Effective income tax rate	7.00%	16.60%
Change to Provisional One-Time US Tax Expense on Post 1986 Foreign Earnings	$ 4.5
One Time Provisional US Tax Expense on Post 1986 Foreign Earnings	53.5		$ 58.0
Existing Post 1986 Foreign Earnings Subject to One Time US Tax	1,200.0
Write-Off of Deferred Tax Assets Relating to Officer Compensation	2.8
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	16.0
German Deferred Tax Assets [Member]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 21.6