Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective tax rate, percentage	29.00%	(77.00%)
Earnings of foreign entities	$ 6.9	$ 7.7
Decrease in valuation allowance of deferred tax assets	10.1
Unrecognized tax benefit for uncertain tax positions	22.5		$ 21.1
Accrued interest and penalties related to income tax liabilities	2.1		$ 2.2
Decrease in unrecognized tax benefits due to expiration of statutes of limitations and settlement of various audits	$ 1.6