Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Effective tax rate	15.00%	18.80%
Limitation on deduction of executive compensation and state income taxes	$ 1.0
Gross unrecognized tax benefits excluding interest and penalties	44.1		$ 43.5
Net unrecognized tax benefit excluding interest and penalties that would impact effective tax rate	36.1
Accrued interest on unrecognized tax benefits	0.6		$ 0.5
Net unrecognized tax benefits, excluding interest and penalties, related to foreign tax positions	$ 0.7