Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax [Line Items]
Deferred tax assets		$ 64.4	$ 50.5
Accrued expenses		809.5	728.9
Deferred income taxes		$ 18.9	47.2
Percentage of tax benefit of a qualifying position greater than largest amount of tax benefit		50.00%
Unrecognized tax benefits related to federal, state and foreign taxes		$ 21.5	22.3	$ 36.1
Unrecognized tax benefits that would impact effective tax rate		18.4
Accrued interest		2.6	2.8
Interest and penalties, (credits) expenses		0.3	0.3	(0.2)
Reduction in income tax provision	$ (2.6)	(2.6)		$ (10.9)
Decrease in unrecognized tax benefits within the next 12 months		$ 5.1
Number of months unrecognized tax benefits may decrease		12 months
Undistributed earnings on foreign operations for which income taxes have not been provided		$ 2,500.0
Accounting Standards Update 2015-17 | Restatement Adjustment
Income Tax [Line Items]
Short-term deferred tax assets			(123.9)
Deferred tax assets			28.7
Accrued expenses			(1.1)
Deferred income taxes			$ (94.1)
United States - federal
Income Tax [Line Items]
Operating loss carryforwards, net		$ 34.3
United States - federal | Minimum
Income Tax [Line Items]
Operating loss carryforwards, expiration year		2027
United States - federal | Maximum
Income Tax [Line Items]
Operating loss carryforwards, expiration year		2036
State and Local Jurisdiction
Income Tax [Line Items]
Operating loss carryforwards, net		$ 415.2
State and Local Jurisdiction | Minimum
Income Tax [Line Items]
Operating loss carryforwards, expiration year		2017
State and Local Jurisdiction | Maximum
Income Tax [Line Items]
Operating loss carryforwards, expiration year		2037
Foreign Tax Authority
Income Tax [Line Items]
Operating loss carryforwards, net		$ 158.4
Foreign Tax Authority | Minimum
Income Tax [Line Items]
Operating loss carryforwards, expiration year		2018
Foreign Tax Authority | Maximum
Income Tax [Line Items]
Operating loss carryforwards, expiration year		2027
Indefinite Life
Income Tax [Line Items]
Income tax credits		$ 11.5
Indefinite Life | Foreign Tax Authority
Income Tax [Line Items]
Operating loss carryforwards, net		24.5
Definite Life
Income Tax [Line Items]
Income tax credits		$ 12.3
Definite Life | Minimum
Income Tax [Line Items]
Income tax credits carryforwards, expiration year		2018
Definite Life | Maximum
Income Tax [Line Items]
Income tax credits carryforwards, expiration year		2033