Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	34.50%	35.40%	28.10%	24.80%
Foreign currency exchange losses related to Venezuelan subsidiaries	$ 30.5	$ (0.2)	$ 29.7	$ 14.8
Effective income tax rate, benefited from certain favorable discrete items				14.0
Effective income tax rate, favorable tax settlement				7.0
Effective income tax rate, reserves, statute of limitations and a successful judicial verdict				$ 6.0