Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Amounts Included in Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Other assets	$ 24.8	$ 21.7
Other current liabilities	(4.1)	(4.6)
Other liabilities	(344.0)	(256.5)
Net amount recognized	(323.3)	(239.4)
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other liabilities	(39.9)	(14.8)
Net amount recognized	(39.9)	(14.8)
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	24.8	21.7
Other current liabilities	(4.1)	(4.6)
Other liabilities	(304.1)	(241.7)
Net amount recognized	$ (283.4)	$ (224.6)