Changes in Fair Value of Contingent Consideration Obligations (Detail) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Business Acquisition Contingent Consideration
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration beginning balance	$ 43.0	$ 33.5	$ 33.5
Acquisitions			27.5
Payments			(4.5)
Adjustments and foreign exchange			(13.5)
Contingent consideration ending balance	$ 43.0	$ 33.5	$ 43.0