Schedule - Valuation and Qualifying Accounts (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 22.7	$ 22.8	$ 17.2
Additions Charged (Credited) to Expense	2.0	1.9	7.1
Deductions to Reserve	(1.4)	(1.5)	(1.8)
Effects of Foreign Currency	(1.0)	(0.5)
Acquired Allowances			0.3
Balance at End of Period	22.3	22.7	22.8
Deferred Tax Asset Valuation Allowances [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	42.7	41.3	40.3
Additions Charged (Credited) to Expense	74.7	1.5	(0.9)
Deductions to Reserve	(9.2)	(0.1)	(0.3)
Acquired Allowances	14.6		2.2
Balance at End of Period	$ 122.8	$ 42.7	$ 41.3