Schedule - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 34.1	$ 22.3	$ 22.7
Additions Charged (Credited) to Expense	22.3	13.5	2.0
Deductions to Reserve	(4.5)	(0.4)	(1.4)
Effects of Foreign Currency	(0.3)	(1.3)	(1.0)
Balance at End of Period	51.6	34.1	22.3
Deferred Tax Asset Valuation Allowances [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	72.7	122.8	42.7
Additions Charged (Credited) to Expense	24.8	(53.7)	74.7
Deductions to Reserve	(12.4)	(5.6)	(9.2)
Effects of Foreign Currency	(1.1)	(1.6)
Acquired Allowances	4.3	10.8	14.6
Balance at End of Period	$ 88.3	$ 72.7	$ 122.8