Restructuring, Impairment and Other Charges - Schedule of Changes in the Restructuring Reserve (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	$ 62.7
Restructuring Charges	17.8	18.0
Foreign Exchange and Other	(0.9)
Cash Paid	(18.0)
Balance at the end	61.6
Employee terminations
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	13.0
Restructuring Charges	14.2
Foreign Exchange and Other	(0.8)
Cash Paid	(11.1)
Balance at the end	15.3
Multi-employer pension withdrawal obligations
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	34.6
Restructuring Charges	0.5
Foreign Exchange and Other	(0.1)
Cash Paid	(1.5)
Balance at the end	33.5
Lease terminations and other
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	15.1
Restructuring Charges	3.1
Cash Paid	(5.4)
Balance at the end	$ 12.8