Restructuring, Impairment and Other Charges - Schedule of Changes in the Restructuring Reserve (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	$ 63.7
Restructuring Charges	9.1	$ 17.8
Foreign Exchange and Other	(0.1)
Cash Paid	(22.6)
Balance at the end	50.1
Employee terminations
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	20.2
Restructuring Charges	5.0
Foreign Exchange and Other	(0.1)
Cash Paid	(16.8)
Balance at the end	8.3
Multi-employer pension withdrawal obligations
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	32.9
Restructuring Charges	0.5
Cash Paid	(1.2)
Balance at the end	32.2
Lease terminations and other
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	10.6
Restructuring Charges	3.6
Cash Paid	(4.6)
Balance at the end	$ 9.6