Restructuring, Impairment and Other Charges - Schedule of Changes in the Restructuring Reserve (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	$ 62.7	$ 77.6
Restructuring Charges	61.9	51.1	$ 74.2
Foreign Exchange and Other	(0.2)	1.1
Cash Paid	(60.7)	(67.1)
Balance at the end	63.7	62.7	77.6
Employee terminations
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	13.0	19.7
Restructuring Charges	44.3	30.3
Foreign Exchange and Other	(1.5)	0.4
Cash Paid	(35.6)	(37.4)
Balance at the end	20.2	13.0	19.7
Multi-employer pension plan withdrawal obligations
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	34.6	36.8
Restructuring Charges	1.9	3.0
Foreign Exchange and Other	1.4	(0.6)
Cash Paid	(5.0)	(4.6)
Balance at the end	32.9	34.6	36.8
Lease terminations and other
Restructuring Cost And Reserve [Line Items]
Balance at the beginning	15.1	21.1
Restructuring Charges	15.7	17.8
Foreign Exchange and Other	(0.1)	1.3
Cash Paid	(20.1)	(25.1)
Balance at the end	$ 10.6	$ 15.1	$ 21.1