Accumulated Other Comprehensive Earnings - Schedule of Accumulated Comprehensive Loss (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending Balance	$ (2.6)	$ (32.8)
Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(52.4)	(49.0)	(18.4)
Net change in period	26.8	(3.4)	(30.6)
Ending Balance	(25.6)	(52.4)	(49.0)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	20.5	4.4	20.5
Net change in period	1.6	16.1	(16.1)
Ending Balance	22.1	20.5	4.4
Fair Value of Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(0.9)	(2.6)	0.1
Net change in period	1.8	1.7	(2.7)
Ending Balance	0.9	(0.9)	(2.6)
Accumulated Other Comprehensive Earnings (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(32.8)	(47.2)	2.2
Net change in period	30.2	14.4	(49.4)
Ending Balance	$ (2.6)	$ (32.8)	$ (47.2)