Commitments and Contingencies - Future Minimum Lease Commitments Under Non-Cancelable Operating Leases (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Operating Leased Assets [Line Items]
2014	$ 54.5
2015	39.8
2016	29.4
2017	21.4
2018	13.4
Thereafter	23.4
Total	181.9
Minimum lease payments
Operating Leased Assets [Line Items]
2014	55.5
2015	40.7
2016	30.1
2017	21.5
2018	13.5
Thereafter	23.5
Total	184.8
Minimum sublease rentals
Operating Leased Assets [Line Items]
2014	(1.0)
2015	(0.9)
2016	(0.7)
2017	(0.1)
2018	(0.1)
Thereafter	(0.1)
Total	$ (2.9)