Schedule of Pension Plans with Accumulated Benefit Obligation and Projected Benefit Obligation in Excess of Plan Assets (Detail) (Defined Benefit Pension Plans, USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure
Projected benefit obligation	$ 74.2	$ 75.6
Accumulated benefit obligation	65.5	65.7
Fair value of plan assets	$ 0.9	$ 0.8