Annual report pursuant to Section 13 and 15(d)

Lease Obligations - Future Minimum Rental Commitments for Non-Cancelable Operating and Capital Leases (Detail)

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Lease Obligations - Future Minimum Rental Commitments for Non-Cancelable Operating and Capital Leases (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Leases [Abstract]  
Operating leases due, 2013 $ 50.1
Operating leases due, 2014 42.0
Operating leases due, 2015 34.8
Operating leases due, 2016 21.8
Operating leases due, 2017 14.3
Operating leases due, Thereafter 30.2
Operating leases due, Total 193.2
Capital leases due, 2013 0.1
Capital leases due, 2014   
Capital leases due, 2015   
Capital leases due, 2016   
Capital leases due, 2017   
Capital leases due, Thereafter   
Capital leases due, Total 0.1
Less: amounts included above representing interest   
Present value of net minimum lease payments $ 0.1