Annual report pursuant to Section 13 and 15(d)

Expected Future Minimum Payment Obligations for Non-Cancelable Operating Leases Exceeding One Year (Detail)

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Expected Future Minimum Payment Obligations for Non-Cancelable Operating Leases Exceeding One Year (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Operating Leased Assets [Line Items]  
2012 $ 18.6
2013 14.6
2014 10.2
2015 7.9
2016 6.0
Thereafter 34.9
Operating Leases, Future Minimum Payments Due, Total $ 92.2