Annual report pursuant to Section 13 and 15(d)

Lease Obligations - Capital Leases Included in Property, Plant and Equipment on Accompanying Consolidated Balance Sheets (Detail)

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Lease Obligations - Capital Leases Included in Property, Plant and Equipment on Accompanying Consolidated Balance Sheets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Schedule Of Capital Leases [Line Items]    
Equipment $ 7.7 $ 10.6
Less: accumulated depreciation (7.4) (9.7)
Total $ 0.3 $ 0.9