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Commitments and Contingencies - Summary of Net Asbestos Charges (Detail) (Asbestos Related Matters [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Asbestos Related Contingencies [Line Items] |  |  |
Net asbestos charge | $ 45.8 | $ 94.0 | $ 375.1
Continuing Operations [Member] |  |  |
Asbestos Related Contingencies [Line Items] |  |  |
Asbestos provision | 53.8 | 59.5 | 55.3
Asbestos remeasurement, net | 2.9 | 40.9 | 329.5
Settlement Agreement | (5.8) |  |
Net asbestos charge | 50.9 | 100.4 | 384.8
Discontinued Operations [Member] |  |  |
Asbestos Related Contingencies [Line Items] |  |  |
Asbestos provision | 0.5 | 2.8 |
Asbestos remeasurement, net |  | (9.2) | (9.7)
Settlement Agreement | (5.6) |  |
Net asbestos charge | $ (5.1) | $ (6.4) | $ (9.7)

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- Details
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- Definition Total Asbestos-related costs before tax. + References No definition available. + Details
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- Definition Asbestos Related Costs Provision Before Tax + References No definition available. + Details
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- Definition Asbestos Related Costs Settlement Before Tax + References No definition available. + Details
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- Definition Asbestos Related Remeasurement Costs Before Tax + References No definition available. + Details
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