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Commitments and Contingencies - Summary of Net Asbestos Charges (Detail) - Asbestos Related Matters [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Asbestos Related Contingencies [Line Items] |  |  |  |
Asbestos provision, net(a) | [1] | $ 47.9 | $ 53.8 |
Asbestos remeasurement, net |  | (68.1) | 10.0 |
Settlement agreements and other |  | 0.0 | 58.9 |
Continuing Operations [Member] |  |  |  |
Asbestos Related Contingencies [Line Items] |  |  |  |
Asbestos provision, net(a) | [1] | 47.9 | 53.8 | $ 56.5
Asbestos remeasurement, net |  | (68.1) | 10.0 | (76.4)
Settlement agreements and other |  | 0.0 | (58.9) | 0.0
Asbestos-related (benefit) cost, net |  | $ (20.2) | $ 4.9 | $ (19.9)
[1] | (a) Includes certain administrative costs such as legal-related costs for insurance asset recoveries.

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