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Commitments and Contingencies - Roll forward of Asbestos Liability and Related Assets (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Changes in estimate during the period: |  |  |  |  |  |
Asbestos-related liabilities (see Note 20) |  | $ 0.0 |  | $ 91.4 |  |
Asbestos-related assets (See Note 20) |  | 0.0 |  | 91.0 |  |
Noncurrent portion |  | 0.0 |  | 840.6 |  |
Noncurrent Asbestos Related Assets |  | 0.0 |  | 353.7 |  |
Asbestos Related Matters [Member] |  |  |  |  |  |
Changes in estimate during the period: |  |  |  |  |  |
Asbestos provision, net(a) | [1] | 14.4 |  | 30.8 |  |
Asbestos remeasurement |  | 0.0 | [2] | 135.9 |  |
Settlement Agreement |  | 0.0 |  | (100.4) |  |
Net cash activity and other(a) | [1] | (14.9) |  | (9.8) |  |
DivestitureOfLegacyAsbestosAssetsAndLiabilities |  | (486.8) |  |  |  |
Net Balance, Ending |  | 0.0 |  | 487.3 |  | $ 430.8
Asbestos Related Matters [Member] | Liability [Member] |  |  |  |  |  |
Liability for Asbestos and Environmental Claims, Net [Roll Forward] |  |  |  |  |  |
Balance, Beginning |  | 0.0 |  | 932.0 |  | 817.6
Changes in estimate during the period: |  |  |  |  |  |
Asbestos provision, net(a) | [1] | 13.4 |  | 37.1 |  |
Asbestos remeasurement |  | 0.0 | [2] | 155.7 |  |
Settlement Agreement |  | 0.0 |  |  |  |
Net cash activity and other(a) | [1] | (57.2) |  | (78.4) | [2] |
DivestitureOfLegacyAsbestosAssetsAndLiabilities |  | 888.2 |  |  |  |
Noncurrent portion |  |  |  | 840.6 |  |
Asbestos Related Matters [Member] | Asset [Member] |  |  |  |  |  |
Liability for Asbestos and Environmental Claims, Net [Roll Forward] |  |  |  |  |  |
Balance, Beginning |  | 0.0 |  | 444.7 |  | $ 386.8
Changes in estimate during the period: |  |  |  |  |  |
Asbestos provision, net(a) |  | 1.0 |  | 6.3 |  |
Asbestos remeasurement |  | 0.0 |  | 19.8 |  |
Settlement Agreement |  | 0.0 |  | (100.4) |  |
Net cash activity and other(a) |  | 42.3 |  | $ 68.6 |  |
DivestitureOfLegacyAsbestosAssetsAndLiabilities |  | $ 401.4 |  |  |  |
[1] | 2021 includes costs related to the divestiture of InTelCo as well as certain administrative costs such as legal-related costs for insurance asset recoveries. 2020 included amounts to maintain a rolling 10-year provision prior to the transition in 2020 to full horizon.
[2] | In 2020, we extended our projection to include pending claims and claims expected to be filed through 2052, which reflected the full time period over which we expected asbestos-related claims to be filed against InTelCo.

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- Definition Asbestos-related assets include both the probable insurance recoveries for the asbestos liabilities for pending claims, as well as unasserted claims to be filed over the next 10 years. + References No definition available. + Details
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- Definition Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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