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Restructuring Activities - Schedule of Changes in the Liabilities Related to the Transformation Program (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning Balance | $ 9.2 | $ 3.8 |
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] | Selling, General and Administrative Expense | Selling, General and Administrative Expense |
Expenses | $ 13.3 | $ 54.2 | $ 12.1
Cash payments | (17.0) | (48.3) |
Non-cash items and other | (0.8) | (0.5) |
Ending Balance | 4.7 | 9.2 | 3.8
Professional Fees [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning Balance | 1.0 | 0.6 |
Expenses | 1.6 | 8.0 | 7.2
Cash payments | (2.6) | (7.6) |
Non-cash items and other | 0.0 | 0.0 |
Ending Balance | 0.0 | 1.0 | 0.6
Retention and Separation [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning Balance | 8.2 | 3.2 |
Expenses | 10.9 | 45.7 | 4.8
Cash payments | (14.4) | (40.2) |
Non-cash items and other | 0.0 | (0.5) |
Ending Balance | 4.7 | 8.2 | 3.2
Other [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning Balance | 0.0 | 0.0 |
Expenses | 0.8 | 0.5 | 0.1
Cash payments | 0.0 | (0.5) |
Non-cash items and other | (0.8) | 0.0 |
Ending Balance | $ 0.0 | $ 0.0 | $ 0.0

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