Restructuring Activities - Additional Information (Detail) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|
Apr. 30, 2025 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Restructuring Cost and Reserve [Line Items] | |||||
| Total cost of transformation program | $ 0.0 | $ 0.0 | $ 0.0 | $ 9.4 | |
| Restructuring costs | 0.8 | 2.7 | 4.8 | 68.2 | |
| Technology Realignment Program [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Expected Pre-tax charges | $ 5.0 | 4.2 | |||
| Restructuring costs | 0.6 | 4.2 | |||
| Restructuring Program [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Restructuring costs | $ 0.8 | $ 2.7 | 4.8 | $ 68.2 | |
| Minimum [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Expected Pre-tax charges | 92.5 | ||||
| Minimum [Member] | Restructuring Program [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Expected Pre-tax charges | $ 73.9 | ||||
| X | ||||||||||
- Definition Pre-tax Charge, Total No definition available.
|
| X | ||||||||||
- Definition Total cost of transformation program. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|