Transformation Program - Additional Information (Detail) $ in Millions  | 
12 Months Ended | 
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| 
 Dec. 31, 2021  
USD ($) 
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| Restructuring Cost and Reserve [Line Items] | |
| Total cost of transformation program | $ 12.9 | 
| Minimum [Member] | |
| Restructuring Cost and Reserve [Line Items] | |
| Expected Pre-tax charges | 25.0 | 
| Maximum [Member] | |
| Restructuring Cost and Reserve [Line Items] | |
| Expected Pre-tax charges | $ 30.0 | 
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- Definition Total cost of transformation program. No definition available. 
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- 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. No definition available. 
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