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Income Taxes (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Income Taxes [Line Items]        
Effective tax rate (0.80%) (1.10%) 1.60% (1.00%)
Discrete tax benefit related to release of valuation allowance     $ 1.1  
Net unrecognized tax benefits which would impact effective tax rate if recognized $ 3.1   $ 3.1  
Minimum | Subsidiaries        
Income Taxes [Line Items]        
Effective tax rate     0.00%  
Maximum | Subsidiaries        
Income Taxes [Line Items]        
Effective tax rate     35.00%