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Goodwill and Other Intangible Assets, Net - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]          
Impairment of goodwill $ 0 $ 0 $ 0 $ 0 $ 0
Intangible amortization expense     28,300,000 29,400,000 27,300,000
Impairment charge of definite and indefinite life intangibles     $ 0 $ 0 $ 0