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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Goodwill And Intangible Assets [Line Items]    
Amortization expense $ 14.0 $ 17.6
Estimated amortization expense, remainder of 2022 42.4  
Estimated amortization expense, year 2023 55.5  
Estimated amortization expense, year 2024 55.1  
Estimated amortization expense, year 2025 54.5  
Estimated amortization expense, year 2026 53.5  
Estimated amortization expense, thereafter $ 565.9  
Thomson Reporting Unit [Member] | Maximum [Member]    
Goodwill And Intangible Assets [Line Items]    
Reporting unit, percentage of fair value in excess of carrying amount 10.00%  
All Other Reporting Units [Member]    
Goodwill And Intangible Assets [Line Items]    
Reporting unit, percentage of fair value in excess of carrying amount 10.00%