XML 63 R53.htm IDEA: XBRL DOCUMENT v3.22.2.2
Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Goodwill And Intangible Assets [Line Items]        
Amortization expense $ 13.6 $ 17.6 $ 41.4 $ 52.9
Estimated amortization expense, remainder of 2022 13.1   13.1  
Estimated amortization expense, year 2023 52.3   52.3  
Estimated amortization expense, year 2024 51.9   51.9  
Estimated amortization expense, year 2025 51.7   51.7  
Estimated amortization expense, year 2026 50.8   50.8  
Estimated amortization expense, thereafter $ 546.3   $ 546.3  
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%   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%   10.00%