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Amortizable Intangible Assets - Additional Information (Details)
$ in Millions
Sep. 30, 2021
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
Amortization expense estimated, year one (2021) $ 118.3
Amortization expense estimated, year two (2022) 115.5
Amortization expense estimated, year three (2023) 108.8
Amortization expense estimated, year four (2024) 104.6
Amortization expense estimated, year five (2025) $ 102.2