XML 94 R81.htm IDEA: XBRL DOCUMENT v3.20.4
Goodwill and Intangible Assets - Future Amortization (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Estimated future amortization expense related to amortizable intangible asset:    
2021 $ 36.3  
2022 30.7  
2023 28.0  
2024 25.6  
2025 24.7  
Thereafter 83.8  
Net Carrying Amount, intangible assets subject to amortization $ 229.1 $ 233.2