Goodwill and Other Intangible Assets - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill acquired	$ 99.7	$ 29.4
Year to date amortization expense	75.4	$ 72.0	$ 68.9
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Amortization expense, 2021	80.4
Amortization expense, 2022	74.1
Amortization expense, 2023	69.3
Amortization expense, 2024	64.4
Amortization expense, 2025	$ 59.8
Percent of finite lived intangible assets under amortization method	0.77