Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Leased Assets [Line Items]
Option to extend lease term	10 years	10 years
Option to terminate lease term		1 year
Rental expense	$ 81.5		$ 77.7
Rental expense				$ 89.4
Minimum
Operating Leased Assets [Line Items]
Remaining lease terms	1 month	1 month
Maximum
Operating Leased Assets [Line Items]
Remaining lease terms	9 years	9 years