Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating Leased Assets [Line Items]
Option to extend lease term	10 years		10 years
Option to terminate lease term			1 year
Operating lease expense	$ 21.7	$ 20.0	$ 43.2	$ 39.9
Operating leases, not yet commenced, amount	$ 3.8		$ 3.8
Minimum
Operating Leased Assets [Line Items]
Remaining lease terms	1 month		1 month
Operating leases, not yet commenced, term	1 year		1 year
Maximum
Operating Leased Assets [Line Items]
Remaining lease terms	9 years		9 years
Operating leases, not yet commenced, term	6 years		6 years