Leases - Maturity of Lease Liabilities (Details) $ in Millions	Jun. 30, 2021 USD ($)
Operating Leases
Remaining 2021	$ 29.1
2022	53.9
2023	47.6
2024	42.4
2025	36.8
Thereafter	117.4
Total lease payments	327.2
Less: Present value discount	(27.2)
Present value of lease liabilities	300.0
Finance Leases
Remaining 2021	0.4
2022	0.7
2023	0.5
2024	0.2
2025	0.2
Thereafter	0.1
Total lease payments	2.1
Less: Present value discount	0.0
Present value of lease liabilities	2.1
Total
Remaining 2021	29.5
2022	54.6
2023	48.1
2023	42.6
2025	37.0
Thereafter	117.5
Total lease payments	329.3
Less: Present value discount	(27.2)
Present value of lease liabilities	$ 302.1