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Leases - Maturity of Lease Liabilities (Details) $ in Millions	Sep. 30, 2020 USD ($)
Operating Leases
Remaining 2020	$ 14.2
2021	51.1
2022	43.9
2023	37.7
2024	32.9
Thereafter	100.1
Total lease payments	279.9
Less: Present value discount	(25.4)
Present value lease liabilities	254.5
Finance Leases
Remaining 2020	0.1
2021	0.4
2022	0.2
2023	0.2
2024	0.1
Thereafter	0.2
Total lease payments	1.2
Less: Present value discount	0.0
Present value lease liabilities	1.2
Total
Remaining 2020	14.3
2021	51.5
2022	44.1
2023	37.9
2024	33.0
Thereafter	100.3
Total lease payments	281.1
Less: Present value discount	(25.4)
Present value lease liabilities	$ 255.7

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