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Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
2021	$ 70.7
2022	66.1
2023	62.1
2024	58.4
2025	50.0
Thereafter	219.1
Total lease payments	526.4
Less: imputed interest	(186.3)
Total lease obligations	340.1	$ 320.4
Finance Leases
2021	43.2
2022	40.7
2023	37.0
2024	32.1
2025	30.7
Thereafter	381.9
Total lease payments	565.6
Less: imputed interest	(284.4)
Total lease obligations	$ 281.2	$ 253.4

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