Leases - Future Minimum Lease Commitments (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Operating Leases
2021 (excluding the six months ended June 30, 2021)	$ 211.4
2022	414.4
2023	402.6
2024	385.2
2025	382.5
Thereafter	7,824.3
Total lease payments	9,620.4
Less: Imputed interest	(5,161.6)
Present value of future lease payments	4,458.8
Less: Current portion of lease obligations	(133.0)
Long-term portion of lease obligations	4,325.8
Finance Leases
2021 (excluding the six months ended June 30, 2021)	10.8
2022	21.6
2023	20.8
2024	16.7
2025	16.7
Thereafter	376.8
Total lease payments	463.4
Less: Imputed interest	(247.4)
Present value of future lease payments	216.0
Less: Current portion of lease obligations	(7.1)
Long-term portion of lease obligations	208.9
Financing Obligations
2021 (excluding the six months ended June 30, 2021)	185.2
2022	370.3
2023	370.4
2024	370.4
2025	370.5
Thereafter	9,095.3
Total lease payments	10,762.1
Less: Imputed interest	(6,647.2)
Present value of future lease payments	4,114.9
Less: Current portion of lease obligations	(37.4)	$ (36.0)
Long-term portion of lease obligations	$ 4,077.5	$ 4,096.4

Finance Lease, Liability, Payments, Due After Year Four

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Financing Obligation

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Financing Obligation, Current

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Financing Obligation, Noncurrent

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Financing Obligation, Payment, Due [Abstract]

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Lessee, Operating Lease, Liability, Payments, Due After Year Four

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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