Leases Lessee - Future Minimum Payments Due (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 789.6
2021	759.7
2022	742.8
2023	728.4
2024	714.5
Thereafter	3,795.7
Total future minimum lease payments	7,530.7
Less: Amounts representing interest	3,487.9
Present value of lease liabilities	4,042.8
Leaseback of Real Estate Contributed to Pension Plan
2020	6.7
2021	6.9
2022	7.1
2023	7.3
2024	6.2
Thereafter	48.8
Total future minimum lease payments	83.0
Less: Amounts representing interest	61.9
Sale Leaseback Transaction, Residual Value	50.9
Present value of lease liabilities	72.0
Finance Lease Liabilities, Payments, Due [Abstract]
2020	25.2
2021	10.4
2022	5.7
2023	5.6
2024	3.6
Thereafter	10.7
Total future minimum lease payments	61.2
Less: Amounts representing interest	12.3
Present value of lease liabilities	$ 48.9