Leases (Maturities of Operating and Financing Lease Liabilities) (Details) $ in Millions	Mar. 31, 2019 USD ($)
Operating leases
2019 (remainder of year)	$ 95.5
2020	107.8
2021	88.5
2022	74.6
2023	63.3
2024	75.1
Thereafter	161.1
Total payments	665.9
Less: present value discount	(140.5)
Present value of lease payments	525.4
Current portion	106.6
Noncurrent portion	418.8
Finance leases
2019 (remainder of year)	91.6
2020	103.4
2021	94.7
2022	92.7
2023	91.2
2024	51.5
Thereafter	421.9
Total payments	947.0
Less: present value discount	(315.5)
Present value of lease payments	631.5
Current portion	81.0
Noncurrent portion	$ 550.5

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