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Property and Equipment - Future Minimum Lease Payments (Details) $ in Millions	Dec. 31, 2017 USD ($)
Property, Plant and Equipment [Abstract]
Operating Leases, 2018	$ 65.0
Operating Leases, 2019	59.5
Operating Leases, 2020	49.9
Operating Leases, 2021	39.7
Operating Leases, 2022	28.3
Operating Leases, 2023 and thereafter	159.3
Operating Leases, Total	401.7
Capital Lease Obligations, 2018	36.4
Capital Lease Obligations, 2019	33.2
Capital Lease Obligations, 2020	28.8
Capital Lease Obligations, 2021	28.4
Capital Lease Obligations, 2022	28.7
Capital Lease Obligations, 2023 and thereafter	327.7
Capital Lease Obligations, Total	483.2
Less: Interest portion	(211.7)
Obligations under capital leases	271.5
Operating & Capital Lease Obligations, 2018	101.4
Operating & Capital Lease Obligations, 2019	92.7
Operating & Capital Lease Obligations, 2020	78.7
Operating & Capital Lease Obligations, 2021	68.1
Operating & Capital Lease Obligations, 2022	57.0
Operating & Capital Lease Obligations, 2023 and thereafter	487.0
Operating & Capital Lease Obligations, Total	$ 884.9

X

- Definition

Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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