Leases - Lease Receivables (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Direct financing leases receivable
Operating Leased Assets [Line Items]
Total minimum rents receivable	$ 74.5	$ 92.1
Less: unearned income	(18.8)	(26.5)
Net investment in direct financing leases receivable	55.7	65.6
Less: current portion	(10.8)	(9.9)
Long-term direct financing lease receivable	44.9	55.7
Contingent rental income	14.0	15.4	$ 16.7
Net investment equipment lease
Operating Leased Assets [Line Items]
Less: current portion	(8.2)	(7.9)
Long-term direct financing lease receivable	71.1	79.3
Total minimum leases receivable	106.4	122.5
Less: unearned income	(27.1)	(35.3)
Net investment in equipment leases receivables	$ 79.3	$ 87.2

Net Investment in Leases Receivable, Current

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- Definition

Net Investment in Leases Receivable, Noncurrent

+ References

No definition available.

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- Definition

For sales-type and direct financing leases, total contingent rentals received during the period.

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The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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- Definition

The remaining (unamortized) difference between the gross investment in a direct financing lease and the cost or carrying amount, if different, of the leased property as of the balance sheet date.

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Amount of remaining payments as of the balance sheet date that lessees are obligated to make or can be required to make under direct financing leases, including any guarantee of residual value and executory costs. The amount also includes any guaranteed rental payments by an unrelated third-party provided that are financially capable of making such payments.

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- Definition

The net investment in sales type leases as of the balance sheet date consisting of: (a) minimum lease payments on sales type leases and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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The remaining (unamortized) difference between the gross investment in a sales-type lease and the cost or carrying amount of the leased property as of the balance sheet date.

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Amount of remaining payments as of the balance sheet date that lessees are obligated to make or can be required to make under sales-type leases, including any guarantee of residual value and executory costs. The amount also includes any guaranteed rental payments by an unrelated third-party provided that are financially capable of making such payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=77910348&loc=d3e34102-112682

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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