SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION 2 (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Real Estate And Accumulated Depreciation
Fair value adjustment, liabilities	$ 3.6
Aggregate cost for federal income tax purposes	8,000.0
Capital leases	$ 11.5
Building improvements \| Maximum
Real Estate And Accumulated Depreciation
Period over which real estate assets are depreciated, maximum	40 years
Equipment \| Maximum
Real Estate And Accumulated Depreciation
Period over which real estate assets are depreciated, maximum	12 years
Mortgages
Real Estate And Accumulated Depreciation
Mortgage debts	$ 1,100.0

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Cost basis of real estate investments for federal income tax purposes for entities with a substantial portion of business acquiring and holding investment real estate.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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