Real Estate (Real Estate Subject to Operating Leases) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property Subject to or Available for Operating Lease [Line Items]
Land and improvements	$ 2,489,398	$ 2,490,959
Buildings and improvements	5,943,971	5,913,799
Leasehold interests	355	355
Real estate subject to operating leases, gross	8,433,724	8,405,113
Less accumulated depreciation and amortization	(1,187,925)	(1,146,334)
Real estate subject to operating leases, net, before work in process	7,245,799	7,258,779
Work in progress for buildings and improvements	39,437	27,438
Accounted for using the operating method, net of accumulated depreciation and amortization	7,285,236	7,286,217
Asset under construction
Property Subject to or Available for Operating Lease [Line Items]
Land and improvements	$ 16,618	$ 16,930

Real Estate Investment Property, Net, Before Development In Process

No definition available.

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- Definition

The current amount of expenditures for a real estate project that has not yet been completed.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.10)
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- Definition

Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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- Definition

Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

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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- Definition

The cumulative amount of depreciation for real estate property held for investment purposes.

+ References

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-Publisher FASB
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-Topic 944
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- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

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- Definition

Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.

+ References

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