The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

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Real Estate Investments and Related Intangibles - Property Dispositions and Real Estate Assets Held for Sale (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) property	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) property	Sep. 30, 2019 USD ($) property	Dec. 31, 2019 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds after debt assumptions and closing costs			$ 346,675	$ 846,023
Gain on disposition of real estate and real estate assets held for sale, net	$ 42,814	$ 18,520	$ 76,858	251,106
Number of properties classified held for sale \| property	2		2		5
Carrying value of properties classified as held for sale	$ 1,900		$ 1,900
Gain (loss) related to held for sale			$ (300)	$ (800)
Consolidated Property Dispositions, 2020 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties disposed \| property			63
Number of consolidated properties sold \| property			3
Aggregate proceeds			$ 376,200
Company's share of proceeds			373,400
Proceeds after debt assumptions and closing costs			346,700
Gain on disposition of real estate and real estate assets held for sale, net			$ 77,200
Consolidated Property Dispositions, 2019 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties disposed \| property				107
Number of real estate properties sold through foreclosure by lender \| property				1
Aggregate proceeds				$ 926,000
Company's share of proceeds				905,900
Proceeds after debt assumptions and closing costs				846,000
Gain on disposition of real estate and real estate assets held for sale, net				$ 251,900
Red Lobster [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties disposed \| property			4	33
Land [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Carrying value of properties classified as held for sale	500		$ 500
Building Fixtures and Improvements [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Carrying value of properties classified as held for sale	$ 1,500		$ 1,500
Industrial Partnership [Member] \| Consolidated Property Dispositions, 2019 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of consolidated properties sold \| property				6