Real Estate (Dispositions) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Real Estate [Line Items]
Real estate asset held for sale	$ 96,800		$ 14,500
Proceeds	165,200	$ 48,300	555,500
Income from sales of real estate	26,300	6,300	11,900
Income from sales of real estate	26,319	6,318	11,969
Net income from discontinued operations	8,500		224,700
Impairment of assets	678	5,791	10,948
Net Lease
Real Estate [Line Items]
Proceeds	37,900	42,400	469,400
Income from sales of real estate		6,100
Aggregate carrying value of property sold			220,400
Net income from discontinued operations	8,500		224,700
Non-recourse debt assumed by buyer			228,000
Net Lease \| Net income from discontinued operations
Real Estate [Line Items]
Income from sales of real estate			219,700
Net Lease Asset One
Real Estate [Line Items]
Proceeds		7,500
Impairment of assets		1,700
Operating Properties
Real Estate [Line Items]
Real estate asset held for sale	96,800		14,500
Proceeds	127,300	5,900	86,100
Income from sales of real estate	26,300	$ 200	11,900
Aggregate carrying value of property sold			73,100
Operating Properties \| Income from sales of real estate
Real Estate [Line Items]
Income from sales of real estate			$ 11,900
Commercial Real Estate
Real Estate [Line Items]
Real estate asset held for sale	96,800
Commercial Real Estate \| Income from sales of real estate
Real Estate [Line Items]
Income from sales of real estate	25,600
Residential Real Estate \| Income from sales of real estate
Real Estate [Line Items]
Income from sales of real estate	$ 700

Aggregate Carrying Value of Property Sold

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The difference between the carrying value and the sale price of real estate or properties held 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.

+ References

No definition available.

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- Definition

Sale of Property Nonrecourse Debt Assumed by Other Party

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Amount of difference between the carrying amount and the sales price of real estate properties sold as part of discontinued operations.

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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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

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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-Publisher FASB
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- Definition

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.

+ References

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