Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
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- Definition

Amount of assets pledged to secure a debt instrument.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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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

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Weighted average interest rate of debt outstanding.

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- Definition

Amount of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property.

+ References

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

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Debt - Mortgage Notes Payable (Details)	12 Months Ended
Debt - Mortgage Notes Payable (Details)	Dec. 31, 2019 USD ($) property	Dec. 31, 2018 USD ($)	Apr. 12, 2018 property
Debt Instrument [Line Items]
Encumbered Properties \| property	3,858
Weighted-Average Interest Rate	4.30%
Weighted-Average Years to Maturity	4 years 9 months 18 days
Unconsolidated Joint Ventures debt outstanding	$ 269,300,000	$ 0
Mortgages [Member]
Debt Instrument [Line Items]
Encumbered Properties \| property	355		1
Gross Carrying Value of Collateralized Properties	$ 3,012,566,000
Outstanding Balance	$ 1,529,057,000	$ 1,917,132,000
Weighted-Average Interest Rate	5.05%
Mortgages [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted-Average Years to Maturity	2 years 9 months 18 days
Mortgages [Member] \| Fixed-rate debt [Member]
Debt Instrument [Line Items]
Encumbered Properties \| property	354
Gross Carrying Value of Collateralized Properties	$ 2,978,246,000
Outstanding Balance	$ 1,514,666,000
Weighted-Average Interest Rate	5.05%
Mortgages [Member] \| Fixed-rate debt [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted-Average Interest Rate	3.57%
Weighted-Average Years to Maturity	2 years 9 months 18 days
Mortgages [Member] \| Variable-rate debt [Member]
Debt Instrument [Line Items]
Encumbered Properties \| property	1
Gross Carrying Value of Collateralized Properties	$ 34,320,000
Outstanding Balance	$ 14,391,000
Weighted-Average Interest Rate	4.99%
Mortgages [Member] \| Variable-rate debt [Member] \| Weighted Average [Member]
Debt Instrument [Line Items]
Weighted-Average Years to Maturity	18 days