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Intangible Assets and Liabilities - Weighted Average Amortization Period for Intangible Assets and Liabilities (Details) - Weighted Average	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, below-market leases	13 years 4 months 24 days	13 years 2 months 12 days
In-place leases
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, intangible assets	11 years 1 month 6 days	10 years 6 months
Above-market leases
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, intangible assets	12 years 7 months 6 days	15 years 3 months 18 days
Assembled workforce
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, intangible assets	2 years	3 years

X

- Definition

Below Market Lease, Remaining Amortization Period

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959

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