Business and Organization - Narratives (Details) ft² in Millions	9 Months Ended
Sep. 30, 2020 ft² property tenant	Dec. 31, 2019 property
Real Estate
Additional disclosures
Number of Properties	1,215
Square footage of real estate properties \| ft²	142.0
Number of tenants \| tenant	351
Lease term (years)	10 years 7 months 6 days
Occupancy rate	98.90%
Real Estate \| Operating properties
Additional disclosures
Number of Properties	20
Square footage of real estate properties \| ft²	1.4
Real Estate \| Self-storage
Additional disclosures
Number of Properties	19
Real Estate \| Hotel
Additional disclosures
Number of Properties	1	2
Investment Management \| Affiliated Entity \| Managed Programs
Additional disclosures
Number of tenants \| tenant	64
Occupancy rate	98.90%
Investment Management \| Affiliated Entity \| Managed Programs \| Built-to-suit
Additional disclosures
Number of Properties	12
Investment Management \| Operating properties \| Affiliated Entity \| Managed Programs
Additional disclosures
Number of Properties	72
Square footage of real estate properties \| ft²	5.9
Investment Management \| Net- lease properties \| Affiliated Entity \| Managed Programs
Additional disclosures
Number of Properties	51
Square footage of real estate properties \| ft²	10.2

Area of a real estate property.

No definition available.

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- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The occupancy rate of our owned real estate properties as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Other Business Disclosures

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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