Exchange Accommodation Titleholder, Real Estate, Carrying Value

No definition available.

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- Definition

Number Of Properties Acquired

+ References

No definition available.

+ Details

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- Definition

Represents number of unconsolidated joint ventures between entity and an institutional capital partner.

+ References

No definition available.

+ Details

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- Definition

The number of VIE borrowers in which the entity has invested in marketable debt securities.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Represents the number of controlling ownership interest entities, in which the company holds the interest and is the managing member of the partnership.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Period Type:	instant

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- 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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Balance Type:	na
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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123419778&loc=SL6759159-111685

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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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Variable Interest Entities - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2021 USD ($) joint_venture	Mar. 31, 2022 USD ($) joint_venture	Mar. 31, 2021 property	Dec. 31, 2021 USD ($) joint_venture property
Variable Interest Entity [Line Items]
Exchange accommodation titleholder, real estate, carrying value \| $	$ 77	$ 43		$ 77
Unconsolidated Variable Interest Entities
Variable Interest Entity [Line Items]
Number of unconsolidated joint ventures (in joint ventures)	2	2		2
Number of VIE borrowers with marketable debt securities (in joint ventures)	1	1		1
Ventures V
Variable Interest Entity [Line Items]
VIE ownership percentage		51.00%
Life Science JV
Variable Interest Entity [Line Items]
VIE ownership percentage		99.00%
MSREI JV
Variable Interest Entity [Line Items]
VIE ownership percentage		51.00%
DownREIT Partnerships
Variable Interest Entity [Line Items]
Number of controlling ownership interest entities as a managing member		7
Life Science \| Needham Land Parcel JV
Variable Interest Entity [Line Items]
Investment ownership percentage	38.00%	38.00%		38.00%
Payments to acquire equity method investment \| $	$ 13
Medical Office Buildings
Variable Interest Entity [Line Items]
Number of properties acquired \| property			2	2