Commitments and Contingencies - DownREIT LLCs (Details)	Dec. 31, 2022 property
Life Science JV \| Life Science
Loss Contingencies [Line Items]
Investment ownership percentage	49.00%
Indemnification Agreement
Loss Contingencies [Line Items]
Number of properties may be contributed in the agreement	29

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

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 https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant