Equity Securities, FV-NI, Unfunded Commitments

No definition available.

Name:	csr_EquitySecuritiesFVNIUnfundedCommitments
Namespace Prefix:	csr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of consecutive trading days for valuation.

+ References

No definition available.

+ Details

Name:	csr_NumberOfConsecutiveTradingDaysForValuation
Namespace Prefix:	csr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Real Estate Technology Venture Funds With Unfunded Commitments

+ References

No definition available.

+ Details

Name:	csr_NumberOfRealEstateTechnologyVentureFundsWithUnfundedCommitments
Namespace Prefix:	csr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The redemption value of UPREIT Units during the period.

+ References

No definition available.

+ Details

Name:	csr_RedemptionValueOfUpreitUnits
Namespace Prefix:	csr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of limited partners' units to be redeemed in exchange for a number of common shares upon exercise of the redemption option by the limited partners.

+ References

No definition available.

+ Details

Name:	csr_Redemptionbasis
Namespace Prefix:	csr_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_RealEstatePropertiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 31, 2022 apartmentCommunity	Dec. 31, 2021 USD ($)	Dec. 31, 2022 apartmentHome	Dec. 31, 2022 apartmentProperty	Dec. 31, 2022 USD ($)	Dec. 31, 2022 realEstateTechnologyVentureFund
Real Estate Properties [Line Items]
Number of properties	84			37
Number of apartment homes (approximately) \| apartmentHome			6,758
Redemption basis	1
Number of consecutive trading days for valuation	10 days	10 days
Aggregate redemption value of units of operating partnership owned by limited partners		$ 90.9			$ 58.0
Number of real estate technology venture funds with unfunded commitments \| realEstateTechnologyVentureFund						2
Fair Value, Recurring
Real Estate Properties [Line Items]
Equity Securities, FV-NI, Unfunded Commitments					$ 1.4