KW Unsecured Debt - Borrowings Under Credit Facilities (Details) - Line of Credit - Revolving Credit Facility - USD ($)			9 Months Ended
	Jun. 12, 2023	Mar. 25, 2020	Sep. 30, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Mortgage debt (excluding loan fees)			$ 145,700,000	$ 282,000,000.0
A&R Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 500,000,000
Maturity extension period	1 year
Maximum consolidated leverage ratio		65.00%
Minimum fixed charge coverage ratio		1.70
Fixed charge coverage ratio, measurement period		12 months
Minimum tangible net worth		$ 1,700,000,000
Covenant, percent of new equity offerings		50.00%
Maximum recourse leverage ratio		1.5
Maximum secured recourse leverage ratio		3.50%
Maximum liquidity value		$ 299,000,000
Maximum adjusted secured leverage ratio		55.00%
Minimum liquidity value		$ 75,000,000
Remaining borrowing capacity			354,300,000
Average outstanding amount			$ 224,300,000
A&R Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
A&R Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%