KW UNSECURED DEBT - Borrowings Under Credit Facilities (Details) - Revolving Credit Facility - Line of Credit - USD ($)		12 Months Ended
	Mar. 25, 2020	Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Debt (excluding loan fees)		$ 282,000,000.0	$ 75,000,000.0
A&R Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity		500,000,000
Maturity of extension	1 year
Maximum consolidated leverage ratio	65.00%
Fixed charge coverage ratio measurement period	12 months
Covenant, percent of new equity offerings	50.00%
Maximum secured recourse leverage multiplier	1.5
Remaining borrowing capacity		218,000,000
Average outstanding amount		208,000,000
Minimum | A&R Facility
Line of Credit Facility [Line Items]
Fixed charge coverage ratio	1.70
Tangible net worth	$ 1,700,000,000
Liquidity	$ 75,000,000	$ 282,000,000
Maximum | A&R Facility
Line of Credit Facility [Line Items]
Secured recourse leverage ratio	3.50%
Liquidity	$ 299,000,000
Adjusted secured leverage ratio	55.00%
LIBOR | Minimum | A&R Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)	1.75%
LIBOR | Maximum | A&R Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)	2.50%