COMMITMENTS AND CONTINGENCIES (Narrative) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) condominium_tower	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2020 USD ($)	Jun. 14, 2018 individual_or_entity
Commitments
Number of individuals or entities on petition | individual_or_entity						500
Letters of credit outstanding		$ 5,200,000	$ 15,400,000
Surety bonds outstanding		272,400,000	200,100,000
Contractual rental expense		$ 7,200,000	$ 8,500,000
Contractual rental expense				$ 9,700,000
Guarantor obligations, reserved percentage of residential units		20.00%
Guarantor obligations, number of open condominium towers | condominium_tower		3
Guarantor obligations, number of towers under construction | condominium_tower		2
Waiea
Commitments
Charge for repairs and remediation on alleged construction defects	$ 97,900,000
Total estimated repair costs		$ 115,400,000
Loss contingency accrual for estimated repair costs		$ 111,300,000
Downtown columbia | Guarantee Obligations
Commitments
Guarantee amount					$ 1,000,000.0