Other Assets and Liabilities (Accounts Payable and Accrued Expenses) (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($) a	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2020 USD ($)
Other Assets and Liabilities [Line Items]
Condominium deposit liabilities	$ 343,517,000	$ 343,517,000			$ 309,884,000
Condominium deposit liabilities, Change		33,633,000
Construction payables	295,997,000	295,997,000			253,626,000
Construction payables, Change		42,371,000
Deferred income	68,548,000	68,548,000			66,656,000
Deferred income, Change		1,892,000
Accrued interest	45,561,000	45,561,000			37,007,000
Accrued interest, Change		8,554,000
Interest rate swap liabilities	39,827,000	39,827,000			51,920,000
Interest rate swap liabilities, Change		(12,093,000)
Tenant and other deposits	38,197,000	38,197,000			25,801,000
Tenant and other deposits, Change		12,396,000
Accounts payable and accrued expenses	31,786,000	31,786,000			28,589,000
Accounts payable and accrued expenses, Change		3,197,000
Accrued real estate taxes	27,878,000	27,878,000			38,863,000
Accrued real estate taxes, Change		(10,985,000)
Accrued payroll and other employee liabilities	22,674,000	22,674,000			27,419,000
Accrued payroll and other employee liabilities, Change		(4,745,000)
Other	11,860,000	11,860,000			12,493,000
Other, Change		(633,000)
Accounts payable and accrued expenses	925,845,000	925,845,000			$ 852,258,000
Accounts payable and accrued expenses, Change		73,587,000
Senior Notes due 2025 | Senior Notes
Other Assets and Liabilities [Line Items]
Face amount			$ 1,000,000,000.0	$ 1,300,000,000
Ward Village, the Tin Building, and the Summerlin and Bridgeland MPC developments
Other Assets and Liabilities [Line Items]
Construction payables, Change		78,200,000
Waiea
Other Assets and Liabilities [Line Items]
Construction payables, Change		21,000,000.0
Various projects
Other Assets and Liabilities [Line Items]
Construction payables, Change		$ (35,800,000)
Summerlin
Other Assets and Liabilities [Line Items]
Deposit received	$ 13,500,000
Area of land sold | a	216