OTHER ASSETS AND LIABILITIES (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Prepaid Expenses and Other Assets
Total prepaid expenses and other assets	$ 314,266,000		$ 173,940,000
Increase in security and escrow deposits	10,500,000
Increase in uncertain tax position asset	6,600,000
Accounts Payable and Accrued Expenses
Total accounts payable and accrued expenses	516,461,000		283,991,000
Increase in accounts payable and accrued expenses	18,055,000	5,773,000
Increase in deferred income		14,100,000
Increase in accrued interest		11,300,000
Prepaid expenses and other assets
Prepaid Expenses and Other Assets
Special Improvement District receivable	39,777,000		39,688,000
Equipment, net of accumulated depreciation of $2.0 million and $0.7 million, respectively	20,662,000		21,978,000
Tenant incentives and other receivables	6,361,000		6,757,000
Federal income tax receivable	5,809,000		6,053,000
Prepaid expenses	9,461,000		4,744,000
Condominium deposits	137,407,000		12,405,000
Security and escrow deposits	38,577,000		28,082,000
Uncertain tax position asset	20,131,000		13,528,000
Intangibles	3,624,000		3,714,000
Other	3,731,000		6,588,000
Total prepaid expenses and other assets	314,266,000		173,940,000
Accumulated depreciation on other equipment	2,000,000		700,000
Increase in prepaid expenses and other assets	140,300,000
Increase in restricted condominium deposits	125,000,000
Accounts payable and accrued expenses
Accounts Payable and Accrued Expenses
Construction payables	194,197,000		106,741,000
Accounts payable and accrued expenses	34,687,000		46,998,000
Condominium deposits	137,407,000		12,405,000
Membership deposits	20,908,000		24,830,000
Deferred income	33,044,000		18,963,000
Accrued interest	28,793,000		17,463,000
Accrued real estate taxes	9,860,000		8,581,000
Tenant and other deposits	16,768,000		9,490,000
Insurance reserve			1,417,000
Accrued payroll and other employee liabilities	16,151,000		15,666,000
Special Assessment	2,603,000		2,603,000
Interest rate swap	3,195,000		4,164,000
Other	16,536,000		12,239,000
Total accounts payable and accrued expenses	516,461,000		283,991,000
Increase in accounts payable and accrued expenses	232,500,000
Increase in condominium deposits	125,000,000
Increase in construction payable	87,500,000
Ward Village
Prepaid Expenses and Other Assets
Number of new market rate towers	2
Below-market ground leases | Prepaid expenses and other assets
Prepaid Expenses and Other Assets
Net carrying amount	19,748,000		20,002,000
Above-market tenant leases | Prepaid expenses and other assets
Prepaid Expenses and Other Assets
Net carrying amount	941,000		1,095,000
In-place value tenant leases | Prepaid expenses and other assets
Prepaid Expenses and Other Assets
Net carrying amount	8,037,000		9,306,000
Above-market ground leases | Accounts payable and accrued expenses
Accounts Payable and Accrued Expenses
Net carrying amount	$ 2,312,000		$ 2,431,000