CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Real estate, at cost:
Land	$ 2,457,589	$ 2,451,828
Buildings and improvements	9,887,787	9,804,204
Development costs and construction in progress	1,257,886	933,334
Leasehold improvements and equipment	129,385	125,389
Total	13,732,647	13,314,755
Less accumulated depreciation and amortization	(3,698,582)	(3,470,991)
Real estate, net	10,034,065	9,843,764
Right-of-use assets	679,119	684,380
Cash and cash equivalents	1,000,362	889,689
Restricted cash	262,118	131,468
Investments in U.S. Treasury bills	0	471,962
Tenant and other receivables	88,438	81,170
Investments in partially owned entities	2,670,782	2,665,073
220 Central Park South condominium units ready for sale	40,198	43,599
Receivable arising from the straight-lining of rents	697,486	694,972
Deferred leasing costs, net of accumulated amortization of $256,337 and $237,395	355,307	373,555
Identified intangible assets, net of accumulated amortization of $99,770 and $98,139	130,086	139,638
Other assets	494,582	474,105
Assets	16,452,543	16,493,375
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Mortgages payable, net	5,714,761	5,829,018
Senior unsecured notes, net	1,193,362	1,191,832
Unsecured term loan, net	794,212	793,193
Unsecured revolving credit facilities	575,000	575,000
Lease liabilities	728,468	735,969
Accounts payable and accrued expenses	452,853	450,881
Deferred revenue	34,083	39,882
Deferred compensation plan	100,485	96,322
Other liabilities	316,094	268,166
Total liabilities	9,909,318	9,980,263
Commitments and contingencies
Redeemable noncontrolling interests:
Total redeemable noncontrolling interests	474,004	436,732
Shareholders' equity:
Preferred shares of beneficial interest: no par value per share; authorized 110,000,000 shares; issued and outstanding 48,792,902 shares	1,182,459	1,182,459
Common shares of beneficial interest: $0.04 par value per share; authorized 250,000,000 shares; issued and outstanding 190,321,756 and 191,866,880 shares	7,592	7,654
Additional capital	8,341,810	8,369,228
Earnings less than distributions	(3,891,266)	(3,894,580)
Accumulated other comprehensive income	170,182	174,967
Total shareholders' / partners' equity	5,810,777	5,839,728
Noncontrolling interests in consolidated subsidiaries	258,444	236,652
Total equity	6,069,221	6,076,380
Total liabilities, redeemable noncontrolling interests / partnership units and equity	16,452,543	16,493,375
Partnership Interest
Redeemable noncontrolling interests:
Class A units - 16,927,110 and 14,416,891 units outstanding	411,640	345,157
Series D cumulative redeemable preferred units - 141,400 units outstanding	3,535	3,535
Total redeemable noncontrolling interests	415,175	348,692
Redeemable noncontrolling interest in a consolidated subsidiary
Redeemable noncontrolling interests:
Total redeemable noncontrolling interests	$ 58,829	$ 88,040