CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities:
Net income	$ 133,501	$ 142,390
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of deferred financing costs)	342,038	386,697
Distributions of income from partially owned entities	131,308	137,758
Equity in net income of partially owned entities	(72,207)	(83,775)
Net gains on disposition of wholly owned and partially owned assets	(64,592)	(35,384)
Stock-based compensation expense	33,247	22,887
Change in deferred tax liability	14,309	9,992
Straight-lining of rents	(4,770)	(45,835)
Amortization of interest rate cap premiums	4,225	66
Amortization of below-market leases, net	(4,083)	(3,788)
Net realized and unrealized (gain) loss on real estate fund investments	(1,861)	1,128
Return of capital from real estate fund investments	1,861	0
Write-off of lease receivables deemed uncollectible	0	782
Other non-cash adjustments	3,919	2,494
Changes in operating assets and liabilities:
Tenant and other receivables	(8,267)	(2,128)
Prepaid assets	(72,194)	33,995
Other assets	(72,201)	(22,706)
Lease liabilities	13,191	11,363
Accounts payable and accrued expenses	26,023	6,649
Other liabilities	33,428	(2,758)
Net cash provided by operating activities	436,875	559,827
Cash Flows from Investing Activities:
Proceeds from maturities of U.S. Treasury bills	468,598	349,461
Development costs and construction in progress	(432,439)	(557,884)
Additions to real estate	(155,080)	(120,124)
Proceeds from sales of real estate	123,550	253,958
Proceeds from repayment of participation in 150 West 34th Street mortgage loan	105,000	0
Investments in partially owned entities	(43,737)	(15,046)
Acquisitions of real estate and other	(33,145)	(2,000)
Distributions of capital from partially owned entities	18,837	20,566
Proceeds from sale of condominium units at 220 Central Park South	14,216	16,124
Purchase of U.S. Treasury bills	0	(794,793)
Net cash provided by (used in) investing activities	65,800	(849,738)
Cash Flows from Financing Activities:
Repayments of borrowings	(119,400)	(1,245,973)
Dividends paid on common shares / Distributions to Vornado	(71,950)	(304,896)
Dividends paid on preferred shares / Distributions to preferred unitholders	(46,587)	(46,587)
Repurchase of common shares/ Vornado Class A units owned by Vornado	(29,183)	0
Contributions from noncontrolling interests in consolidated subsidiaries	18,534	4,903
Distributions to noncontrolling interests	(9,489)	(68,716)
Deferred financing costs	(3,398)	(32,473)
Proceeds received from exercise of employee share options /Proceeds received from exercise of Vornado stock options and other	146	662
Repurchase of shares / Class A units related to stock compensation agreements and related tax withholdings and other	(25)	(85)
Proceeds from borrowings	0	1,029,773
Net cash used in financing activities	(261,352)	(663,392)
Net increase (decrease) in cash and cash equivalents and restricted cash	241,323	(953,303)
Cash and cash equivalents and restricted cash at beginning of period	1,021,157	1,930,351
Cash and cash equivalents and restricted cash at end of period	1,262,480	977,048
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	889,689	1,760,225
Restricted cash at beginning of period	131,468	170,126
Cash and cash equivalents and restricted cash at beginning of period	1,021,157	1,930,351
Cash and cash equivalents at end of period	1,000,362	845,423
Restricted cash at end of period	262,118	131,625
Cash and cash equivalents and restricted cash at end of period	1,262,480	977,048
Supplemental Disclosure of Cash Flow Information:
Cash payments for interest (excluding capitalized interest) and interest rate cap premiums	306,001	170,839
Cash payments for income taxes	8,728	6,919
Non-Cash Information:
Accrued capital expenditures included in accounts payable and accrued expenses	64,072	86,844
Redeemable Class A unit measurement adjustment	(58,159)	215,619
Write-off of fully depreciated assets	(46,164)	(52,475)
Initial investment in Pier 94 joint venture upon contribution of leasehold interest	50,090	0
Decrease in assets and liabilities resulting from the deconsolidation of Pier 94:
Real estate	21,693	0
Right-of-use assets	7,081	0
Lease liabilities	(20,692)	0
Change in fair value of consolidated interest rate hedges and other	2,433	200,838
Additional estimated lease liability arising from the recognition of right-of-use asset	0	350,000
Reclassification of assets held for sale (included in "other assets")	0	64,177
Reclassification of condominium units from "development costs and construction in progress" to "220 Central Park South condominium units ready for sale"	$ 0	$ 30,542