Vornado Realty Trust (VNO) 10-Q 4 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	VORNADO REALTY TRUST
Entity Central Index Key	899689
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	188,272,702
Entity Well Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Trading Symbol	vno

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Real estate, at cost:
Land	$3,914,401	$3,861,913
Buildings and improvements	11,881,228	11,705,749
Development costs and construction in progress	1,157,180	1,128,037
Leasehold improvements and equipment	127,534	126,659
Total	17,080,343	16,822,358
Less accumulated depreciation and amortization	-3,248,078	-3,161,633
Real estate, net	13,832,265	13,660,725
Cash and cash equivalents	1,067,568	1,198,477
Restricted cash	198,672	176,204
Marketable securities	184,991	206,323
Tenant and other receivables, net of allowance for doubtful accounts of $12,456 and $12,210	110,477	109,998
Investments in partially owned entities	1,408,214	1,246,496
Real estate fund investments	554,426	513,973
Receivable arising from the straight-lining of rents, net of allowance of $3,083 and $3,188	816,661	787,271
Deferred leasing and financing costs, net of accumulated amortization of $289,589 and $281,109	478,507	475,158
Identified intangible assets, net of accumulated amortization of $200,330 and 199,821	229,579	225,155
Assets related to discontinued operations	35,342	2,238,474
Other assets	344,349	410,066
Assets	19,261,051	21,248,320
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Mortgages payable	8,316,793	8,263,165
Senior unsecured notes	847,332	1,347,159
Revolving credit facility debt	400,000	0
Accounts payable and accrued expenses	432,970	447,745
Deferred revenue	346,026	358,613
Deferred compensation plan	121,530	117,284
Liabilities related to discontinued operations	11,354	1,511,362
Other liabilities	436,608	375,830
Total liabilities	10,912,613	12,421,158
Commitments and contingencies
Redeemable noncontrolling interests:
Class A units - 11,640,982 and 11,356,550 units outstanding	1,303,790	1,336,780
Series D cumulative redeemable preferred units - 1 unit outstanding	1,000	1,000
Total redeemable noncontrolling interests	1,304,790	1,337,780
Vornado shareholders' equity:
Preferred shares of beneficial interest: no par value per share; authorized 110,000,000 shares; issued and outstanding 52,678,939 shares	1,277,014	1,277,026
Common shares of beneficial interest: $.04 par value per share; authorized 250,000,000 shares; issued and outstanding 188,272,702 and 187,887,498 shares	7,509	7,493
Additional capital	6,935,205	6,873,025
Earnings less than distributions	-2,006,439	-1,505,385
Accumulated other comprehensive income	72,609	93,267
Total Vornado shareholders' equity	6,285,898	6,745,426
Noncontrolling interests in consolidated subsidiaries	757,750	743,956
Total equity	7,043,648	7,489,382
Total liabilities, redeemable noncontrolling interests and equity	$19,261,051	$21,248,320

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
ASSETS
Tenant and other receivables, allowance for doubtful accounts (in US dollars)	$12,456	$12,210
Receivable arising from the straight-lining of rents, allowance (in US dollars)	3,083	3,188
Deferred leasing and financing costs, accumulated amortization (in US dollars)	289,589	281,109
Identified intangible assets, accumulated amortization (in US dollars)	$200,330	$199,821
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Preferred Stock, Par Value Per Share	$0	$0
Preferred shares of beneficial interest: authorized shares	110,000,000	110,000,000
Preferred shares of beneficial interest: issued shares	52,678,939	52,678,939
Preferred shares of beneficial interest: outstanding shares	52,678,939	52,678,939
Common shares of beneficial interest: par value per share (in dollars per share)	$0.04	$0.04
Common shares of beneficial interest: authorized shares	250,000,000	250,000,000
Common shares of beneficial interest: issued shares	188,272,702	187,887,498
Common shares of beneficial interest: outstanding shares	188,272,702	187,887,498
Common Class A [Member]
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Outstanding Partnership Units held by Third Parties	11,640,982	11,356,550
Cumulative Redeemable Preferred Unit [Member]
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY
Outstanding Partnership Units held by Third Parties	1	1

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
REVENUES:
Property rentals	$500,274	$467,140
Tenant expense reimbursements	66,921	59,301
Fee and other income	39,607	35,940
Total revenues	606,802	562,381
EXPENSES:
Operating	254,493	236,561
Depreciation and amortization	124,122	131,792
General and administrative	58,492	47,502
Acquisition and transaction related costs	1,981	1,285
Total expenses	439,088	417,140
Operating income	167,714	145,241
(Loss) income from partially owned entities	-2,405	1,979
Income from real estate fund investments	24,089	18,148
Interest and other investment income, net	10,792	11,850
Interest and debt expense	-91,674	-96,312
Net gain on disposition of wholly owned and partially owned assets	1,860	9,635
Income before income taxes	110,376	90,541
Income tax expense	-971	-851
Income from continuing operations	109,405	89,690
Income from discontinued operations	15,841	8,466
Net income	125,246	98,156
Less net income attributable to noncontrolling interests in:
Consolidated subsidiaries	-15,882	-11,579
Operating Partnership	-5,287	-3,860
Net income attributable to Vornado	104,077	82,717
Preferred share dividends	-19,484	-20,368
NET INCOME attributable to common shareholders	$84,593	$62,349
INCOME PER COMMON SHARE - BASIC:
Income from continuing operations, net (in dollars per share)	$0.37	$0.29
Income from discontinued operations, net (in dollars per share)	$0.08	$0.04
Net income per common share (in dollars per share)	$0.45	$0.33
Weighted average shares outstanding	187,999	187,307
INCOME PER COMMON SHARE - DILUTED:
Income from continuing operations, net (in dollars per share)	$0.37	$0.29
Income from discontinued operations, net (in dollars per share)	$0.08	$0.04
Net income per common share (in dollars per share)	$0.45	$0.33
Weighted average shares outstanding	189,336	188,240
DIVIDENDS PER COMMON SHARE (in dollars per share)	$0.63	$0.73

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net income	$125,246	$98,156
Other comprehensive income (loss):
Change in unrealized net (loss) gain on available-for-sale securities	-21,332	13,125
Pro rata share of other comprehensive income (loss) of nonconsolidated subsidiaries	157	-8,286
Change in value of interest rate swap and other	-771	1,611
Comprehensive income	103,300	104,606
Less comprehensive income attributable to noncontrolling interests	-19,881	-15,800
Comprehensive income attributable to Vornado	$83,419	$88,806

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Equity (USD $)	Total	Real estate fund investments	All other except real estate fund investments	Preferred Shares	Common Shares	Additional Capital	Earnings Less Than Distributions	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests in Consolidated Subsidiaries	Non-controlling Interests in Consolidated Subsidiaries	Non-controlling Interests in Consolidated Subsidiaries
In Thousands, unless otherwise specified										Real estate fund investments	All other except real estate fund investments
Beginning balance, Value at Dec. 31, 2013	$7,594,744			$1,277,225	$7,469	$7,143,840	($1,734,839)	$71,537	$829,512
Beginning balance, Shares at Dec. 31, 2013				52,683	187,285
Net income attributable to Vornado	82,717						82,717
Net income attributable to noncontrolling interests in consolidated subsidiaries	11,579	10,849							11,579
Dividends on common shares, Value	-136,761						-136,761
Dividends on preferred shares, Value	-20,368						-20,368
Common shares issued:
Upon redemption of Class A units, at redemption value, Shares					55
Upon redemption of Class A units, at redemption value, Value	5,156				2	5,154
Under employees' share option plan, Shares					60
Under employees' share option plan, Value	3,230				2	3,228	0
Under dividend reinvestment plan, Shares					5
Under dividend reinvestment plan, Value	446				0	446
Distribution:
Distributions	-8,383	-1,950	-142							-1,950	-142
Deferred compensation shares and options, Shares					7
Deferred compensation shares and options, Value	1,779				1	2,118	-340
Change in unrealized net (loss) gain on available-for-sale securities	13,125							13,125
Pro rata share of other comprehensive income (loss) of nonconsolidated subsidiaries	-8,286							-8,286
Change in value of interest rate swap	1,610							1,610
Adjustments to carry redeemable Class A units at redemption value	-136,937					-136,937
Redeemable noncontrolling interests' share of above adjustments	-361							-361
Other	-254					-238	-18	1	1
Ending balance, Value at Mar. 31, 2014	7,409,327			1,277,225	7,474	7,017,611	-1,809,609	77,626	839,000
Ending balance, Shares at Mar. 31, 2014				52,683	187,412
Beginning balance, Value at Dec. 31, 2014	7,489,382			1,277,026	7,493	6,873,025	-1,505,385	93,267	743,956
Beginning balance, Shares at Dec. 31, 2014				52,679	187,887
Net income attributable to Vornado	104,077						104,077
Net income attributable to noncontrolling interests in consolidated subsidiaries	15,882	13,539							15,882
Distribution of Urban Edge Properties	-464,603						-464,262		-341
Dividends on common shares, Value	-118,447						-118,447
Dividends on preferred shares, Value	-19,484						-19,484
Common shares issued:
Upon redemption of Class A units, at redemption value, Shares					210
Upon redemption of Class A units, at redemption value, Value	23,493				8	23,485
Under employees' share option plan, Shares					165
Under employees' share option plan, Value	9,100				7	11,672	-2,579
Under dividend reinvestment plan, Shares					3
Under dividend reinvestment plan, Value	338					338
Contributions:
Contributions		51,350								51,350
Distribution:
Distributions	-7,280	-52,882	-125							-52,882	-125
Conversion Of Series A preferred shares to common shares, Shares					1
Conversion of Series A preferred shares to common shares, Value				-12		12
Deferred compensation shares and options, Shares					7
Deferred compensation shares and options, Value	966				1	1,324	-359
Change in unrealized net (loss) gain on available-for-sale securities	-21,332							-21,332
Pro rata share of other comprehensive income (loss) of nonconsolidated subsidiaries	157							157
Change in value of interest rate swap	-776							-776
Adjustments to carry redeemable Class A units at redemption value	25,349					25,349
Redeemable noncontrolling interests' share of above adjustments	1,288							1,288
Other	-85							5	-90
Ending balance, Value at Mar. 31, 2015	$7,043,648			$1,277,014	$7,509	$6,935,205	($2,006,439)	$72,609	$757,750
Ending balance, Shares at Mar. 31, 2015				52,679	188,273

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities:
Net income	$125,246,000	$98,156,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of deferred financing costs)	131,112,000	153,869,000
Return of capital from real estate fund investments	72,208,000	0
Net gains on sale of real estate and other	-32,243,000	0
Straight-lining of rental income	-29,474,000	-13,236,000
Net realized and unrealized gains on real estate fund investments	-17,639,000	-14,169,000
Distributions of income from partially owned entities	15,874,000	12,966,000
Other non-cash adjustments	15,865,000	11,885,000
Amortization of below-market leases, net	-12,754,000	-12,144,000
(Loss) income from partially owned entities	2,405,000	-1,979,000
Net gain on disposition of wholly owned and partially owned assets	-1,860,000	-9,635,000
Impairment losses	256,000	20,842,000
Changes in operating assets and liabilities:
Real estate fund investments	-95,022,000	-123,000
Accounts receivable, net	975,000	-7,624,000
Prepaid assets	62,658,000	53,841,000
Other assets	-13,093,000	-18,297,000
Accounts payable and accrued expenses	-12,691,000	31,554,000
Other liabilities	-17,307,000	3,225,000
Net cash provided by operating activities	194,516,000	309,131,000
Cash Flows from Investing Activities:
Proceeds from sales of real estate and related investments	334,725,000	120,270,000
Development costs and construction in progress	-88,052,000	-90,653,000
Additions to real estate	-54,466,000	-53,103,000
Acquisitions of real estate and other	-49,878,000	0
Investments in partially owned entities	-23,912,000	-16,633,000
Proceeds from repayments of mortgage and mezzanine loans receivable and other	16,763,000	69,347,000
Distributions of capital from partially owned entities	13,409,000	1,277,000
Restricted cash	1,282,000	52,256,000
Net cash provided by investing activities	149,871,000	82,761,000
Cash Flows from Financing Activities:
Repayments of borrowings	-907,431,000	-233,198,000
Proceeds from borrowings	800,000,000	600,000,000
Cash included in the spin-off of Urban Edge Properties	-225,000,000	0
Dividends paid on common shares	-118,447,000	-136,761,000
Distributions to noncontrolling interests	-60,287,000	-10,474,000
Contributions from noncontrolling interests	51,350,000	0
Dividends paid on preferred shares	-19,484,000	-20,368,000
Proceeds received from exercise of employee share options	12,018,000	3,676,000
Debt issuance costs	-5,076,000	-20,752,000
Repurchase of shares related to stock compensation agreements and/or related tax withholdings	-2,939,000	-578,000
Net cash (used in) provided by financing activities	-475,296,000	181,545,000
Net (decrease) increase in cash and cash equivalents	-130,909,000	573,437,000
Cash and cash equivalents at beginning of period	1,198,477,000	583,290,000
Cash and cash equivalents at end of period	1,067,568,000	1,156,727,000
Supplemental Disclosure Of Cash Flow Information:
Cash payments for interest, excluding capitalized interest of $8,479 and $13,622	91,702,000	100,209,000
Cash payments for income taxes	2,175,000	1,214,000
Non-cash distribution of Urban Edge Properties:
Assets	1,722,263,000	0
Liabilities	-1,482,660,000	0
Equity	-239,603,000	0
Transfer of interest in real estate to Pennsylvania Real Estate Investment Trust	-145,313,000	0
Accrued capital expenditures included in accounts payable and accrued expenses	87,232,000	74,424,000
Financing assumed in acquisitions	62,000,000	0
Adjustments to carry redeemable Class A units at redemption value	25,349,000	-136,937,000
Receipt of security deposits included in restricted cash and other liabilities	42,346,000	0
Write-off of fully depreciated assets	-18,790,000	-67,204,000
Elimination of a mortgage and mezzanine loan asset and liability	0	59,375,000
Acquisitions [Member]
Non-cash distribution of Urban Edge Properties:
Like-kind exchange of real estate	57,722,000	0
Dispositions [Member]
Non-cash distribution of Urban Edge Properties:
Like-kind exchange of real estate	($38,822,000)	$0

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parentheticals) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Cash Flows [Abstract]
Cash paid for capitalized interest	$8,479	$13,622

Organization

Organization	3 Months Ended
	Mar. 31, 2015
Organization and Business [Abstract]
Organization	1. Organization
	Vornado Realty Trust (“Vornado”) is a fully-integrated real estate investment trust (“REIT”) and conducts its business through, and substantially all of its interests in properties are held by, Vornado Realty L.P., a Delaware limited partnership (the “Operating Partnership”). Vornado is the sole general partner of, and owned approximately 93.9% of the common limited partnership interest in, the Operating Partnership at March 31, 2015. All references to “we,” “us,” “our,” the “Company” and “Vornado” refer to Vornado Realty Trust and its consolidated subsidiaries, including the Operating Partnership.
	On January 15, 2015, we completed the spin-off of substantially all of our retail segment comprised of 79 strip shopping centers, three malls, a warehouse park and $225,000,000 of cash to Urban Edge Properties (“UE”) (NYSE: UE). As part of this transaction, we retained 5,717,184 UE operating partnership units (5.4% ownership interest). We are providing transition services to UE for an initial period of up to two years, including information technology, human resources, tax and financial reporting. UE is providing us with leasing and property management services for (i) the Monmouth Mall, (ii) certain small retail properties that we plan to sell, and (iii) our affiliate, Alexander's, Inc. (NYSE: ALX), Rego Park retail assets. Steven Roth, our Chairman and Chief Executive Officer is a member of the Board of Trustees of UE. The spin-off distribution was effected by Vornado distributing one UE common share for every two Vornado common shares. Beginning in the first quarter of 2015, the historical financial results of UE are reflected in our consolidated financial statements as discontinued operations for all periods presented.

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Basis of Presentation and Significant Accounting Policies [Abstract]
Basis Of Presentation	2. Basis of Presentation
	The accompanying consolidated financial statements are unaudited and include the accounts of Vornado and its consolidated subsidiaries, including the Operating Partnership. All intercompany amounts have been eliminated. In our opinion, all adjustments (which include only normal recurring adjustments) necessary to present fairly the financial position, results of operations and changes in cash flows have been made. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted. These condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q of the SEC and should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K, as amended, for the year ended December 31, 2014, as filed with the SEC.
	We have made estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. The results of operations for the three months ended March 31, 2015 are not necessarily indicative of the operating results for the full year.
	Certain prior year balances have been reclassified in order to conform to the current period presentation. Beginning in the three months ended March 31, 2015, the Company classified signage revenue within “property rentals”.  For the three months ended March 31, 2014, $9,300,000 related to signage revenue has been reclassified from “fee and other income” to “property rentals” to conform to the current period presentation.

Recently_Issued_Accounting_Lit

Recently Issued Accounting Literature	3 Months Ended
	Mar. 31, 2015
Recently Issued Accounting Literature [Abstract]
Recently Issued Accounting Literature	3. Recently Issued Accounting Literature
	In April 2014, the Financial Accounting Standards Board (“FASB”) issued an update (“ASU 2014-08”) Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity to ASC Topic 205, Presentation of Financial Statements and ASC Topic 360, Property Plant and Equipment. Under ASU 2014-08, only disposals that represent a strategic shift that has (or will have) a major effect on the entity's results and operations would qualify as discontinued operations. In addition, ASU 2014-08 expands the disclosure requirements for disposals that meet the definition of a discontinued operation and requires entities to disclose information about disposals of individually significant components that do not meet the definition of discontinued operations. ASU 2014-08 is effective for interim and annual reporting periods in fiscal years that began after December 15, 2014. Upon adoption of this standard on January 1, 2015, individual properties sold in the ordinary course of business are not expected to qualify as discontinued operations. The financial results of UE and certain other retail assets are reflected in our consolidated financial statements as discontinued operations for all periods presented (see Note 8 – Dispositions).
	In May 2014, the FASB issued an update ("ASU 2014-09") establishing ASC Topic 606, Revenue from Contracts with Customers. ASU 2014-09 establishes a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most of the existing revenue recognition guidance. ASU 2014-09 requires an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services and also requires certain additional disclosures. ASU 2014-09 is effective for interim and annual reporting periods in fiscal years that begin after December 15, 2016. We are currently evaluating the impact of the adoption of ASU 2014-09 on our consolidated financial statements.
	In June 2014, the FASB issued an update (“ASU 2014-12”) to ASC Topic 718, Compensation – Stock Compensation. ASU 2014-12 requires an entity to treat performance targets that can be met after the requisite service period of a share based award has ended, as a performance condition that affects vesting. ASU 2014-12 is effective for interim and annual reporting periods in fiscal years that begin after December 15, 2015. We are currently evaluating the impact of the adoption of ASU 2014-12 on our consolidated financial statements.
	In February 2015, the FASB issued an update (“ASU 2015-02”) Amendments to the Consolidation Analysis to ASC Topic 810, Consolidation. ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. Specifically, the amendments: (i) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities ("VIEs") or voting interest entities, (ii) eliminate the presumption that a general partner should consolidate a limited partnership, (iii) affect the consolidated analysis of reporting entities that are involved with VIEs, and (iv) provide a scope exception for certain entities. ASU 2015-02 is effective for interim and annual reporting periods beginning after December 15, 2015. We are currently evaluating the impact of the adoption of ASU 2015-02 on our consolidated financial statements.
	In April 2015, the FASB issued an update (“ASU 2015-03”) Simplifying the Presentation of Debt Issuance Costs to ASC Topic 835, Interest. ASU 2015-03 requires that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of the debt liability to which they relate, consistent with debt discounts, as opposed to being presented as assets. ASU 2015-03 is effective for interim and annual reporting periods in fiscal years that begin after December 15, 2015. The adoption of this update on January 1, 2016 will not have a material impact on our consolidated financial statements.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions	4. Acquisitions
	On January 20, 2015, we and one of the Fund's limited partners co-invested with the Fund to buy out the Fund's joint venture partner's 57% interest in the Crowne Plaza Times Square Hotel (see Note 5 – Vornado Capital Partners Real Estate Fund).
	On March 18, 2015, we acquired the Center Building, a 437,000 square foot office building, located at 33-00 Northern Boulevard in Long Island City, New York, for $142,000,000, including the assumption of an existing $62,000,000, 4.43% mortgage maturing in October 2018.
	As of March 31, 2015, we have made a $25,000,000 non-refundable deposit related to an agreement to acquire a property in the Penn Plaza submarket in Manhattan for $355,000,000.
	On April 8, 2015, we made an $11,000,000 refundable contribution to a joint venture, in which we will have a 55% interest. The joint venture plans to develop a 173,000 square foot Class-A office building, located on the western side of the High Line at 510 West 22nd Street.

Vornado_Capital_Partners_Real_

Vornado Capital Partners Real Estate Fund (the "Fund")	3 Months Ended
	Mar. 31, 2015
Real Estate Fund [Abstract]
Vornado Capital Partners Real Estate Fund (the "Fund")	5. Vornado Capital Partners Real Estate Fund (the “Fund”)
	We are the general partner and investment manager of the Fund, which has an eight-year term and a three-year investment period that ended in July 2013. During the investment period, the Fund was our exclusive investment vehicle for all investments that fit within its investment parameters, as defined. The Fund is accounted for under ASC 946, Financial Services – Investment Companies and its investments are reported on its balance sheet at fair value, with changes in value each period recognized in earnings. We consolidate the accounts of the Fund into our consolidated financial statements, retaining the fair value basis of accounting.
	On January 20, 2015, we and one of the Fund's limited partners co-invested with the Fund to buy out the Fund's joint venture partner's 57% interest in the Crowne Plaza Times Square Hotel (the “Co-Investment”). The purchase price for the 57% interest was approximately $95,000,000 (our share $39,000,000) which valued the property at approximately $480,000,000. The property is encumbered by a newly placed $310,000,000 mortgage loan bearing interest at LIBOR plus 2.80% which matures in December 2018 with a one-year extension option. Our aggregate ownership interest in the property increased to 33% from 11%. The Co-Investment is included as a component of “real estate fund investments” on our consolidated balance sheets.
	On March 25, 2015, the Fund completed the sale of 520 Broadway in Santa Monica, CA for $91,650,000. The Fund realized a $24,705,000 net gain over the holding period.
	At March 31, 2015, we had six investments with an aggregate fair value of $554,426,000, or $169,832,000 in excess of cost, and had remaining unfunded commitments of $102,324,000, of which our share was $25,581,000. Below is a summary of income from the Fund for the three months ended March 31, 2015 and 2014.
			For the Three Months
	(Amounts in thousands)		Ended March 31,
			2015		2014
	Net investment income		$	6,450	$	3,979
	Net realized gains on exited investments			24,705		-
	Previously recorded unrealized gains on exited investments			-23,279		-
	Net unrealized gains on held investments			16,213		14,169
	Income from real estate fund investments			24,089		18,148
	Less income attributable to noncontrolling interests			-13,539		-10,849
	Income from real estate fund investments attributable to Vornado (1)		$	10,550	$	7,299
	___________________________________
	-1	Excludes property management, leasing and development fees of $704 and $618 for the three months ended March 31, 2015 and 2014, respectively, which are included as a component of "fee and other income" on our consolidated statements of income.

Marketable_Securities

Marketable Securities	3 Months Ended
	Mar. 31, 2015
Marketable Securities [Abstract]
Marketable Securities	6. Marketable Securities
	Below is a summary of our marketable securities portfolio as of March 31, 2015 and December 31, 2014.
	(Amounts in thousands)		As of March 31, 2015						As of December 31, 2014
					GAAP		Unrealized				GAAP		Unrealized
			Fair Value		Cost		Gain		Fair Value		Cost		Gain
	Equity securities:
		Lexington Realty Trust	$	181,550	$	72,549	$	109,001	$	202,789	$	72,549	$	130,240
		Other		3,441		-		3,441		3,534		-		3,534
			$	184,991	$	72,549	$	112,442	$	206,323	$	72,549	$	133,774

Investments_in_Partially_Owned

Investments in Partially Owned Entities	3 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investments in Partially Owned Entities	7. Investments in Partially Owned Entities
	Toys “R” Us (“Toys”)
	As of March 31, 2015, we own 32.6% of Toys. We have not guaranteed any of Toys' obligations and are not committed to provide any support to Toys.  Pursuant to ASC 323-10-35-20, we discontinued applying the equity method for our Toys' investment when the carrying amount was reduced to zero in the third quarter of 2014. We will resume application of the equity method if, during the period the equity method has been suspended, our share of unrecognized net income exceeds our share of unrecognized net losses.
	In the first quarter of 2014, we recognized our share of Toys' fourth quarter net income of $75,196,000 and a corresponding non-cash impairment loss of the same amount.
	Below is a summary of Toys' latest available financial information on a purchase accounting basis:
		(Amounts in thousands)				Balance as of
		Balance Sheet:				31-Jan-15			1-Nov-14
			Assets			$	9,958,000		$	11,267,000
			Liabilities				9,014,000			10,377,000
			Noncontrolling interests				85,000			82,000
			Toys “R” Us, Inc. equity (1)				859,000			808,000
						For the Three Months Ended
		Income Statement:				31-Jan-15			1-Feb-14
			Total revenues			$	4,983,000		$	5,267,000
			Net income attributable to Toys				193,700			82,500
		-1		At March 31, 2015, the carrying amount of our investment in Toys is less than our share of Toys' equity by approximately $279,936. This basis difference results primarily from non-cash impairment losses aggregating $355,953 that we have recognized through March 31, 2015. We have allocated the basis difference primarily to Toys' real estate, which is being amortized over its remaining estimated useful life.
	Alexander's, Inc. (“Alexander's”) (NYSE: ALX)
	As of March 31, 2015, we own 1,654,068 Alexander's common shares, or approximately 32.4% of Alexander's common equity. We manage, lease and develop Alexander's properties pursuant to agreements which expire in March of each year and are automatically renewable.
	As of March 31, 2015, the market value (“fair value” pursuant to ASC 820) of our investment in Alexander's, based on Alexander's March 31, 2015 closing share price of $456.58, was $755,214,000, or $623,071,000 in excess of the carrying amount on our consolidated balance sheet. As of March 31, 2015, the carrying amount of our investment in Alexander's exceeds our share of the equity in the net assets of Alexander's by approximately $41,048,000. The majority of this basis difference resulted from the excess of our purchase price for the Alexander's common stock acquired over the book value of Alexander's net assets. Substantially all of this basis difference was allocated, based on our estimates of the fair values of Alexander's assets and liabilities, to real estate (land and buildings). We are amortizing the basis difference related to the buildings into earnings as additional depreciation expense over their estimated useful lives. This depreciation is not material to our share of equity in Alexander's net income. The basis difference related to the land will be recognized upon disposition of our investment.
	7. Investments in Partially Owned Entities - continued
	Alexander's, Inc. (“Alexander's”) (NYSE: ALX) - continued
	Below is a summary of Alexander's latest available financial information:
	(Amounts in thousands)				Balance as of
	Balance Sheet:				31-Mar-15			31-Dec-14
		Assets			$	1,433,000		$	1,423,000
		Liabilities				1,084,000			1,075,000
		Stockholders' equity				349,000			348,000
					For the Three Months Ended March 31,
	Income Statement:				2015			2014
		Total revenues			$	52,000		$	49,000
		Net income attributable to Alexander’s				18,000			15,000
	Urban Edge Properties (“UE”) (NYSE: UE)
	As part of our spin-off of substantially all of our retail segment to UE on January 15, 2015 (see Note 1 – Organization), we retained 5,717,184 UE operating partnership units, representing a 5.4% ownership interest in UE. We account for our investment in UE under the equity method and will recognize our share of UE's earnings on a one-quarter lag basis. We are providing transition services to UE for an initial period of up to two years, including information technology, human resources, tax and financial reporting. UE is providing us with leasing and property management services for (i) the Monmouth Mall, (ii) certain small retail properties that we plan to sell, and (iii) our affiliate, Alexander's, Rego Park retail assets.
	Pennsylvania Real Estate Investment Trust (“PREIT”) (NYSE: PEI)
	On March 31, 2015, we transferred the redeveloped Springfield Town Center, a 1,350,000 square foot mall located in Springfield, Fairfax County, Virginia, to PREIT Associates, L.P., which is the operating partnership of PREIT, in exchange for $485,313,000; comprised of $340,000,000 of cash and 6,250,000 PREIT operating partnership units (valued at $145,313,000 or $23.25 per PREIT unit) (See Note 8 – Dispositions). $19,000,000 of tenant improvements and allowances was credited to PREIT as a closing adjustment. As a result of this transaction, we own an 8.1% interest in PREIT. We account for our investment in PREIT under the equity method and will recognize our share of PREIT's earnings on a one-quarter lag basis.
	7. Investments in Partially Owned Entities – continued
	Below are schedules summarizing our investments in, and (loss) income from, partially owned entities.
						Percentage
	(Amounts in thousands)					Ownership at				Balance as of
	Investments:					31-Mar-15				31-Mar-15			31-Dec-14
		Partially owned office buildings (1)						Various		$	766,074		$	760,749
		PREIT Associates						8.10%			144,681			-
		Alexander’s						32.40%			132,143			131,616
		India real estate ventures						4.1%-36.5%			67,159			76,752
		Urban Edge						5.40%			25,206			-
		Toys						32.60%			-			-
		Other investments (2)						Various			272,951			277,379
										$	1,408,214		$	1,246,496
	-1		Includes interests in 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
	-2		Includes interests in Independence Plaza, Monmouth Mall, 85 Tenth Avenue, Fashion Center Mall, 50-70 West 93rd Street and others.
								Percentage			For the Three Months
	(Amounts in thousands)							Ownership at			Ended March 31,
	Our Share of Net (Loss) Income:							31-Mar-15			2015			2014
		Partially owned office buildings (1)							Various		$	-9,296		$	-2,395
		Alexander's:
			Equity in net income						32.40%			5,594			4,759
			Management, leasing and development fees									2,097			1,626
												7,691			6,385
		Toys:
			Equity in net income						32.60%			-			75,196
			Non-cash impairment losses									-			-75,196
			Management fees									1,454			1,847
												1,454			1,847
		Urban Edge (2)							5.40%			584			-
	India real estate ventures							4.1%-36.5%			-109			-137
	Other investments (3)							Various			-2,729			-3,721
										$	-2,405		$	1,979
-1			Includes interests in 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
-2			Represents fees earned pursuant to our transition services agreement with UE.
-3			Includes interests in Independence Plaza, Monmouth Mall, 85 Tenth Avenue, Fashion Center Mall, 50-70 West 93rd Street and others.

Dispositions

Dispositions	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	8. Dispositions
	Discontinued Operations
	On January 15, 2015, we completed the spin-off of substantially all of our retail segment comprised of 79 strip shopping centers, three malls, a warehouse park and $225,000,000 of cash to UE (NYSE: UE) (see Note 1 – Organization).
	On March 13, 2015, we sold our lease position in Geary Street, CA for $34,189,000, which resulted in a net gain of $21,376,000.
	On March 31, 2015, we transferred the redeveloped Springfield Town Center, a 1,350,000 square foot mall located in Springfield, Fairfax County, Virginia, to PREIT (see Note 7 – Investments in Partially Owned Entities). The financial statement gain was $7,823,000, of which $7,192,000 was recognized in the first quarter of 2015 and the remaining $631,000 was deferred based on our ownership interest in PREIT. On March 31, 2018, we will be entitled to additional consideration of 50% of the increase in the value of Springfield Town Center, if any, over $465,000,000, calculated utilizing a 5.5% capitalization rate. In the first quarter of 2014, we recorded a non-cash impairment loss of $20,000,000 on Springfield Town Center which is included in “income from discontinued operations” on our consolidated statements of income.
	During the first quarter of 2015, we sold five residual retail properties, in separate transactions, for an aggregate of $10,731,000, which resulted in net gains of $3,675,000.
	We have reclassified the revenues and expenses of the properties discussed above to “income from discontinued operations” and the related assets and liabilities to “assets related to discontinued operations” and “liabilities related to discontinued operations” for all of the periods presented in the accompanying consolidated financial statements. The net gains resulting from the sale of these properties are included in “income from discontinued operations” on our consolidated statements of income. The tables below set forth the assets and liabilities related to discontinued operations at March 31, 2015 and December 31, 2014 and their combined results of operations and cash flows for the three months ended March 31, 2015 and 2014.
				Balance as of
		(Amounts in thousands)		March 31,		December 31,
				2015		2014
		Assets related to discontinued operations:
			Real estate, net	$	27,199	$	2,028,677
			Other assets		8,143		209,797
				$	35,342	$	2,238,474
		Liabilities related to discontinued operations:
			Mortgages payable		-		1,288,535
			Other liabilities (primarily deferred revenue in 2014)		11,354		222,827
				$	11,354	$	1,511,362
				For the Three Months
		(Amounts in thousands)		Ended March 31,
				2015		2014
		Income from discontinued operations
			Total revenues	$	19,958	$	106,563
			Total expenses		13,373		76,025
					6,585		30,538
			Net gain on sale of lease position in Geary Street, CA		21,376		-
			Net gains on sale of real estate		10,867		-
			Transaction related costs		-22,645		-499
			Impairment losses		-256		-20,842
			Pretax income from discontinued operations		15,927		9,197
			Income tax expense		-86		-731
			Income from discontinued operations	$	15,841	$	8,466
		Cash flows related to discontinued operations:
			Cash flows from operating activities	$	-36,672	$	15,535
			Cash flows from investing activities		310,069		-30,397

Identified_Intangible_Assets_a

Identified Intangible Assets and Liabilities	3 Months Ended
	Mar. 31, 2015
Identified Intangible Assets and Liabilities [Abstract]
Identified Intangible Assets and Intangible Liabilities	9. Identified Intangible Assets and Liabilities
	The following summarizes our identified intangible assets (primarily acquired in-place and above-market leases) and liabilities (primarily acquired below-market leases) as of March 31, 2015 and December 31, 2014.
			Balance as of
			March 31,		December 31,
		(Amounts in thousands)	2015		2014
		Identified intangible assets:
		Gross amount	$	429,909	$	424,976
		Accumulated amortization		-200,330		-199,821
		Net	$	229,579	$	225,155
		Identified intangible liabilities (included in deferred revenue):
		Gross amount	$	620,891	$	657,976
		Accumulated amortization		-304,929		-329,775
		Net	$	315,962	$	328,201
	Amortization of acquired below-market leases, net of acquired above-market leases, resulted in an increase to rental income of $12,450,000 and $9,712,000 for the three months ended March 31, 2015 and 2014, respectively. Estimated annual amortization of acquired below-market leases, net of acquired above-market leases, for each of the five succeeding years commencing January 1, 2016 is as follows:
		(Amounts in thousands)
		2016	$	36,804
		2017		34,829
		2018		33,546
		2019		23,514
		2020		21,505
	Amortization of all other identified intangible assets (a component of depreciation and amortization expense) was $6,185,000 and $8,891,000 for the three months ended March 31, 2015 and 2014, respectively. Estimated annual amortization of all other identified intangible assets including acquired in-place leases, customer relationships, and third party contracts for each of the five succeeding years commencing January 1, 2016 is as follows:
		(Amounts in thousands)
		2016	$	22,523
		2017		17,692
		2018		13,373
		2019		11,425
		2020		10,651
	We are a tenant under ground leases for certain properties. Amortization of these acquired below-market leases, net of above-market leases resulted in an increase to rent expense of $458,000 for the three months ended March 31, 2015 and 2014. Estimated annual amortization of these below-market leases, net of above-market leases for each of the five succeeding years commencing January 1, 2016 is as follows:
		(Amounts in thousands)
		2016	$	1,832
		2017		1,832
		2018		1,832
		2019		1,832
		2020		1,832

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	10. Debt
	On January 1, 2015, we redeemed all of the $500,000,000 principal amount of our outstanding 4.25% senior unsecured notes, which were scheduled to mature on April 1, 2015, at a redemption price of 100% of the principal amount plus accrued interest through December 31, 2014.
	On April 1, 2015, we completed a $308,000,000 refinancing of RiverHouse Apartments, a three building, 1,670 unit rental complex located in Arlington, VA. The loan is interest-only at LIBOR plus 1.28% and matures in 2025. We realized net proceeds of approximately $43,000,000. The property was previously encumbered by a 5.43%, $195,000,000 mortgage maturing in April 2015 and a $64,000,000 mortgage at LIBOR plus 1.53% maturing in 2018.
	The following is a summary of our debt:
				Interest Rate at		Balance at
		(Amounts in thousands)		31-Mar-15		31-Mar-15		31-Dec-14
		Mortgages Payable:
			Fixed rate		4.46%	$	6,553,924	$	6,499,396
			Variable rate		2.21%		1,762,869		1,763,769
					3.99%	$	8,316,793	$	8,263,165
		Unsecured Debt:
			Senior unsecured notes		3.68%	$	847,332	$	1,347,159
			Revolving credit facility debt		1.23%		400,000		-
					3.39%	$	1,247,332	$	1,347,159

Redeemable_Noncontrolling_Inte

Redeemable Noncontrolling Interests	3 Months Ended
	Mar. 31, 2015
Redeemable Noncontrolling Interests [Abstract]
Redeemable Noncontrolling Interests	11. Redeemable Noncontrolling Interests
	Redeemable noncontrolling interests on our consolidated balance sheets are comprised primarily of Class A Operating Partnership units that are held by third parties and are recorded at the greater of their carrying amount or redemption value at the end of each reporting period. Changes in the value from period to period are charged to “additional capital” in our consolidated statements of changes in equity. Below is a table summarizing the activity of redeemable noncontrolling interests.
		(Amounts in thousands)
		Balance at December 31, 2013	$	1,003,620
		Net income		3,860
		Other comprehensive income		361
		Distributions		-8,383
		Redemption of Class A units for common shares, at redemption value		-5,156
		Adjustments to carry redeemable Class A units at redemption value		136,937
		Other, net		9,592
		Balance at March 31, 2014	$	1,140,831
		Balance at December 31, 2014	$	1,337,780
		Net income		5,287
		Other comprehensive loss		-1,288
		Distributions		-7,280
		Redemption of Class A units for common shares, at redemption value		-23,493
		Adjustments to carry redeemable Class A units at redemption value		-25,349
		Other, net		19,133
		Balance at March 31, 2015	$	1,304,790
	As of March 31, 2015 and December 31, 2014, the aggregate redemption value of redeemable Class A units was $1,303,790,000 and $1,336,780,000, respectively.
	Redeemable noncontrolling interests exclude our Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units, as they are accounted for as liabilities in accordance with ASC 480, Distinguishing Liabilities and Equity, because of their possible settlement by issuing a variable number of Vornado common shares. Accordingly, the fair value of these units is included as a component of “other liabilities” on our consolidated balance sheets and aggregated $55,097,000 as of March 31, 2015 and December 31, 2014. Changes in the value from period to period, if any, are charged to “interest and debt expense” on our consolidated statements of income.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income ("AOCI")	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Income Disclosure [Text Block]	12. Accumulated Other Comprehensive Income (“AOCI”)
	The following tables set forth the changes in accumulated other comprehensive income (loss) by component.
			For the Three Months Ended March 31, 2014
					Securities		Pro rata share of		Interest
					available-		nonconsolidated		rate
	(Amounts in thousands)		Total		for-sale		subsidiaries' OCI		swap		Other
	Balance as of December 31, 2013		$	71,537	$	119,309	$	-11,501	$	-31,882	$	-4,389
		OCI before reclassifications		6,089		13,125		-8,286		1,610		-360
		Amounts reclassified from AOCI		-		-		-		-		-
	Net current period OCI			6,089		13,125		-8,286		1,610		-360
	Balance as of March 31, 2014		$	77,626	$	132,434	$	-19,787	$	-30,272	$	-4,749
			For the Three Months Ended March 31, 2015
					Securities		Pro rata share of		Interest
					available-		nonconsolidated		rate
	(Amounts in thousands)		Total		for-sale		subsidiaries' OCI		swap		Other
	Balance as of December 31, 2014		$	93,267	$	133,774	$	-8,992	$	-25,803	$	-5,712
		OCI before reclassifications		-20,658		-21,332		157		-776		1,293
		Amounts reclassified from AOCI		-		-		-		-		-
	Net current period OCI			-20,658		-21,332		157		-776		1,293
	Balance as of March 31, 2015		$	72,609	$	112,442	$	-8,835	$	-26,579	$	-4,419

Variable_Interest_Entities_VIE

Variable Interest Entities ("VIEs")	3 Months Ended
	Mar. 31, 2015
Variable Interest Entities [Abstract]
Variable Interest Entities ("VIEs")	13. Variable Interest Entities (“VIEs”)
	At March 31, 2015 and December 31, 2014, we have unconsolidated VIEs comprised of our investments in the entities that own One Park Avenue, Independence Plaza and the Warner Building. We do not consolidate these entities because we are not the primary beneficiary and the nature of our involvement in the activities of these entities does not give us power over decisions that significantly affect these entities' economic performance. We account for our investment in these entities under the equity method. As of March 31, 2015 and December 31, 2014, the net carrying amounts of our investment in these entities were $286,876,000 and $286,783,000, respectively, and our maximum exposure to loss in these entities is limited to our investment. We did not have any consolidated VIEs as of March 31, 2015 and December 31, 2014.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	14. Fair Value Measurements
	ASC 820, Fair Value Measurement and Disclosures defines fair value and establishes a framework for measuring fair value. The objective of fair value is to determine the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). ASC 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: Level 1 – quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities; Level 2 – observable prices that are based on inputs not quoted in active markets, but corroborated by market data; and Level 3 – unobservable inputs that are used when little or no market data is available. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment is necessary to interpret Level 2 and 3 inputs in determining the fair value of our financial and non-financial assets and liabilities. Accordingly, our fair value estimates, which are made at the end of each reporting period, may be different than the amounts that may ultimately be realized upon sale or disposition of these assets.
	Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis
	Financial assets and liabilities that are measured at fair value on our consolidated balance sheets consist of (i) marketable securities, (ii) real estate fund investments, (iii) the assets in our deferred compensation plan (for which there is a corresponding liability on our consolidated balance sheet), (iv) mandatorily redeemable instruments (Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units), and (v) an interest rate swap. The tables below aggregate the fair values of these financial assets and liabilities by their levels in the fair value hierarchy at March 31, 2015 and December 31, 2014, respectively.
					As of March 31, 2015
		(Amounts in thousands)			Total		Level 1			Level 2		Level 3
		Marketable securities			$	184,991	$	184,991		$	-	$	-
		Real estate fund investments (75% of which is attributable to
			noncontrolling interests)			554,426		-			-		554,426
		Deferred compensation plan assets (included in other assets)				121,530		56,694			-		64,836
			Total assets		$	860,947	$	241,685		$	-	$	619,262
		Mandatorily redeemable instruments (included in other liabilities)			$	55,097	$	55,097		$	-	$	-
		Interest rate swap (included in other liabilities)				26,574		-			26,574		-
			Total liabilities		$	81,671	$	55,097		$	26,574	$	-
					As of December 31, 2014
		(Amounts in thousands)			Total		Level 1			Level 2		Level 3
		Marketable securities			$	206,323	$	206,323		$	-	$	-
		Real estate fund investments (75% of which is attributable to
			noncontrolling interests)			513,973		-			-		513,973
		Deferred compensation plan assets (included in other assets)				117,284		53,969			-		63,315
			Total assets		$	837,580	$	260,292		$	-	$	577,288
		Mandatorily redeemable instruments (included in other liabilities)			$	55,097	$	55,097		$	-	$	-
		Interest rate swap (included in other liabilities)				25,797		-			25,797		-
			Total liabilities		$	80,894	$	55,097		$	25,797	$	-
	14. Fair Value Measurements – continued
	Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis - continued
	Real Estate Fund Investments
	At March 31, 2015, we had six investments with an aggregate fair value of $554,426,000, or $169,832,000 in excess of cost. These investments are classified as Level 3. We use a discounted cash flow valuation technique to estimate the fair value of each of these investments, which is updated quarterly by personnel responsible for the management of each investment and reviewed by senior management at each reporting period. The discounted cash flow valuation technique requires us to estimate cash flows for each investment over the anticipated holding period, which currently ranges from 0.8 to 5.8 years. Cash flows are derived from property rental revenue (base rents plus reimbursements) less operating expenses, real estate taxes and capital and other costs, plus projected sales proceeds in the year of exit. Property rental revenue is based on leases currently in place and our estimates for future leasing activity, which are based on current market rents for similar space plus a projected growth factor. Similarly, estimated operating expenses and real estate taxes are based on amounts incurred in the current period plus a projected growth factor for future periods. Anticipated sales proceeds at the end of an investment's expected holding period are determined based on the net cash flow of the investment in the year of exit, divided by a terminal capitalization rate, less estimated selling costs.
	The fair value of each property is calculated by discounting the future cash flows (including the projected sales proceeds), using an appropriate discount rate and then reduced by the property's outstanding debt, if any, to determine the fair value of the equity in each investment. Significant unobservable quantitative inputs used in determining the fair value of each investment include capitalization rates and discount rates. These rates are based on the location, type and nature of each property, and current and anticipated market conditions, which are derived from original underwriting assumptions, industry publications and from the experience of our Acquisitions and Capital Markets departments. Significant unobservable quantitative inputs in the table below were utilized in determining the fair value of these real estate fund investments at March 31, 2015 and December 31, 2014.
									Weighted Average
						Range			(based on fair value of investments)
		Unobservable Quantitative Input				31-Mar-15	31-Dec-14		31-Mar-15		31-Dec-14
			Discount rates			12.0% to 14.5%	12.0% to 17.5%		13.40%		13.70%
			Terminal capitalization rates			4.8% to 6.5%	4.7% to 6.5%		5.50%		5.30%
	The above inputs are subject to change based on changes in economic and market conditions and/or changes in use or timing of exit. Changes in discount rates and terminal capitalization rates result in increases or decreases in the fair values of these investments. The discount rates encompass, among other things, uncertainties in the valuation models with respect to terminal capitalization rates and the amount and timing of cash flows. Therefore, a change in the fair value of these investments resulting from a change in the terminal capitalization rate, may be partially offset by a change in the discount rate. It is not possible for us to predict the effect of future economic or market conditions on our estimated fair values.
	The table below summarizes the changes in the fair value of real estate fund investments that are classified as Level 3, for the three months ended March 31, 2015 and 2014.
					Real Estate Fund Investments
					For the Three Months Ended March 31,
		(Amounts in thousands)			2015		2014
		Beginning balance			$	513,973	$	667,710
		Purchases				95,000		123
		Dispositions / Distributions				-72,186		-
		Net unrealized gains				16,213		14,169
		Net realized gains				1,426		-
		Ending balance			$	554,426	$	682,002
	14. Fair Value Measurements – continued
	Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis - continued
	Deferred Compensation Plan Assets
	Deferred compensation plan assets that are classified as Level 3 consist of investments in limited partnerships and investment funds, which are managed by third parties. We receive quarterly financial reports from a third-party administrator, which are compiled from the quarterly reports provided to them from each limited partnership and investment fund. The quarterly reports provide net asset values on a fair value basis which are audited by independent public accounting firms on an annual basis. The third-party administrator does not adjust these values in determining our share of the net assets and we do not adjust these values when reported in our consolidated financial statements.
	The table below summarizes the changes in the fair value of deferred compensation plan assets that are classified as Level 3, for the three months ended March 31, 2015 and 2014.
					Deferred Compensation Plan Assets
					For the Three Months Ended March 31,
		(Amounts in thousands)			2015		2014
		Beginning balance			$	63,315	$	68,782
		Purchases				624		1,644
		Sales				-438		-5,124
		Realized and unrealized gain				1,335		2,172
		Other, net				-		153
		Ending balance			$	64,836	$	67,627
	Fair Value Measurements on a Nonrecurring Basis
	Assets measured at fair value on a nonrecurring basis on our consolidated balance sheets consist primarily of real estate assets required to be measured for impairment at December 31, 2014. The fair value of our real estate assets was determined using widely accepted valuation techniques, including (i) discounted cash flow analysis, which considers, among other things, leasing assumptions, growth rates, discount rates and terminal capitalization rates, (ii) income capitalization approach, which considers prevailing market capitalization rates, and (iii) comparable sales activity.
					As of December 31, 2014
		(Amounts in thousands)			Total		Level 1			Level 2		Level 3
			Real estate assets		$	4,848	$	-		$	-	$	4,848
14. Fair Value Measurements – continued
Financial Assets and Liabilities not Measured at Fair Value
Financial assets and liabilities that are not measured at fair value on our consolidated balance sheets include cash equivalents (primarily money market funds, which invest in obligations of the United States government), mortgage and mezzanine loans receivable and our secured and unsecured debt. Estimates of the fair value of these instruments are determined by the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value at the appropriate current risk adjusted interest rate, which is provided by a third-party specialist. For floating rate debt, we use forward rates derived from observable market yield curves to project the expected cash flows we would be required to make under the instrument. The fair value of cash equivalents and borrowings under our revolving credit facility is classified as Level 1, and the fair value of our mortgage and mezzanine loans receivable is classified as Level 3. The fair value of our secured and unsecured debt are classified as Level 2. The table below summarizes the carrying amounts and fair value of these financial instruments as of March 31, 2015 and December 31, 2014.
				As of March 31, 2015					As of December 31, 2014
				Carrying		Fair			Carrying		Fair
	(Amounts in thousands)			Amount		Value			Amount		Value
		Cash equivalents		$	526,218	$	526,000		$	749,418	$	749,000
		Mortgage and mezzanine loans receivable			-		-			16,748		17,000
				$	526,218	$	526,000		$	766,166	$	766,000
		Debt:
			Mortgages payable	$	8,316,793	$	8,334,000		$	8,263,165	$	8,224,000
			Senior unsecured notes		847,332		898,000			1,347,159		1,385,000
			Revolving credit facility debt		400,000		400,000			-		-
				$	9,564,125	$	9,632,000		$	9,610,324	$	9,609,000

Incentive_Compensation

Incentive Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Incentive Compensation	15. Incentive Compensation
	Our 2010 Omnibus Share Plan (the “Plan”) provides for grants of incentive and non-qualified stock options, restricted stock, restricted Operating Partnership units and Out-Performance Plan awards to certain of our employees and officers. We account for all stock-based compensation in accordance with ASC 718, Compensation – Stock Compensation. Stock-based compensation expense was $20,142,000 and $11,024,000 in the three months ended March 31, 2015 and 2014, respectively.

Fee_and_Other_Income

Fee and Other Income	3 Months Ended
	Mar. 31, 2015
Fee and Other Income [Abstract]
Fee and Other Income	16. Fee and Other Income
	The following table sets forth the details of fee and other income:
			For the Three Months
		(Amounts in thousands)	Ended March 31,
			2015		2014
		BMS cleaning fees	$	22,633	$	18,956
		Management and leasing fees		4,192		5,828
		Lease termination fees		3,747		3,577
		Other income		9,035		7,579
			$	39,607	$	35,940
	Management and leasing fees include management fees from Interstate Properties, a related party, of $139,000 and $134,000 for the three months ended March 31, 2015 and 2014, respectively. The above table excludes fee income from partially owned entities, which is typically included in “(loss) income from partially owned entities” (see Note 7 – Investments in Partially Owned Entities).

Interest_and_Other_Investment_

Interest and Other Investment Income, Net	3 Months Ended
	Mar. 31, 2015
Interest and Other Investment Income, Net [Abstract]
Interest and Other Investment Income, Net	17. Interest and Other Investment Income, Net
	The following table sets forth the details of interest and other investment income:
				For the Three Months
		(Amounts in thousands)		Ended March 31,
				2015		2014
		Dividends and interest on marketable securities		$	3,203	$	3,106
		Mark-to-market of investments in our deferred compensation plan (1)			2,859		4,400
		Interest on mezzanine loans receivable			1,674		2,384
		Other, net			3,056		1,960
				$	10,792	$	11,850
		-1	This income is entirely offset by the expense resulting from the mark-to-market of the deferred compensation plan liability, which is included in "general and administrative" expense.

Interest_and_Debt_Expense

Interest and Debt Expense	3 Months Ended
	Mar. 31, 2015
Interest Expense Debt [Abstract]
Interest And Debt Expense [Text Block]	18. Interest and Debt Expense
	The following table sets forth the details of interest and debt expense:
			For the Three Months
		(Amounts in thousands)	Ended March 31,
			2015		2014
		Interest expense	$	95,328	$	105,512
		Amortization of deferred financing costs		7,456		4,422
		Capitalized interest and debt expense		-11,110		-13,622
			$	91,674	$	96,312

Income_Per_Share

Income Per Share	3 Months Ended
	Mar. 31, 2015
Income Per Share [Abstract]
Income Per Share	19.       Income Per Share
	The following table provides a reconciliation of both net income and the number of common shares used in the computation of (i) basic income per common share - which includes the weighted average number of common shares outstanding without regard to dilutive potential common shares, and (ii) diluted income per common share - which includes the weighted average common shares and dilutive share equivalents. Dilutive share equivalents may include our Series A convertible preferred shares, employee stock options and restricted share awards.
				For the Three Months
	(Amounts in thousands, except per share amounts)			Ended March 31,
				2015		2014
	Numerator:
		Income from continuing operations, net of income attributable
			to noncontrolling interests	$	89,166	$	74,743
		Income from discontinued operations, net of income attributable
			to noncontrolling interests		14,911		7,974
		Net income attributable to Vornado			104,077		82,717
		Preferred share dividends			-19,484		-20,368
		Net income attributable to common shareholders			84,593		62,349
		Earnings allocated to unvested participating securities			-19		-30
		Numerator for diluted income per share		$	84,574	$	62,319
	Denominator:
		Denominator for basic income per share – weighted average shares			187,999		187,307
		Effect of dilutive securities(1):
			Employee stock options and restricted share awards		1,337		933
		Denominator for diluted income per share – weighted average
			shares and assumed conversions		189,336		188,240
	INCOME PER COMMON SHARE – BASIC:
		Income from continuing operations, net		$	0.37	$	0.29
		Income from discontinued operations, net			0.08		0.04
		Net income per common share		$	0.45	$	0.33
	INCOME PER COMMON SHARE – DILUTED:
		Income from continuing operations, net		$	0.37	$	0.29
		Income from discontinued operations, net			0.08		0.04
		Net income per common share		$	0.45	$	0.33
	-1		The effect of dilutive securities in the three months ended March 31, 2015 and 2014 excludes an aggregate of 11,488 and 11,326 weighted average common share equivalents, respectively, as their effect was anti-dilutive.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	20.       Commitments and Contingencies
	Insurance
	We maintain general liability insurance with limits of $300,000,000 per occurrence and all risk property and rental value insurance with limits of $2.0 billion per occurrence, with sub-limits for certain perils such as floods. Our California properties have earthquake insurance with coverage of $180,000,000 per occurrence, subject to a deductible in the amount of 5% of the value of the affected property, up to a $180,000,000 annual aggregate. We maintain coverage for terrorism acts with limits of $4.0 billion per occurrence and in the aggregate, and $2.0 billion per occurrence and in the aggregate for terrorism involving nuclear, biological, chemical and radiological (“NBCR”) terrorism events, as defined by Terrorism Risk Insurance Program Reauthorization Act, which expires in December 2020.
	Penn Plaza Insurance Company, LLC (“PPIC”), our wholly owned consolidated subsidiary, acts as a re-insurer with respect to a portion of all risk property and rental value insurance and a portion of our earthquake insurance coverage, and as a direct insurer for coverage for NBCR acts. Coverage for acts of terrorism (excluding NBCR acts) is fully reinsured by third party insurance companies and the Federal government with no exposure to PPIC. For NBCR acts, PPIC is responsible for a deductible of $2,480,000 and 15% of the balance of a covered loss (16% effective January 1, 2016) and the Federal government is responsible for the remaining 85% of a covered loss (84% effective January 1, 2016). We are ultimately responsible for any loss incurred by PPIC.
	We continue to monitor the state of the insurance market and the scope and costs of coverage for acts of terrorism. However, we cannot anticipate what coverage will be available on commercially reasonable terms in the future.
	Our debt instruments, consisting of mortgage loans secured by our properties which are non-recourse to us, senior unsecured notes and revolving credit agreements contain customary covenants requiring us to maintain insurance. Although we believe that we have adequate insurance coverage for purposes of these agreements, we may not be able to obtain an equivalent amount of coverage at reasonable costs in the future. Further, if lenders insist on greater coverage than we are able to obtain it could adversely affect our ability to finance our properties and expand our portfolio.
	Other Commitments and Contingencies
	We are from time to time involved in legal actions arising in the ordinary course of business. In our opinion, after consultation with legal counsel, the outcome of such matters is not expected to have a material adverse effect on our financial position, results of operations or cash flows.
	Each of our properties has been subjected to varying degrees of environmental assessment at various times. The environmental assessments did not reveal any material environmental contamination. However, there can be no assurance that the identification of new areas of contamination, changes in the extent or known scope of contamination, the discovery of additional sites, or changes in cleanup requirements would not result in significant costs to us.
	Our mortgage loans are non-recourse to us. However, in certain cases we have provided guarantees or master leased tenant space. These guarantees and master leases terminate either upon the satisfaction of specified circumstances or repayment of the underlying loans. As of March 31, 2015, the aggregate dollar amount of these guarantees and master leases is approximately $349,000,000.
	At March 31, 2015, $39,632,000 of letters of credit were outstanding under one of our revolving credit facilities. Our revolving credit facilities contain financial covenants that require us to maintain minimum interest coverage and maximum debt to market capitalization ratios, and provide for higher interest rates in the event of a decline in our ratings below Baa3/BBB. Our revolving credit facilities also contain customary conditions precedent to borrowing, including representations and warranties, and also contain customary events of default that could give rise to accelerated repayment, including such items as failure to pay interest or principal.
	As of March 31, 2015, we expect to fund additional capital to certain of our partially owned entities aggregating approximately $78,000,000.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Information	21. Segment Information
	As a result of the spin-off of substantially all of our Retail Properties segment (see Note 8 - Dispositions), the remaining retail properties no longer meet the criteria to be a separate reportable segment. In addition, as a result of our investment in Toys being reduced to zero, we suspended equity method accounting for our investment in Toys (see Note 7 - Investments in Partially Owned Entities) and the Toys segment no longer meets the criteria to be a separate reportable segment. Accordingly, effective January 1, 2015, the Retail Properties segment and Toys have been reclassified to the Other segment. We have also reclassified the prior period segment financial results to conform to the current period presentation. Below is a summary of net income and a reconciliation of net income to EBITDA(1) by segment for the three months ended March 31, 2015 and 2014.
	(Amounts in thousands)			For the Three Months Ended March 31, 2015
					Total		New York			Washington, DC			Other
	Total revenues				$	606,802	$	399,513		$	133,968		$	73,321
	Total expenses					439,088		252,760			92,997			93,331
	Operating income (loss)					167,714		146,753			40,971			-20,010
	(Loss) income from partially owned entities					-2,405		-5,663			131			3,127
	Income from real estate fund investments					24,089		-			-			24,089
	Interest and other investment income, net					10,792		1,862			13			8,917
	Interest and debt expense					-91,674		-45,351			-18,160			-28,163
	Net gain on disposition of wholly owned and partially
		owned assets				1,860		-			-			1,860
	Income (loss) before income taxes					110,376		97,601			22,955			-10,180
	Income tax (expense) benefit					-971		-943			674			-702
	Income (loss) from continuing operations					109,405		96,658			23,629			-10,882
	Income from discontinued operations					15,841		-			-			15,841
	Net income					125,246		96,658			23,629			4,959
	Less net income attributable to noncontrolling interests					-21,169		-1,506			-			-19,663
	Net income (loss) attributable to Vornado					104,077		95,152			23,629			-14,704
	Interest and debt expense(2)					114,675		58,667			21,512			34,496
	Depreciation and amortization(2)					156,450		94,124			40,752			21,574
	Income tax (benefit) expense (2)					-739		1,002			-2,636			895
	EBITDA(1)				$	374,463	$	248,945	(3)	$	83,257	(4)	$	42,261	(5)
	21. Segment Information – continued
	(Amounts in thousands)				For the Three Months Ended March 31, 2014
					Total		New York			Washington, DC			Other
	Total revenues				$	562,381	$	361,184		$	135,278		$	65,919
	Total expenses					417,140		237,734			89,572			89,834
	Operating income (loss)					145,241		123,450			45,706			-23,915
	Income (loss) from partially owned entities					1,979		1,566			-1,266			1,679
	Income from real estate fund investments					18,148		-			-			18,148
	Interest and other investment income, net					11,850		1,441			36			10,373
	Interest and debt expense					-96,312		-42,839			-19,347			-34,126
	Net gain on disposition of wholly owned and partially
		owned assets				9,635		-			-			9,635
	Income (loss) before income taxes					90,541		83,618			25,129			-18,206
	Income tax (expense) benefit					-851		-969			199			-81
	Income (loss) from continuing operations					89,690		82,649			25,328			-18,287
	Income from discontinued operations					8,466		5,867			-			2,599
	Net income (loss)					98,156		88,516			25,328			-15,688
	Less net income attributable to noncontrolling interests					-15,439		-1,405			-			-14,034
	Net income (loss) attributable to Vornado					82,717		87,111			25,328			-29,722
	Interest and debt expense(2)					170,952		58,068			22,798			90,086
	Depreciation and amortization(2)					196,339		87,587			36,150			72,602
	Income tax expense (benefit)(2)					19,831		1,032			-189			18,988
	EBITDA(1)				$	469,839	$	233,798	(3)	$	84,087	(4)	$	151,954	(5)
	See notes on the following page.
	21. Segment Information – continued
		Notes to preceding tabular information:
	-1	EBITDA represents "Earnings Before Interest, Taxes, Depreciation and Amortization." We consider EBITDA a supplemental non-GAAP financial measure for making decisions and assessing the unlevered performance of our segments as it relates to the total return on assets as opposed to the levered return on equity. As properties are bought and sold based on a multiple of EBITDA, we utilize this measure to make investment decisions as well as to compare the performance of our assets to that of our peers. EBITDA should not be considered a substitute for net income. EBITDA may not be comparable to similarly titled measures employed by other companies.
	-2	Interest and debt expense, depreciation and amortization and income tax expense (benefit) in the reconciliation of net income (loss) to EBITDA includes our share of these items from partially owned entities.
	-3	The elements of "New York" EBITDA are summarized below.
								For the Three Months
								Ended March 31,
		(Amounts in thousands)						2015			2014
		Office						$	159,359		$	157,879
		Retail							81,305			66,195
		Alexander's							10,407			10,430
		Hotel Pennsylvania							-2,126			-706
			Total New York					$	248,945		$	233,798
	-4	The elements of "Washington, DC" EBITDA are summarized below.
								For the Three Months
								Ended March 31,
	(Amounts in thousands)						2015			2014
	Office, excluding the Skyline Properties						$	67,385		$	67,257
	Skyline properties							6,055			6,499
		Total Office						73,440			73,756
	Residential							9,817			10,331
		Total Washington, DC					$	83,257		$	84,087
21. Segment Information – continued
	Notes to preceding tabular information - continued:
-5	The elements of "other" EBITDA are summarized below.
							For the Three Months
							Ended March 31,
	(Amounts in thousands)						2015			2014
	Our share of Real Estate Fund:
		Income before net realized/unrealized gains					$	1,614		$	1,982
		Net realized/unrealized gains on investments						5,548			3,542
		Carried interest						3,388			1,775
	Total							10,550			7,299
	The Mart and trade shows							21,041			19,087
	555 California Street							12,401			12,066
	India real estate ventures							1,841			1,824
	Our share of Toys "R" Us(a)							-			83,550
	Other investments							9,109			9,447
								54,942			133,273
	Corporate general and administrative expenses(b)							-35,942			-25,982
	Investment income and other, net(b)							8,762			8,073
	Urban Edge Properties and residual retail properties discontinued operations(c)							19,907			32,100
	Acquisition and transaction related costs							-1,981			-1,285
	Net gain on sale of residential condominiums and a land parcel							1,860			9,635
	Net income attributable to noncontrolling interests in the Operating Partnership							-5,287			-3,860
							$	42,261		$	151,954
	(a)		As a result of our investment being reduced to zero, we suspended equity method accounting in the third quarter of 2014 (see Note 7 - Investments in Partially Owned Entities). The three months ended March 31, 2014 includes an impairment loss of $75,196.
	(b)		The amounts in these captions (for this table only) exclude income/expense from the mark-to-market of our deferred compensation plan of $2,859 and $4,400 for the three months ended March 31, 2015 and 2014, respectively. The three months ended March 31, 2015 include $8,817 from the acceleration of the recognition of compensation expense related to 2013-2015 Out-Performance Plans due to the modification of the vesting criteria of awards such that they will fully vest at age 65. The accelerated expense will result in lower general and administrative expense for the remainder of 2015 of $2,600 and $6,217 thereafter.
	(c)		The three months ended March 31, 2015 and 2014, include $22,645 and $499, respectively, of transaction costs related to the spin-off of our strip shopping centers and malls (see Note 1 - Organization).

Basis_of_Presentation_and_Sign

Basis of Presentation and Significant Accounting Policies (Policy)	3 Months Ended
	Mar. 31, 2015
Basis of Presentation and Significant Accounting Policies [Abstract]
Real Estate [Policy Text Block]	The Fund is accounted for under ASC 946, Financial Services – Investment Companies and its investments are reported on its balance sheet at fair value, with changes in value each period recognized in earnings. We consolidate the accounts of the Fund into our consolidated financial statements, retaining the fair value basis of accounting.
Redeemable Noncontrolling Interests Policy [Text Block]	Redeemable noncontrolling interests on our consolidated balance sheets are comprised primarily of Class A Operating Partnership units that are held by third parties and are recorded at the greater of their carrying amount or redemption value at the end of each reporting period. Changes in the value from period to period are charged to “additional capital” in our consolidated statements of changes in equity.
	Redeemable noncontrolling interests exclude our Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units, as they are accounted for as liabilities in accordance with ASC 480, Distinguishing Liabilities and Equity, because of their possible settlement by issuing a variable number of Vornado common shares.
Fair Value Measurement Policy [Policy Text Block]	In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in our assessment of fair value. Considerable judgment is necessary to interpret Level 2 and 3 inputs in determining the fair value of our financial and non-financial assets and liabilities. Accordingly, our fair value estimates, which are made at the end of each reporting period, may be different than the amounts that may ultimately be realized upon sale or disposition of these assets.
	Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis
	Financial assets and liabilities that are measured at fair value on our consolidated balance sheets consist of (i) marketable securities, (ii) real estate fund investments, (iii) the assets in our deferred compensation plan (for which there is a corresponding liability on our consolidated balance sheet), (iv) mandatorily redeemable instruments (Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units), and (v) an interest rate swap.
	Fair Value Measurements on a Nonrecurring Basis
	Assets measured at fair value on a nonrecurring basis on our consolidated balance sheets consist primarily of real estate assets required to be measured for impairment at December 31, 2014. The fair value of our real estate assets was determined using widely accepted valuation techniques, including (i) discounted cash flow analysis, which considers, among other things, leasing assumptions, growth rates, discount rates and terminal capitalization rates, (ii) income capitalization approach, which considers prevailing market capitalization rates, and (iii) comparable sales activity.
	Financial Assets and Liabilities not Measured at Fair Value
	Financial assets and liabilities that are not measured at fair value on our consolidated balance sheets include cash equivalents (primarily money market funds, which invest in obligations of the United States government), mortgage and mezzanine loans receivable and our secured and unsecured debt. Estimates of the fair value of these instruments are determined by the standard practice of modeling the contractual cash flows required under the instrument and discounting them back to their present value at the appropriate current risk adjusted interest rate, which is provided by a third-party specialist. For floating rate debt, we use forward rates derived from observable market yield curves to project the expected cash flows we would be required to make under the instrument. The fair value of cash equivalents and borrowings under our revolving credit facility is classified as Level 1, and the fair value of our mortgage and mezzanine loans receivable is classified as Level 3. The fair value of our secured and unsecured debt are classified as Level 2.

Vornado_Capital_Partners_Real_1

Vornado Capital Partners Real Estate Fund (the "Fund") (Tables)	3 Months Ended
	Mar. 31, 2015
Real Estate Fund [Abstract]
Schedule Of Income And Loss From The Fund [Table Text Block]			For the Three Months
	(Amounts in thousands)		Ended March 31,
			2015		2014
	Net investment income		$	6,450	$	3,979
	Net realized gains on exited investments			24,705		-
	Previously recorded unrealized gains on exited investments			-23,279		-
	Net unrealized gains on held investments			16,213		14,169
	Income from real estate fund investments			24,089		18,148
	Less income attributable to noncontrolling interests			-13,539		-10,849
	Income from real estate fund investments attributable to Vornado (1)		$	10,550	$	7,299
	___________________________________
	-1	Excludes property management, leasing and development fees of $704 and $618 for the three months ended March 31, 2015 and 2014, respectively, which are included as a component of "fee and other income" on our consolidated statements of income.

Marketable_Securities_Tables

Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Unrealized Gain (Loss) on Investments [Abstract]
Unrealized Gain (Loss) on Investments [Table Text Block]	(Amounts in thousands)		As of March 31, 2015						As of December 31, 2014
					GAAP		Unrealized				GAAP		Unrealized
			Fair Value		Cost		Gain		Fair Value		Cost		Gain
	Equity securities:
		Lexington Realty Trust	$	181,550	$	72,549	$	109,001	$	202,789	$	72,549	$	130,240
		Other		3,441		-		3,441		3,534		-		3,534
			$	184,991	$	72,549	$	112,442	$	206,323	$	72,549	$	133,774

Investments_in_Partially_Owned1

Investments in Partially Owned Entities (Tables)	3 Months Ended
	Mar. 31, 2015
Schedule Of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]						Percentage
	(Amounts in thousands)					Ownership at				Balance as of
	Investments:					31-Mar-15				31-Mar-15			31-Dec-14
		Partially owned office buildings (1)						Various		$	766,074		$	760,749
		PREIT Associates						8.10%			144,681			-
		Alexander’s						32.40%			132,143			131,616
		India real estate ventures						4.1%-36.5%			67,159			76,752
		Urban Edge						5.40%			25,206			-
		Toys						32.60%			-			-
		Other investments (2)						Various			272,951			277,379
										$	1,408,214		$	1,246,496
	-1		Includes interests in 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
	-2		Includes interests in Independence Plaza, Monmouth Mall, 85 Tenth Avenue, Fashion Center Mall, 50-70 West 93rd Street and others.
								Percentage			For the Three Months
	(Amounts in thousands)							Ownership at			Ended March 31,
	Our Share of Net (Loss) Income:							31-Mar-15			2015			2014
		Partially owned office buildings (1)							Various		$	-9,296		$	-2,395
		Alexander's:
			Equity in net income						32.40%			5,594			4,759
			Management, leasing and development fees									2,097			1,626
												7,691			6,385
		Toys:
			Equity in net income						32.60%			-			75,196
			Non-cash impairment losses									-			-75,196
			Management fees									1,454			1,847
												1,454			1,847
		Urban Edge (2)							5.40%			584			-
		India real estate ventures							4.1%-36.5%			-109			-137
		Other investments (3)							Various			-2,729			-3,721
											$	-2,405		$	1,979
	-1			Includes interests in 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
	-2			Represents fees earned pursuant to our transition services agreement with UE.
	-3			Includes interests in Independence Plaza, Monmouth Mall, 85 Tenth Avenue, Fashion Center Mall, 50-70 West 93rd Street and others.
Toys R Us [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]		(Amounts in thousands)				Balance as of
		Balance Sheet:				31-Jan-15			1-Nov-14
			Assets			$	9,958,000		$	11,267,000
			Liabilities				9,014,000			10,377,000
			Noncontrolling interests				85,000			82,000
			Toys “R” Us, Inc. equity (1)				859,000			808,000
						For the Three Months Ended
		Income Statement:				31-Jan-15			1-Feb-14
			Total revenues			$	4,983,000		$	5,267,000
			Net income attributable to Toys				193,700			82,500
		-1		At March 31, 2015, the carrying amount of our investment in Toys is less than our share of Toys' equity by approximately $279,936. This basis difference results primarily from non-cash impairment losses aggregating $355,953 that we have recognized through March 31, 2015. We have allocated the basis difference primarily to Toys' real estate, which is being amortized over its remaining estimated useful life.
Alexanders Inc [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investments [Table Text Block]	(Amounts in thousands)				Balance as of
	Balance Sheet:				31-Mar-15			31-Dec-14
		Assets			$	1,433,000		$	1,423,000
		Liabilities				1,084,000			1,075,000
		Stockholders' equity				349,000			348,000
					For the Three Months Ended March 31,
	Income Statement:				2015			2014
		Total revenues			$	52,000		$	49,000
		Net income attributable to Alexander’s				18,000			15,000

Dispositions_Tables

Dispositions (Tables)	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Long Term Debt Maturities Future Repayments Of Principal [Table Text Block]				Balance as of
		(Amounts in thousands)		March 31,		December 31,
				2015		2014
		Assets related to discontinued operations:
			Real estate, net	$	27,199	$	2,028,677
			Other assets		8,143		209,797
				$	35,342	$	2,238,474
		Liabilities related to discontinued operations:
			Mortgages payable		-		1,288,535
			Other liabilities (primarily deferred revenue in 2014)		11,354		222,827
				$	11,354	$	1,511,362
				For the Three Months
		(Amounts in thousands)		Ended March 31,
				2015		2014
		Income from discontinued operations
			Total revenues	$	19,958	$	106,563
			Total expenses		13,373		76,025
					6,585		30,538
			Net gain on sale of lease position in Geary Street, CA		21,376		-
			Net gains on sale of real estate		10,867		-
			Transaction related costs		-22,645		-499
			Impairment losses		-256		-20,842
			Pretax income from discontinued operations		15,927		9,197
			Income tax expense		-86		-731
			Income from discontinued operations	$	15,841	$	8,466
		Cash flows related to discontinued operations:
			Cash flows from operating activities	$	-36,672	$	15,535
			Cash flows from investing activities		310,069		-30,397

Identified_Intangible_Assets_a1

Identified Intangible Assets and Intangible Liabilities (Tables)	3 Months Ended
	Mar. 31, 2015
Finite-Lived Intangible Assets and Liabilities [Line Items]
Schedule of Identified Intangible Assets and Intangible Liabilities (Table)			Balance as of
			March 31,		December 31,
		(Amounts in thousands)	2015		2014
		Identified intangible assets:
		Gross amount	$	429,909	$	424,976
		Accumulated amortization		-200,330		-199,821
		Net	$	229,579	$	225,155
		Identified intangible liabilities (included in deferred revenue):
		Gross amount	$	620,891	$	657,976
		Accumulated amortization		-304,929		-329,775
		Net	$	315,962	$	328,201
Below Market Leases Net Of Above Market Leases [Member]
Finite-Lived Intangible Assets and Liabilities [Line Items]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]		(Amounts in thousands)
		2016	$	36,804
		2017		34,829
		2018		33,546
		2019		23,514
		2020		21,505
Other Identified Intangible Assets [Member]
Finite-Lived Intangible Assets and Liabilities [Line Items]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]		(Amounts in thousands)
		2016	$	22,523
		2017		17,692
		2018		13,373
		2019		11,425
		2020		10,651
Tenant Under Ground Leases [Member]
Finite-Lived Intangible Assets and Liabilities [Line Items]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]		(Amounts in thousands)
		2016	$	1,832
		2017		1,832
		2018		1,832
		2019		1,832
		2020		1,832

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt				Interest Rate at		Balance at
		(Amounts in thousands)		31-Mar-15		31-Mar-15		31-Dec-14
		Mortgages Payable:
			Fixed rate		4.46%	$	6,553,924	$	6,499,396
			Variable rate		2.21%		1,762,869		1,763,769
					3.99%	$	8,316,793	$	8,263,165
		Unsecured Debt:
			Senior unsecured notes		3.68%	$	847,332	$	1,347,159
			Revolving credit facility debt		1.23%		400,000		-
					3.39%	$	1,247,332	$	1,347,159

Redeemable_Noncontrolling_Inte1

Redeemable Noncontrolling Interests (Tables)	3 Months Ended
	Mar. 31, 2015
Redeemable Noncontrolling Interests [Abstract]
Summary Of Activity Of Redeemable Noncontrolling Interests		(Amounts in thousands)
		Balance at December 31, 2013	$	1,003,620
		Net income		3,860
		Other comprehensive income		361
		Distributions		-8,383
		Redemption of Class A units for common shares, at redemption value		-5,156
		Adjustments to carry redeemable Class A units at redemption value		136,937
		Other, net		9,592
		Balance at March 31, 2014	$	1,140,831
		Balance at December 31, 2014	$	1,337,780
		Net income		5,287
		Other comprehensive loss		-1,288
		Distributions		-7,280
		Redemption of Class A units for common shares, at redemption value		-23,493
		Adjustments to carry redeemable Class A units at redemption value		-25,349
		Other, net		19,133
		Balance at March 31, 2015	$	1,304,790

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income ("AOCI") (Tables)	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]			For the Three Months Ended March 31, 2014
					Securities		Pro rata share of		Interest
					available-		nonconsolidated		rate
	(Amounts in thousands)		Total		for-sale		subsidiaries' OCI		swap		Other
	Balance as of December 31, 2013		$	71,537	$	119,309	$	-11,501	$	-31,882	$	-4,389
		OCI before reclassifications		6,089		13,125		-8,286		1,610		-360
		Amounts reclassified from AOCI		-		-		-		-		-
	Net current period OCI			6,089		13,125		-8,286		1,610		-360
	Balance as of March 31, 2014		$	77,626	$	132,434	$	-19,787	$	-30,272	$	-4,749
			For the Three Months Ended March 31, 2015
					Securities		Pro rata share of		Interest
					available-		nonconsolidated		rate
	(Amounts in thousands)		Total		for-sale		subsidiaries' OCI		swap		Other
	Balance as of December 31, 2014		$	93,267	$	133,774	$	-8,992	$	-25,803	$	-5,712
		OCI before reclassifications		-20,658		-21,332		157		-776		1,293
		Amounts reclassified from AOCI		-		-		-		-		-
	Net current period OCI			-20,658		-21,332		157		-776		1,293
	Balance as of March 31, 2015		$	72,609	$	112,442	$	-8,835	$	-26,579	$	-4,419

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Schedule of Fair Values of Financial Assets and Liabilities by Levels [Table Text Block]					As of March 31, 2015
		(Amounts in thousands)			Total		Level 1			Level 2		Level 3
		Marketable securities			$	184,991	$	184,991		$	-	$	-
		Real estate fund investments (75% of which is attributable to
			noncontrolling interests)			554,426		-			-		554,426
		Deferred compensation plan assets (included in other assets)				121,530		56,694			-		64,836
			Total assets		$	860,947	$	241,685		$	-	$	619,262
		Mandatorily redeemable instruments (included in other liabilities)			$	55,097	$	55,097		$	-	$	-
		Interest rate swap (included in other liabilities)				26,574		-			26,574		-
			Total liabilities		$	81,671	$	55,097		$	26,574	$	-
					As of December 31, 2014
		(Amounts in thousands)			Total		Level 1			Level 2		Level 3
		Marketable securities			$	206,323	$	206,323		$	-	$	-
		Real estate fund investments (75% of which is attributable to
			noncontrolling interests)			513,973		-			-		513,973
		Deferred compensation plan assets (included in other assets)				117,284		53,969			-		63,315
			Total assets		$	837,580	$	260,292		$	-	$	577,288
		Mandatorily redeemable instruments (included in other liabilities)			$	55,097	$	55,097		$	-	$	-
		Interest rate swap (included in other liabilities)				25,797		-			25,797		-
			Total liabilities		$	80,894	$	55,097		$	25,797	$	-
Non-financial Assets Measured at Fair Value on a Nonrecurring Basis [Table Text Block]					As of December 31, 2014
		(Amounts in thousands)			Total		Level 1			Level 2		Level 3
			Real estate assets		$	4,848	$	-		$	-	$	4,848
Schedule Of Carrying Amounts And Fair Values Of Financial Instruments [Table Text Block]					As of March 31, 2015					As of December 31, 2014
					Carrying		Fair			Carrying		Fair
		(Amounts in thousands)			Amount		Value			Amount		Value
			Cash equivalents		$	526,218	$	526,000		$	749,418	$	749,000
			Mortgage and mezzanine loans receivable			-		-			16,748		17,000
					$	526,218	$	526,000		$	766,166	$	766,000
			Debt:
				Mortgages payable	$	8,316,793	$	8,334,000		$	8,263,165	$	8,224,000
				Senior unsecured notes		847,332		898,000			1,347,159		1,385,000
				Revolving credit facility debt		400,000		400,000			-		-
					$	9,564,125	$	9,632,000		$	9,610,324	$	9,609,000
Real Estate Fund [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]
									Weighted Average
						Range			(based on fair value of investments)
		Unobservable Quantitative Input				31-Mar-15	31-Dec-14		31-Mar-15		31-Dec-14
			Discount rates			12.0% to 14.5%	12.0% to 17.5%		13.40%		13.70%
			Terminal capitalization rates			4.8% to 6.5%	4.7% to 6.5%		5.50%		5.30%
Summary of Changes in Level 3 Plan Assets [Table Text Block]					Real Estate Fund Investments
					For the Three Months Ended March 31,
		(Amounts in thousands)			2015		2014
		Beginning balance			$	513,973	$	667,710
		Purchases				95,000		123
		Dispositions / Distributions				-72,186		-
		Net unrealized gains				16,213		14,169
		Net realized gains				1,426		-
		Ending balance			$	554,426	$	682,002
Deferred Compensation Plan Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Summary of Changes in Level 3 Plan Assets [Table Text Block]					Deferred Compensation Plan Assets
					For the Three Months Ended March 31,
		(Amounts in thousands)			2015		2014
		Beginning balance			$	63,315	$	68,782
		Purchases				624		1,644
		Sales				-438		-5,124
		Realized and unrealized gain				1,335		2,172
		Other, net				-		153
		Ending balance			$	64,836	$	67,627

Fee_and_Other_Income_Tables

Fee and Other Income (Tables)	3 Months Ended
	Mar. 31, 2015
Fee And Other Income Tables [Abstract]
Fee and Other Income (Table)			For the Three Months
		(Amounts in thousands)	Ended March 31,
			2015		2014
		BMS cleaning fees	$	22,633	$	18,956
		Management and leasing fees		4,192		5,828
		Lease termination fees		3,747		3,577
		Other income		9,035		7,579
			$	39,607	$	35,940

Interest_and_Other_Investment_1

Interest and Other Investment Income, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Interest and Other Investment Income, Net [Abstract]
Schedule Of Interest And Other Investment Income Net [Table Text Block]				For the Three Months
		(Amounts in thousands)		Ended March 31,
				2015		2014
		Dividends and interest on marketable securities		$	3,203	$	3,106
		Mark-to-market of investments in our deferred compensation plan (1)			2,859		4,400
		Interest on mezzanine loans receivable			1,674		2,384
		Other, net			3,056		1,960
				$	10,792	$	11,850
		-1	This income is entirely offset by the expense resulting from the mark-to-market of the deferred compensation plan liability, which is included in "general and administrative" expense.

Interest_and_Debt_Expense_Tabl

Interest and Debt Expense (Tables)	3 Months Ended
	Mar. 31, 2015
Interest Expense Debt [Abstract]
Interest And Debt Expense [Table Text Block]			For the Three Months
		(Amounts in thousands)	Ended March 31,
			2015		2014
		Interest expense	$	95,328	$	105,512
		Amortization of deferred financing costs		7,456		4,422
		Capitalized interest and debt expense		-11,110		-13,622
			$	91,674	$	96,312

Income_Per_Share_Tables

Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Income Per Share [Abstract]
Schedule Of Earnings Per Share Basic And Diluted [Text Block]				For the Three Months
	(Amounts in thousands, except per share amounts)			Ended March 31,
				2015		2014
	Numerator:
		Income from continuing operations, net of income attributable
			to noncontrolling interests	$	89,166	$	74,743
		Income from discontinued operations, net of income attributable
			to noncontrolling interests		14,911		7,974
		Net income attributable to Vornado			104,077		82,717
		Preferred share dividends			-19,484		-20,368
		Net income attributable to common shareholders			84,593		62,349
		Earnings allocated to unvested participating securities			-19		-30
		Numerator for diluted income per share		$	84,574	$	62,319
	Denominator:
		Denominator for basic income per share – weighted average shares			187,999		187,307
		Effect of dilutive securities(1):
			Employee stock options and restricted share awards		1,337		933
		Denominator for diluted income per share – weighted average
			shares and assumed conversions		189,336		188,240
	INCOME PER COMMON SHARE – BASIC:
		Income from continuing operations, net		$	0.37	$	0.29
		Income from discontinued operations, net			0.08		0.04
		Net income per common share		$	0.45	$	0.33
	INCOME PER COMMON SHARE – DILUTED:
		Income from continuing operations, net		$	0.37	$	0.29
		Income from discontinued operations, net			0.08		0.04
		Net income per common share		$	0.45	$	0.33
	-1		The effect of dilutive securities in the three months ended March 31, 2015 and 2014 excludes an aggregate of 11,488 and 11,326 weighted average common share equivalents, respectively, as their effect was anti-dilutive.

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of Segment Information
	(Amounts in thousands)			For the Three Months Ended March 31, 2015
					Total		New York			Washington, DC			Other
	Total revenues				$	606,802	$	399,513		$	133,968		$	73,321
	Total expenses					439,088		252,760			92,997			93,331
	Operating income (loss)					167,714		146,753			40,971			-20,010
	(Loss) income from partially owned entities					-2,405		-5,663			131			3,127
	Income from real estate fund investments					24,089		-			-			24,089
	Interest and other investment income, net					10,792		1,862			13			8,917
	Interest and debt expense					-91,674		-45,351			-18,160			-28,163
	Net gain on disposition of wholly owned and partially
		owned assets				1,860		-			-			1,860
	Income (loss) before income taxes					110,376		97,601			22,955			-10,180
	Income tax (expense) benefit					-971		-943			674			-702
	Income (loss) from continuing operations					109,405		96,658			23,629			-10,882
	Income from discontinued operations					15,841		-			-			15,841
	Net income					125,246		96,658			23,629			4,959
	Less net income attributable to noncontrolling interests					-21,169		-1,506			-			-19,663
	Net income (loss) attributable to Vornado					104,077		95,152			23,629			-14,704
	Interest and debt expense(2)					114,675		58,667			21,512			34,496
	Depreciation and amortization(2)					156,450		94,124			40,752			21,574
	Income tax (benefit) expense (2)					-739		1,002			-2,636			895
	EBITDA(1)				$	374,463	$	248,945	(3)	$	83,257	(4)	$	42,261	(5)
	(Amounts in thousands)				For the Three Months Ended March 31, 2014
					Total		New York			Washington, DC			Other
	Total revenues				$	562,381	$	361,184		$	135,278		$	65,919
	Total expenses					417,140		237,734			89,572			89,834
	Operating income (loss)					145,241		123,450			45,706			-23,915
	Income (loss) from partially owned entities					1,979		1,566			-1,266			1,679
	Income from real estate fund investments					18,148		-			-			18,148
	Interest and other investment income, net					11,850		1,441			36			10,373
	Interest and debt expense					-96,312		-42,839			-19,347			-34,126
	Net gain on disposition of wholly owned and partially
		owned assets				9,635		-			-			9,635
	Income (loss) before income taxes					90,541		83,618			25,129			-18,206
	Income tax (expense) benefit					-851		-969			199			-81
	Income (loss) from continuing operations					89,690		82,649			25,328			-18,287
	Income from discontinued operations					8,466		5,867			-			2,599
	Net income (loss)					98,156		88,516			25,328			-15,688
	Less net income attributable to noncontrolling interests					-15,439		-1,405			-			-14,034
	Net income (loss) attributable to Vornado					82,717		87,111			25,328			-29,722
	Interest and debt expense(2)					170,952		58,068			22,798			90,086
	Depreciation and amortization(2)					196,339		87,587			36,150			72,602
	Income tax expense (benefit)(2)					19,831		1,032			-189			18,988
	EBITDA(1)				$	469,839	$	233,798	(3)	$	84,087	(4)	$	151,954	(5)
	See notes on the following page.
		Notes to preceding tabular information:
	-1	EBITDA represents "Earnings Before Interest, Taxes, Depreciation and Amortization." We consider EBITDA a supplemental non-GAAP financial measure for making decisions and assessing the unlevered performance of our segments as it relates to the total return on assets as opposed to the levered return on equity. As properties are bought and sold based on a multiple of EBITDA, we utilize this measure to make investment decisions as well as to compare the performance of our assets to that of our peers. EBITDA should not be considered a substitute for net income. EBITDA may not be comparable to similarly titled measures employed by other companies.
	-2	Interest and debt expense, depreciation and amortization and income tax expense (benefit) in the reconciliation of net income (loss) to EBITDA includes our share of these items from partially owned entities.
	-3	The elements of "New York" EBITDA are summarized below.
								For the Three Months
								Ended March 31,
		(Amounts in thousands)						2015			2014
		Office						$	159,359		$	157,879
		Retail							81,305			66,195
		Alexander's							10,407			10,430
		Hotel Pennsylvania							-2,126			-706
			Total New York					$	248,945		$	233,798
	-4	The elements of "Washington, DC" EBITDA are summarized below.
								For the Three Months
								Ended March 31,
		(Amounts in thousands)						2015			2014
		Office, excluding the Skyline Properties						$	67,385		$	67,257
		Skyline properties							6,055			6,499
		Total Office						73,440			73,756
	Residential							9,817			10,331
		Total Washington, DC					$	83,257		$	84,087
Details of Other EBITDA
		Notes to preceding tabular information - continued:
	-5	The elements of "other" EBITDA are summarized below.
								For the Three Months
								Ended March 31,
		(Amounts in thousands)						2015			2014
		Our share of Real Estate Fund:
			Income before net realized/unrealized gains					$	1,614		$	1,982
			Net realized/unrealized gains on investments						5,548			3,542
			Carried interest						3,388			1,775
		Total							10,550			7,299
		The Mart and trade shows							21,041			19,087
		555 California Street							12,401			12,066
		India real estate ventures							1,841			1,824
		Our share of Toys "R" Us(a)							-			83,550
		Other investments							9,109			9,447
									54,942			133,273
		Corporate general and administrative expenses(b)							-35,942			-25,982
		Investment income and other, net(b)							8,762			8,073
		Urban Edge Properties and residual retail properties discontinued operations(c)							19,907			32,100
		Acquisition and transaction related costs							-1,981			-1,285
		Net gain on sale of residential condominiums and a land parcel							1,860			9,635
		Net income attributable to noncontrolling interests in the Operating Partnership							-5,287			-3,860
								$	42,261		$	151,954
		(a)		As a result of our investment being reduced to zero, we suspended equity method accounting in the third quarter of 2014 (see Note 7 - Investments in Partially Owned Entities). The three months ended March 31, 2014 includes an impairment loss of $75,196.
		(b)		The amounts in these captions (for this table only) exclude income/expense from the mark-to-market of our deferred compensation plan of $2,859 and $4,400 for the three months ended March 31, 2015 and 2014, respectively. The three months ended March 31, 2015 include $8,817 from the acceleration of the recognition of compensation expense related to 2013-2015 Out-Performance Plans due to the modification of the vesting criteria of awards such that they will fully vest at age 65. The accelerated expense will result in lower general and administrative expense for the remainder of 2015 of $2,600 and $6,217 thereafter.
		(c)		The three months ended March 31, 2015 and 2014, include $22,645 and $499, respectively, of transaction costs related to the spin-off of our strip shopping centers and malls (see Note 1 - Organization).

Organization_Details

Organization (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 15, 2015
Organization and Business [Abstract]
Common limited partnership interest in the Operating Partnership	93.90%
Real Estate Properties [Line Items]
Cash Considerations Transferred During Spin Off (in US Dollars)	$225,000,000	$0
Maximum [Member]
Real Estate Properties [Line Items]
Duration Of Administrative Services			2 years
Vornado Realty Trust [Member]
Real Estate Properties [Line Items]
Number of shares/units convered during spin off for 1 share of UE			2
Urban Edge Properties [Member]
Real Estate Properties [Line Items]
Cash Considerations Transferred During Spin Off (in US Dollars)			225,000,000
Partnership Units received during spin off			5,717,184
Number of new shares issued during spin off for every 2 shares/units of Vornado and Vornado L.P.			1
Equity method ownership percentage			5.40%
Urban Edge Properties [Member] | Retail Segment Strip Shopping Centers [Member]
Real Estate Properties [Line Items]
Number Of Real Estate Properties			79
Urban Edge Properties [Member] | Retail Segment Regional Malls [Member]
Real Estate Properties [Line Items]
Number Of Real Estate Properties			3
Warehouse [Member] | Urban Edge Properties [Member]
Real Estate Properties [Line Items]
Number Of Real Estate Properties			1

Basis_of_Presentation_Details

Basis of Presentation (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Property Plant And Equipment [Line Items]
Reclassification of signage revenue from fee and other income to property rentals	$9,300

Acquisitions_Narratives_Detail

Acquisitions (Narratives) (Details) (USD $)	0 Months Ended
	Mar. 02, 2015	Mar. 18, 2015	Mar. 31, 2015	Dec. 31, 2014	Jan. 20, 2015	Apr. 08, 2015
		sqft			LimitedPartners	sqft
Business Acquisition [Line Items]
Mortgages payable			$8,316,793,000	$8,263,165,000
Real Estate Fund [Member]
Business Acquisition [Line Items]
Number Of Limited Partners					1
Office Building [Member] | Joint Venture [Member] | Subsequent Event [Member] | 510 West 22nd Street [Member]
Business Acquisition [Line Items]
Equity method ownership percentage						55.00%
Square Footage Of Real Estate Property						173,000
Refundable Deposit						11,000,000
New York Segment [Member] | Retail Properties [Member] | Penn Plaza Submaket [Member]
Business Acquisition [Line Items]
Business Acquisition Cost Of Acquired Entity	355,000,000
Non Refundable Deposit	25,000,000
Center Building [Member] | New York Segment [Member] | Office Building [Member]
Business Acquisition [Line Items]
Square Footage Of Real Estate Property		437,000
Business Acquisition Cost Of Acquired Entity		142,000,000
Mortgages payable		$62,000,000
Interest Rate, End of Period (in percentage)		4.43%
Debt Instrument Maturity		Oct-18
Crowne Plaza Time Square Hotel [Member] | Real Estate Fund Joint Venture [Member]
Business Acquisition [Line Items]
Equity method ownership percentage					57.00%

Vornado_Capital_Partners_Real_2

Vornado Capital Partners Real Estate Fund (the "Fund") (Narratives) (Details) (USD $)	3 Months Ended		0 Months Ended	35 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 20, 2015	Mar. 25, 2015	Dec. 31, 2014
	Investments
Investment Holdings [Line Items]
Aggregate fair value of Real Estate Fund investments (in US Dollars)	$554,426,000				$513,973,000
Mortgages payable (in US Dollars)	8,316,793,000				8,263,165,000
Real Estate Fund [Member]
Investment Holdings [Line Items]
Aggregate fair value of Real Estate Fund investments (in US Dollars)	554,426,000
Net realized gain on sale of investment	24,705,000	0
Number Of Limited Partners			1
Term of the Fund, years	8 years
Investment period for commitments of the Fund, years	3 years
Number Of Investments Held By Fund	6
Excess of fair value over cost	169,832,000
Unfunded Commitments Of Fund	102,324,000
Vornado Realty Trust [Member]
Investment Holdings [Line Items]
Unfunded Commitments Of Fund	25,581,000
Crowne Plaza Time Square Hotel [Member]
Investment Holdings [Line Items]
Equity method ownership percentage			33.00%		11.00%
Crowne Plaza Time Square Hotel [Member] | Real Estate Fund Joint Venture [Member]
Investment Holdings [Line Items]
Equity method ownership percentage			57.00%
Aggregate fair value of Real Estate Fund investments (in US Dollars)			480,000,000
Mortgages payable (in US Dollars)			310,000,000
Debt Instrument, Description of Variable Rate Basis			LIBOR
Spread Over LIBOR (in percentage)			2.80%
Debt Instrument Maturity			Dec-18
Length Of Extension Available			1 year
Business Acquisition Cost Of Acquired Entity			95,000,000
Crowne Plaza Time Square Hotel [Member] | Vornado Realty Trust [Member]
Investment Holdings [Line Items]
Business Acquisition Cost Of Acquired Entity			39,000,000
520 Broadway [Member] | Real Estate Fund [Member]
Investment Holdings [Line Items]
Net realized gain on sale of investment				24,705,000
Proceeds from sale of real estate				$91,650,000

Vornado_Capital_Partners_Real_3

Vornado Capital Partners Real Estate Fund (the "Fund") (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Details Of Income From Real Estate Funds [Abstract]
Income from real estate fund investments	$24,089	$18,148
Less income attributable to noncontrolling interests	-15,882	-11,579
Fee And Other Income	39,607	35,940
Real Estate Fund [Member]
Details Of Income From Real Estate Funds [Abstract]
Net investment income	6,450	3,979
Net realized gains on exited investments	24,705	0
Previously recorded unrealized gains on exited investments	-23,279	0
Net unrealized gains on held investments	16,213	14,169
Income from real estate fund investments	24,089	18,148
Less income attributable to noncontrolling interests	-13,539	-10,849
Income From Real Estate Fund Attributable To Vornado	10,550	7,299
Fee And Other Income	$704	$618

Marketable_Securities_Details

Marketable Securities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Equity Securities	$184,991	$206,323
Available-for-sale Equity Securities, Amortized Cost Basis	72,549	72,549
Available-for-sale Securities, Gross Unrealized Gain	112,442	133,774
Lexington Realty Trust [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Equity Securities	181,550	202,789
Available-for-sale Equity Securities, Amortized Cost Basis	72,549	72,549
Available-for-sale Securities, Gross Unrealized Gain	109,001	130,240
Other Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Equity Securities	3,441	3,534
Available-for-sale Equity Securities, Amortized Cost Basis	0	0
Available-for-sale Securities, Gross Unrealized Gain	$3,441	$3,534

Investments_in_Partially_Owned2

Investments in Partially Owned Entities (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Jan. 31, 2015	Mar. 31, 2014	Feb. 01, 2014	Dec. 31, 2014	Nov. 01, 2014	Sep. 30, 2014
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entities	$1,408,214,000				$1,246,496,000
Comprehensive Income Net of Tax	83,419,000		88,806,000
Income (Loss) From Equity Method Investments	-2,405,000		1,979,000
Impairment Losses	256,000		20,842,000
Toys R Us [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	32.60%
Equity in net income			75,196,000
Carrying amount of investments in partially owned entities	0				0		0
Income (Loss) From Equity Method Investments	1,454,000		1,847,000
Non-cash impairment losses	355,953,000
Condensed Financial Information For Equity Method Investments [Abstract]
Assets		9,958,000,000				11,267,000,000
Liabilities		9,014,000,000				10,377,000,000
Noncontrolling interests		85,000,000				82,000,000
Equity		859,000,000				808,000,000
Total revenue		4,983,000,000		5,267,000,000
Net income attributable to investee		193,700,000		82,500,000
Equity Method Investment, Difference Excess Of Underlying Equity Over Carrying Amount	279,936,000
Toys R Us [Member] | Equity In Net Income After Income Taxes [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) From Equity Method Investments	0		75,196,000
Toys R Us [Member] | Management Fees [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) From Equity Method Investments	1,454,000		1,847,000
Toys R Us [Member] | Impairment Loss [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) From Equity Method Investments	0		-75,196,000
Alexanders Inc [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	32.40%
Carrying amount of investments in partially owned entities	132,143,000				131,616,000
Excess of investee's carrying amount over equity in net assets	41,048,000
Income (Loss) From Equity Method Investments	7,691,000		6,385,000
Condensed Financial Information For Equity Method Investments [Abstract]
Assets	1,433,000,000				1,423,000,000
Liabilities	1,084,000,000				1,075,000,000
Equity	349,000,000				348,000,000
Total revenue	52,000,000		49,000,000
Net income attributable to investee	18,000,000		15,000,000
Alexanders Inc [Member] | Equity In Net Income After Income Taxes [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) From Equity Method Investments	5,594,000		4,759,000
Alexanders Inc [Member] | Management Leasing And Development Fees [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Income (Loss) From Equity Method Investments	2,097,000		1,626,000
India real estate ventures [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entities	67,159,000				76,752,000
Income (Loss) From Equity Method Investments	-109,000		-137,000
India real estate ventures [Member] | Minimum [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	4.10%
India real estate ventures [Member] | Maximum [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	36.50%
Partially owned office buildings [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entities	766,074,000				760,749,000
Income (Loss) From Equity Method Investments	-9,296,000		-2,395,000
Urban Edge Properties [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	5.40%
Carrying amount of investments in partially owned entities	25,206,000				0
Income (Loss) From Equity Method Investments	584,000		0
PREIT Associates [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Equity method ownership percentage	8.10%
Carrying amount of investments in partially owned entities	144,681,000				0
Other equity method investments [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Carrying amount of investments in partially owned entities	272,951,000				277,379,000
Income (Loss) From Equity Method Investments	($2,729,000)		($3,721,000)

Investments_in_Partially_Owned3

Investments in Partially Owned Entities (Alexander's Inc.) (Details) (Alexanders Inc [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Alexanders Inc [Member]
Equity Method Investments And Income From Equity Method Investments [Abstract]
Ownership common shares, investee (in shares)	1,654,068
Equity method ownership percentage	32.40%
Closing share price (in dollars per share)	$456.58
Equity Method Investment Market Value	$755,214,000
Excess of investee's fair value over carrying amount	623,071,000
Excess of investee's carrying amount over equity in net assets	41,048,000
Condensed Financial Information For Equity Method Investments [Abstract]
Assets	1,433,000,000		1,423,000,000
Liabilities	1,084,000,000		1,075,000,000
Equity	349,000,000		348,000,000
Total revenue	52,000,000	49,000,000
Net income attributable to investee	$18,000,000	$15,000,000

Investments_in_Partially_Owned4

Investments in Partially Owned Entities (Urban Edge Properties and PREIT Associates L.P.) (Details) (USD $)	0 Months Ended
	Jan. 15, 2015	Mar. 31, 2015
Urban Edge Properties [Member]
Schedule Of Equity Method Investments [Line Items]
Operating Partnership Units Received From Buyer	5,717,184
Equity method ownership percentage	5.40%
Pennsylavenia Real Estate Investment Trust [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage		8.10%
Payments for tenant improvements and allowances		$19,000,000
Pennsylavenia Real Estate Investment Trust [Member] | Retail Springfield Mall [Member] | Retail Segment Regional Malls [Member]
Schedule Of Equity Method Investments [Line Items]
Operating Partnership Units Received From Buyer		6,250,000
Square Footage Of Real Estate Property		1,350,000
Gross proceeds from sale of real estate		485,313,000
Cash Proceeds from sale of real estate		340,000,000
Operating Partnership Units Value		145,313,000
Operating Partnership Unis Value Per Unit		$23.25
Payments for tenant improvements and allowances		$19,000,000

Dispositions_Narratives_Detail

Dispositions (Narratives) (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Jan. 15, 2015	Mar. 31, 2018	Mar. 13, 2015
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Cash Considerations Transferred During Spin Off (in US Dollars)	$225,000,000	$0
Gain on sale of interest in leases	21,376,000	0
Net gains on sale of real estate	10,867,000	0
Impairment Losses	256,000	20,842,000
Pennsylavenia Real Estate Investment Trust [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Net gains on sale of real estate			631,000
Urban Edge Properties [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Cash Considerations Transferred During Spin Off (in US Dollars)				225,000,000
Retail Segment Strip Shopping Centers [Member] | Urban Edge Properties [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Number Of Real Estate Properties				79
Retail Segment Regional Malls [Member] | Urban Edge Properties [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Number Of Real Estate Properties				3
Warehouse [Member] | Urban Edge Properties [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Number Of Real Estate Properties				1
Retail Springfield Mall [Member] | Retail Segment Regional Malls [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Net gains on sale of real estate	7,192,000		7,823,000
Impairment Losses		20,000,000
Retail Springfield Mall [Member] | Retail Segment Regional Malls [Member] | Scenario Forecast [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Additional Consideration Receivable Percent					50.00%
Additional Consideration Theshold, Value					465,000,000
Capitalization rate					5.50%
Retail Springfield Mall [Member] | Retail Segment Regional Malls [Member] | Pennsylavenia Real Estate Investment Trust [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Square Footage Of Real Estate Property	1,350,000		1,350,000
Gross proceeds from the sale of real estate			485,313,000
Cash Proceeds from sale of real estate			340,000,000
Geary Street, CA [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Proceeds from Sale of interest in leases						34,189,000
Gain on sale of interest in leases						21,376,000
Retail Properties Segment [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]
Number Of Real Estate Properties Sold	5
Cash Proceeds from sale of real estate			10,731,000
Net gains on sale of real estate	$3,675,000

Dispositions_Details_1

Dispositions (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract
Real Estate, Net	$27,199		$2,028,677
Other Assets	8,143		209,797
Assets related to discontinued operations	35,342		2,238,474
Mortgages Payable	0		1,288,535
Other liabilities (primarily deferred revenue in 2014)	11,354		222,827
Liabilities related to discontinued operations	11,354		1,511,362
Discontinued Operation, Income (Loss) from Discontinued Operations Disclosure [Abstract]
Total revenues	19,958	106,563
Total expenses	13,373	76,025
Income from discontinued operations before gain on sale of real estate	6,585	30,538
Net gain on sale of lease position in Geary Street, CA	21,376	0
Net gains on sale of real estate	10,867	0
Transaction related costs	-22,645	-499
Impairment losses	-256	-20,842
Pretax income from discontinued operations	15,927	9,197
Income tax expense	-86	-731
Income from discontinued operations	15,841	8,466
Cash flows related to discontinued operations:
Cash flows from operating activities, discontinued operations	-36,672	15,535
Cash flows from investing activities, discontinued operations	$310,069	($30,397)

Identified_Intangible_Assets_a2

Identified Intangible Assets and Intangible Liabilities (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets and Liabilities [Line Items]
Gross amount	$429,909		$424,976
Accumulated amortization	-200,330		-199,821
Net	229,579		225,155
Gross amount	620,891		657,976
Accumulated amortization	-304,929		-329,775
Net	315,962		328,201
Below Market Leases Net Of Above Market Leases [Member]
Finite-Lived Intangible Assets and Liabilities [Line Items]
Amortization of Intangible Assets	12,450	9,712
2016	36,804
2017	34,829
2018	33,546
2019	23,514
2020	21,505
Other Identified Intangible Assets [Member]
Finite-Lived Intangible Assets and Liabilities [Line Items]
Amortization of Intangible Assets	6,185	8,891
2016	22,523
2017	17,692
2018	13,373
2019	11,425
2020	10,651
Tenant Under Ground Leases [Member]
Finite-Lived Intangible Assets and Liabilities [Line Items]
Amortization of Intangible Assets	458	458
2016	1,832
2017	1,832
2018	1,832
2019	1,832
2020	$1,832

Debt_Narratives_Details

Debt (Narratives) (Details) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Apr. 30, 2015	Jan. 31, 2015	Dec. 31, 2014
			Properties
			ResidentialUnits
Debt Instrument [Line Items]
Proceeds from borrowings	$800,000,000	$600,000,000
Mortgages payable (in US Dollars)	8,316,793,000				8,263,165,000
Washington DC River House Apartments [Member] | Mortgages Maturing April 2015 [Member]
Debt Instrument [Line Items]
Interest Rate, End of Period (in percentage)	5.43%
Debt Instrument Maturity	Apr-15
Mortgages payable (in US Dollars)	195,000,000
Washington DC River House Apartments [Member] | Mortgages Maturing 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis	LIBOR
Spread Over LIBOR (in percentage)	1.53%
Debt Instrument Maturity	2018
Mortgages payable (in US Dollars)	64,000,000
Washington DC River House Apartments [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Notes And Loans Payable Refinanced Amount (in US Dollars)			308,000,000
Number Of Apartment Buildings			3
Number Of Units			1,670
Debt Instrument, Description of Variable Rate Basis			LIBOR
Spread Over LIBOR (in percentage)			1.28%
Debt Instrument Maturity			2025
Proceeds from borrowings			43,000,000
Senior Unsecured Notes 4.25% [Member]
Debt Instrument [Line Items]
Redemption of senior unsecured notes				$500,000,000
Interest Rate, End of Period (in percentage)				4.25%
Debt Instrument, Maturity Date				1-Apr-15
Redemption Price, Percentage of Principal Amount Redeemed				100.00%

Debt_Summary_of_Debt_Details

Debt (Summary of Debt) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Mortgages payable (in US Dollars)	$8,316,793,000	$8,263,165,000
Senior unsecured notes	847,332,000	1,347,159,000
Revolving credit facility debt	400,000,000	0
Notes And Mortgages Payable Fixed Rate [Member]
Debt Instrument [Line Items]
Mortgages payable (in US Dollars)	6,553,924,000	6,499,396,000
Interest Rate, End of Period (in percentage)	4.46%
Notes And Mortgages Payable Variable Rate [Member]
Debt Instrument [Line Items]
Mortgages payable (in US Dollars)	1,762,869,000	1,763,769,000
Interest Rate, End of Period (in percentage)	2.21%
Total Notes And Mortgages Payable [Member]
Debt Instrument [Line Items]
Mortgages payable (in US Dollars)	8,316,793,000	8,263,165,000
Interest Rate, End of Period (in percentage)	3.99%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes	847,332,000	1,347,159,000
Interest Rate, End of Period (in percentage)	3.68%
Unsecured Revolving Credit Facilities [Member]
Debt Instrument [Line Items]
Revolving credit facility debt	400,000,000	0
Interest Rate, End of Period (in percentage)	1.23%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Unsecured Debt And Revolving Credit Facility	$1,247,332,000	$1,347,159,000
Interest Rate, End of Period (in percentage)	3.39%

Redeemable_Noncontrolling_Inte2

Redeemable Noncontrolling Interests (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Redeemable Noncontrolling Interest Units Table [Abstract]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	$1,303,790		$1,336,780
Redeemable Noncontrolling Interests Rollforward [Abstract]
Reedemable Noncontrolling Interest, Beginning Balance	1,337,780	1,003,620
Net income	5,287	3,860
Other comprehensive income (loss)	-1,288	361
Distributions	-7,280	-8,383
Other, net	19,133	9,592
Reedemable Noncontrolling Interest, Ending Balance	1,304,790	1,140,831
Common Class A [Member]
Redeemable Noncontrolling Interest Units Table [Abstract]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	1,303,790		1,336,780
Redeemable Noncontrolling Interests Rollforward [Abstract]
Redemption of Class A units for common shares, at redemption value	-23,493	-5,156
Adjustment to carry Class A redeemable units at redemption value	-25,349	136,937
Cumulative Redeemable Preferred Unit [Member]
Redeemable Noncontrolling Interests Additional Disclosure [Abstract]
Fair value of Series G convertible preferred units and Series D-13 cumulative redeemable preferred units	$55,097		$55,097

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income ("AOCI") (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated other comprehensive (loss) income, Beginning Balance	$93,267	$71,537
OCI before reclassifications	-20,658	6,089
Amounts reclassified from AOCI	0	0
Net current period OCI	-20,658	6,089
Accumulated other comprehensive (loss) income, Ending Balance	72,609	77,626
Interest rate Swap [Member]
Accumulated other comprehensive (loss) income, Beginning Balance	-25,803	-31,882
OCI before reclassifications	-776	1,610
Amounts reclassified from AOCI	0	0
Net current period OCI	-776	1,610
Accumulated other comprehensive (loss) income, Ending Balance	-26,579	-30,272
Securities available for sale [Member]
Accumulated other comprehensive (loss) income, Beginning Balance	133,774	119,309
OCI before reclassifications	-21,332	13,125
Amounts reclassified from AOCI	0	0
Net current period OCI	-21,332	13,125
Accumulated other comprehensive (loss) income, Ending Balance	112,442	132,434
Pro Rata Share Of Non Consolidated Subsidiaries Oci [Member]
Accumulated other comprehensive (loss) income, Beginning Balance	-8,992	-11,501
OCI before reclassifications	157	-8,286
Amounts reclassified from AOCI	0	0
Net current period OCI	157	-8,286
Accumulated other comprehensive (loss) income, Ending Balance	-8,835	-19,787
Other [Member]
Accumulated other comprehensive (loss) income, Beginning Balance	-5,712	-4,389
OCI before reclassifications	1,293	-360
Amounts reclassified from AOCI	0	0
Net current period OCI	1,293	-360
Accumulated other comprehensive (loss) income, Ending Balance	($4,419)	($4,749)

Variable_Interest_Entities_Det

Variable Interest Entities (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2015
In Thousands, unless otherwise specified
Consolidated Variable Interest Entities [Member] | Independence Plaza And Warner Building [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net	$0
Consolidated Variable Interest Entities [Member] | One Park Avenue, Independence Plaza, And Warner Building [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net		0
Non Consolidated Variable Interest Entities [Member] | Independence Plaza And Warner Building [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	286,783
Non Consolidated Variable Interest Entities [Member] | One Park Avenue, Independence Plaza, And Warner Building [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets		$286,876

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narratives) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
	Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate fund investments	$554,426	$513,973
Real Estate Fund [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number Of Investments Held By Fund	6
Real estate fund investments	554,426
Excess of fair value over cost	$169,832
Real Estate Fund [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Anticipated Investment Holding Period	0 years 9 months 18 days
Real Estate Fund [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Anticipated Investment Holding Period	5 years 9 months 18 days

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities	$184,991	$206,323
Real Estate Fund Nondepreciable Real Estate	554,426	513,973
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities	184,991	206,323
Real Estate Fund Nondepreciable Real Estate	554,426	513,973
Deferred Compensation Plan Assets	121,530	117,284
Total assets	860,947	837,580
Mandatorily redeemable instruments (included in other liabilities)	55,097	55,097
Interest rate swap (included in other liabilities)	26,574	25,797
Total liabilities	81,671	80,894
Other Partners Ownership Interest In Real Estate Fund (in percentage)	75.00%	75.00%
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real Estate, Net at Fair Value		4,848
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities	184,991	206,323
Real Estate Fund Nondepreciable Real Estate	0	0
Deferred Compensation Plan Assets	56,694	53,969
Total assets	241,685	260,292
Mandatorily redeemable instruments (included in other liabilities)	55,097	55,097
Interest rate swap (included in other liabilities)	0	0
Total liabilities	55,097	55,097
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real Estate, Net at Fair Value		0
Fair Value Inputs Level 2 Member | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities	0	0
Real Estate Fund Nondepreciable Real Estate	0	0
Deferred Compensation Plan Assets	0	0
Total assets	0	0
Mandatorily redeemable instruments (included in other liabilities)	0	0
Interest rate swap (included in other liabilities)	26,574	25,797
Total liabilities	26,574	25,797
Fair Value Inputs Level 2 Member | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real Estate, Net at Fair Value		0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities	0	0
Real Estate Fund Nondepreciable Real Estate	554,426	513,973
Deferred Compensation Plan Assets	64,836	63,315
Total assets	619,262	577,288
Mandatorily redeemable instruments (included in other liabilities)	0	0
Interest rate swap (included in other liabilities)	0	0
Total liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real Estate, Net at Fair Value		$4,848

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 1) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Real Estate Fund [Member]
Unobservable Quantitative Input [Abstract]
Opening Balance - changes in Level 3 " deferred compensation plan assets"	$513,973	$667,710	667,710
Purchases	95,000	123
Sales/Dispositions/Distributions	-72,186	0
Net unrealized gains	16,213	14,169
Net realized gains	1,426	0
Closing Balance - changes in Level 3 " deferred compensation plan assets"	554,426	682,002
Real Estate Fund [Member] | Minimum [Member]
Unobservable Quantitative Input [Abstract]
Discount rates	12.00%		12.00%
Capitalization rate	4.80%		4.70%
Fair Value Measurement Anticipated Investment Holding Period	0 years 9 months 18 days
Real Estate Fund [Member] | Maximum [Member]
Unobservable Quantitative Input [Abstract]
Discount rates	14.50%		17.50%
Capitalization rate	6.50%		6.50%
Fair Value Measurement Anticipated Investment Holding Period	5 years 9 months 18 days
Real Estate Fund [Member] | Weighted Average [Member]
Unobservable Quantitative Input [Abstract]
Discount rates	13.40%		13.70%
Capitalization rate	5.50%		5.30%
Deferred Compensation Plan Assets [Member]
Unobservable Quantitative Input [Abstract]
Opening Balance - changes in Level 3 " deferred compensation plan assets"	63,315	68,782	68,782
Purchases	624	1,644
Sales/Dispositions/Distributions	-438	-5,124
Realized and unrealized gain (loss)	1,335	2,172
Other, net	0	-153
Closing Balance - changes in Level 3 " deferred compensation plan assets"	$64,836	$67,627

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 2) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior unsecured notes	$847,332	$1,347,159
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	526,218	749,418
Mortgage and mezzanine loans receivable	0	16,748
Total assets	526,218	766,166
Mortgages payable	8,316,793	8,263,165
Senior unsecured notes	847,332	1,347,159
Revolving credit facility debt	400,000	0
Total debt	9,564,125	9,610,324
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	526,000	749,000
Mortgage and mezzanine loans receivable	0	17,000
Total assets	526,000	766,000
Mortgages payable	8,334,000	8,224,000
Senior unsecured notes	898,000	1,385,000
Revolving credit facility debt	400,000	0
Total debt	$9,632,000	$9,609,000

Incentive_Compensation_Narrati

Incentive Compensation (Narratives) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Expense	$20,142	$11,024

Fee_and_Other_Income_Details

Fee and Other Income (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Fee And Other Income [Line Items]
BMS cleaning fees	$22,633	$18,956
Management and leasing fees	4,192	5,828
Lease termination fees	3,747	3,577
Other income	9,035	7,579
Fee and other income	39,607	35,940
Interstate Properties [Member]
Fee And Other Income [Line Items]
Management and leasing fees	$139	$134

Interest_and_Other_Investment_2

Interest and Other Investment Income, Net (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Dividends and interest on marketable securities	$3,203	$3,106
Mark-to-market of investments in our deferred compensation plan	2,859	4,400
Interest on mezzanine loans receivable	1,674	2,384
Other, net	3,056	1,960
Interest and other investment (loss) income, net	$10,792	$11,850

Interest_and_Debt_Expense_Deta

Interest and Debt Expense (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest Expense Debt [Abstract]
Interest expense	$95,328	$105,512
Amortization of deferred financing costs	7,456	4,422
Capitalized interest and debt expenses	-11,110	-13,622
Interest and Debt Expense, Total	$91,674	$96,312

Income_Per_Share_Details

Income Per Share (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Per Share [Abstract]
Income from continuing operations, net of income attributable to noncontrolling interests	$89,166	$74,743
Income from discontinued operations, net of income attributable to noncontrolling interests	14,911	7,974
Net income attributable to Vornado	104,077	82,717
Preferred share dividends	-19,484	-20,368
Net income attributable to common shareholders	84,593	62,349
Earnings allocated to unvested participating securities	-19	-30
Numerator for diluted income per share	$84,574	$62,319
Denominator for basic income per share - weighted average shares (in shares)	187,999	187,307
Employee stock options and restricted share awards (in shares)	1,337	933
Denominator for diluted income per share - weighted average shares and assumed conversions (in shares)	189,336	188,240
INCOME PER COMMON SHARE - BASIC:
Income from continuing operations, net (in dollars per share)	$0.37	$0.29
Income from discontinued operations, net (in dollars per share)	$0.08	$0.04
Net income per common share (in dollars per share)	$0.45	$0.33
INCOME PER COMMON SHARE - DILUTED:
Income from continuing operations, net (in dollars per share)	$0.37	$0.29
Income from discontinued operations, net (in dollars per share)	$0.08	$0.04
Net income per common share (in dollars per share)	$0.45	$0.33

Income_Per_Share_Parenthetical

Income Per Share (Parentheticals) (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Per Share [Abstract]
Weighted average common share equivalents of excluded dilutive securities due to anti-dilutive effect	11,488	11,326

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Jan. 01, 2016
Loss Contingencies [Line Items]
Guarantees and master leases	$349,000,000
Outstanding letters of credit	39,632,000
Commitment to fund additional capital to partially owned entities	78,000,000
NBCR Losses [Member]
Loss Contingencies [Line Items]
Insurance limit per occurrence	2,000,000,000
Federal government deductible, percentage of balance of a covered loss	85.00%
NBCR Losses [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Federal government deductible, percentage of balance of a covered loss		84.00%
Earthquake California Properties [Member]
Loss Contingencies [Line Items]
Insurance limit per occurrence	180,000,000
Vornado deductible, percentage of property value	5.00%
Vornado deductible, annual aggregate	180,000,000
All Risk And Rental Value [Member]
Loss Contingencies [Line Items]
Insurance limit per occurrence	2,000,000,000
General Liability [Member]
Loss Contingencies [Line Items]
Insurance limit per occurrence	300,000,000
Terrorism Acts [Member]
Loss Contingencies [Line Items]
Insurance limit per occurrence	4,000,000,000
Insurance Coverage End Date	Dec-20
PPIC [Member] | NBCR Losses [Member]
Loss Contingencies [Line Items]
Insurance deductible	$2,480,000
Insurance Deductible Percentage Of Balance Of Covered Loss	15.00%
PPIC [Member] | NBCR Losses [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Insurance Deductible Percentage Of Balance Of Covered Loss		16.00%

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Total Revenues	$606,802	$562,381
Total expenses	439,088	417,140
Operating income (loss)	167,714	145,241
(Loss) income from partially owned entities, including Toys	-2,405	1,979
Income from real estate fund investments	24,089	18,148
Interest and other investment income, net	10,792	11,850
Interest and debt expense	-91,674	-96,312
Net gain on disposition of wholly owned and partially owned assets	1,860	9,635
Income (loss) before income taxes	110,376	90,541
Income tax expense	-971	-851
Income (loss) from continuing operations	109,405	89,690
Income from discontinued operations	15,841	8,466
Net income (loss)	125,246	98,156
Less net income attributable to noncontrolling interests	-21,169	-15,439
Net income attributable to Vornado	104,077	82,717
Interest and debt expense (2)	114,675	170,952
Depreciation and amortization (2)	156,450	196,339
Income tax (benefit) expense (2)	-739	19,831
EBITDA	374,463	469,839
New York Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenues	399,513	361,184
Total expenses	252,760	237,734
Operating income (loss)	146,753	123,450
(Loss) income from partially owned entities, including Toys	-5,663	1,566
Interest and other investment income, net	1,862	1,441
Interest and debt expense	-45,351	-42,839
Income (loss) before income taxes	97,601	83,618
Income tax expense	-943	-969
Income (loss) from continuing operations	96,658	82,649
Income from discontinued operations		5,867
Net income (loss)	96,658	88,516
Less net income attributable to noncontrolling interests	-1,506	-1,405
Net income attributable to Vornado	95,152	87,111
Interest and debt expense (2)	58,667	58,068
Depreciation and amortization (2)	94,124	87,587
Income tax (benefit) expense (2)	1,002	1,032
EBITDA	248,945	233,798
Washington DC Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenues	133,968	135,278
Total expenses	92,997	89,572
Operating income (loss)	40,971	45,706
(Loss) income from partially owned entities, including Toys	131	-1,266
Interest and other investment income, net	13	36
Interest and debt expense	-18,160	-19,347
Income (loss) before income taxes	22,955	25,129
Income tax expense	674	199
Income (loss) from continuing operations	23,629	25,328
Net income (loss)	23,629	25,328
Net income attributable to Vornado	23,629	25,328
Interest and debt expense (2)	21,512	22,798
Depreciation and amortization (2)	40,752	36,150
Income tax (benefit) expense (2)	-2,636	-189
EBITDA	83,257	84,087
Other Segment [Member]
Segment Reporting Information [Line Items]
Total Revenues	73,321	65,919
Total expenses	93,331	89,834
Operating income (loss)	-20,010	-23,915
(Loss) income from partially owned entities, including Toys	3,127	1,679
Income from real estate fund investments	24,089	18,148
Interest and other investment income, net	8,917	10,373
Interest and debt expense	-28,163	-34,126
Net gain on disposition of wholly owned and partially owned assets	1,860	9,635
Income (loss) before income taxes	-10,180	-18,206
Income tax expense	-702	-81
Income (loss) from continuing operations	-10,882	-18,287
Income from discontinued operations	15,841	2,599
Net income (loss)	4,959	-15,688
Less net income attributable to noncontrolling interests	-19,663	-14,034
Net income attributable to Vornado	-14,704	-29,722
Interest and debt expense (2)	34,496	90,086
Depreciation and amortization (2)	21,574	72,602
Income tax (benefit) expense (2)	895	18,988
EBITDA	$42,261	$151,954

Segment_Information_Parentheti

Segment Information (Parentheticals) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Sep. 30, 2014
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	$374,463,000	$469,839,000
Carrying amount of investments in partially owned entitiies	1,408,214,000		1,246,496,000
Impairment losses	256,000	20,842,000
Mark-to-market of investments in our deferred compensation plan	2,859,000	4,400,000
Transaction Costs Spin Off	22,645,000	499,000
Out Performance Plan [Member]
Segment Reporting Information [Line Items]
Additional Expense From Acceleration Of Vesting	8,817,000
Revised Age Limit For Awards Vesting Criteria	65 years
Our share of Toys "R" Us [Member]
Segment Reporting Information [Line Items]
Carrying amount of investments in partially owned entitiies				0
Impairment losses		75,196,000
Corporate General And Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Mark-to-market of investments in our deferred compensation plan	2,859,000	4,400,000
Corporate General And Administrative Expenses For Remainder Of 2015	2,600,000
Corporate General And Administrative Expenses After 2015	6,217,000
Retail Segment Strip Shopping Centers [Member]
Segment Reporting Information [Line Items]
Transaction Costs Spin Off	22,645,000	499,000
New York Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	248,945,000	233,798,000
New York Segment [Member] | Alexanders Inc [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,407,000	10,430,000
New York Segment [Member] | Hotel Pennsylvania [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	-2,126,000	-706,000
New York Segment [Member] | Retail Properties [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	81,305,000	66,195,000
New York Segment [Member] | Office [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	159,359,000	157,879,000
Washington DC Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	83,257,000	84,087,000
Washington DC Segment [Member] | Washington Dc Office Excluding Skyline Properties [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	67,385,000	67,257,000
Washington DC Segment [Member] | Washington DC Skyline Properties [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	6,055,000	6,499,000
Washington DC Segment [Member] | Washington Dc Residential Property [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	9,817,000	10,331,000
Washington DC Segment [Member] | Office [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	73,440,000	73,756,000
Other Segment [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	42,261,000	151,954,000
Other Segment [Member] | Real Estate Fund [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,550,000	7,299,000
Other Segment [Member] | Merchandise Mart Other [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	21,041,000	19,087,000
Other Segment [Member] | Other Properties 555 California Street [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	12,401,000	12,066,000
Other Segment [Member] | India real estate ventures [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	1,841,000	1,824,000
Other Segment [Member] | Our share of Toys "R" Us [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	0	83,550,000
Other Segment [Member] | Other Investments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	9,109,000	9,447,000
Other Segment [Member] | Corporate General And Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	-35,942,000	-25,982,000
Other Segment [Member] | Investment Income and other, net [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	8,762,000	8,073,000
Other Segment [Member] | Urban Edge Properties And Residual Retail Properties Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	19,907,000	32,100,000
Other Segment [Member] | Acquisition and transaction related costs [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	-1,981,000	-1,285,000
Other Segment [Member] | Net Gain On Sale Of Marketable Securities Land Parcels And Residential Condominimums [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	1,860,000	9,635,000
Other Segment [Member] | Net income attributable to noncontrolling interests in the Operating Partnership [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	-5,287,000	-3,860,000
Other Segment [Member] | Other EBITDA attributable to identifiable investments [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	54,942,000	133,273,000
Other Segment [Member] | Income before net realized / unrealized gains (Operations) [Member] | Real Estate Fund [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	1,614,000	1,982,000
Other Segment [Member] | Carried Interest [Member] | Real Estate Fund [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	3,388,000	1,775,000
Other Segment [Member] | Unrealized Gain From Mark To Market [Member] | Real Estate Fund [Member]
Segment Reporting Information [Line Items]
Earnings Before Interest, Taxes, Depreciation, and Amortization	$5,548,000	$3,542,000