Vornado Realty (VNOD) 10-Q 8 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013
Document and Entity Information [Abstract]	'
Entity Registrant Name	'VORNADO REALTY LP
Entity Central Index Key	'0001040765
Document Type	'10-Q
Document Period End Date	30-Sep-13
Document Fiscal Year Focus	'2013
Document Fiscal Period Focus	'Q3
Amendment Flag	'false
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Non-accelerated Filer
Entity Common Stock, Shares Outstanding	0
Entity Well Known Seasoned Issuer	'Yes
Entity Voluntary Filers	'No
Entity Current Reporting Status	'Yes

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Real estate, at cost:	'	'
Land	$4,170,656	$4,791,049
Buildings and improvements	12,387,153	12,445,970
Development costs and construction in progress	1,077,703	920,349
Leasehold improvements and equipment	129,425	130,030
Total	17,764,937	18,287,398
Less accumulated depreciation and amortization	-3,334,920	-3,078,667
Real estate, net	14,430,017	15,208,731
Cash and cash equivalents	872,323	960,319
Restricted cash	320,979	183,256
Marketable securities	210,554	398,188
Tenant and other receivables, net of allowance for doubtful accounts of $22,105 and $37,674	131,479	195,718
Real Estate Fund investments	635,990	600,786
Mortgage and mezzanine loans receivable	176,388	225,359
Receivable arising from the straight-lining of rents, net of allowance of $5,106 and $3,165	804,526	759,742
Deferred leasing and financing costs, net of accumulated amortization of $261,548 and $223,670	400,970	407,126
Identified intangible assets, net of accumulated amortization of $297,391 and $346,613	275,250	406,309
Assets related to discontinued operations	27,413	634,139
Other assets	441,089	381,079
Assets	20,275,321	22,065,049
LIABILITIES, REDEEMABLE PARTNERSHIP UNITS AND EQUITY	'	'
Mortgages payable	8,566,582	8,644,200
Senior unsecured notes	1,350,769	1,358,008
Revolving credit facility debt	83,982	1,170,000
Accounts payable and accrued expenses	442,623	484,746
Deferred revenue	472,805	596,067
Deferred compensation plan	111,752	105,200
Deferred tax liabilities	15,420	15,305
Liabilities related to discontinued operations	0	442,293
Other liabilities	452,456	400,934
Total liabilities	11,496,389	13,216,753
Commitments and contingencies	'	'
Redeemable partnership units:	'	'
Class A units - 11,302,612 and 11,215,682 units outstanding	950,098	898,152
Series D cumulative redeemable preferred units - 1 and 1,800,001 units outstanding	1,000	46,000
Total redeemable partnership units	951,098	944,152
Equity:	'	'
Partners' capital	8,468,555	8,443,156
Earnings less than distributions	-1,527,663	-1,573,275
Accumulated other comprehensive income (loss)	83,327	-18,946
Total Vornado Realty L.P. equity	7,024,219	6,850,935
Noncontrolling interests in consolidated subsidiaries	803,615	1,053,209
Total equity	7,827,834	7,904,144
Total liabilities, redeemable partnership units and equity	20,275,321	22,065,049
Toys R Us [Member]	'	'
Real estate, at cost:	'	'
Investments in partially owned entities	378,615	478,041
All Equity Method Investees Excluding Toys [Member]	'	'
Real estate, at cost:	'	'
Investments in partially owned entities	$1,169,728	$1,226,256

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
ASSETS	'	'
Tenant and other receivables, allowance for doubtful accounts (in US Dollars)	$22,105	$37,674
Receivable arising from the straight-lining of rents, allowance (in US Dollars)	5,106	3,165
Deferred leasing and financing costs, accumulated amortization (in US Dollars)	261,548	223,670
Identified intangible assets, accumulated amortization (in US Dollars)	$297,391	$346,613
Capital Unit, Class A [Member]	'	'
LIABILITIES, REDEEMABLE PARTNERSHIP UNITS AND EQUITY	'	'
Outstanding Partnership Units held by Third Parties (in units)	11,302,612	11,215,682
Cumulative Redeemable Preferred Unit [Member]	'	'
LIABILITIES, REDEEMABLE PARTNERSHIP UNITS AND EQUITY	'	'
Outstanding Partnership Units held by Third Parties (in units)	1	1,800,001

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUES:	'	'	'	'
Property rentals	$532,691	$511,561	$1,609,442	$1,536,216
Tenant expense reimbursements	84,638	79,215	236,580	220,679
Cleveland Medical Mart development project	4,893	72,651	34,026	184,014
Fee and other income	61,158	39,625	206,330	105,889
Total revenues	683,380	703,052	2,086,378	2,046,798
EXPENSES:	'	'	'	'
Operating	264,422	261,512	784,031	749,213
Depreciation and amortization	124,079	122,241	400,952	381,270
General and administrative	48,250	48,456	157,155	150,578
Cleveland Medical Mart development project	3,239	70,431	29,764	177,127
Acquisition related costs	2,818	1,070	6,769	4,314
Total expenses	442,808	503,710	1,378,671	1,462,502
Operating income	240,572	199,342	707,707	584,296
(Loss) Income from partially owned entities	-32,756	12,683	-45,620	142,187
Income from Real Estate Fund	22,913	5,509	73,947	37,572
Interest and other investment (loss) income, net	-10,275	10,523	-32,933	-22,984
Interest and debt expense	-119,870	-119,330	-363,128	-373,257
Net gain (loss) on disposition of wholly owned and partially owned assets	15,138	0	-20,581	4,856
Income before income taxes	115,722	108,727	319,392	372,670
Income tax expense	-2,222	-3,015	-6,172	-17,319
Income from continuing operations	113,500	105,712	313,220	355,351
Income from discontinued operations	18,751	158,444	290,279	247,297
Net income	132,251	264,156	603,499	602,648
Less net income attributable to noncontrolling interests in consolidated subsidiaries	-23,833	-6,610	-50,049	-30,928
Net income attributable to Vornado Realty L.P.	108,418	257,546	553,450	571,720
Preferred unit distributions	-20,381	-22,016	-63,585	-65,337
Preferred unit redemptions	0	11,700	-1,130	11,700
NET INCOME attributable to Class A unitholders	88,037	247,230	488,735	518,083
INCOME PER CLASS A UNIT - BASIC:	'	'	'	'
Income from continuing operations, net (in dollars per unit)	0.36	0.45	1.01	1.36
Income from discontinued operations, net (in dollars per unit)	0.08	0.8	1.45	1.26
Net income per Class A unit (in dollars per unit)	0.44	1.25	2.46	2.62
Weighted average units outstanding (in units)	197,599	197,155	197,510	197,050
INCOME PER CLASS A UNIT - DILUTED:	'	'	'	'
Income from continuing operations, net (in dollars per unit)	0.36	0.44	1	1.35
Income from discontinued operations, net (in dollars per unit)	0.08	0.8	1.45	1.25
Net income per Class A unit (in dollars per unit)	0.44	1.24	2.45	2.6
Weighted average units outstanding (in units)	198,717	198,251	198,607	198,128
DISTRIBUTIONS PER CLASS A UNIT	$0.73	$0.69	$2.19	$2.07
Toys R Us [Member]	'	'	'	'
EXPENSES:	'	'	'	'
(Loss) Income from partially owned entities	-34,209	-8,585	-69,311	88,696
All Equity Method Investees Excluding Toys [Member]	'	'	'	'
EXPENSES:	'	'	'	'
(Loss) Income from partially owned entities	$1,453	$21,268	$23,691	$53,491

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$132,251	$264,156	$603,499	$602,648
Other comprehensive income:	'	'	'	'
Change in unrealized net (loss) gain on available-for-sale securities	-8,252	18,358	160,886	-202,167
Amounts reclassified from accumulated other comprehensive income related to sale of available-for-sale securities	-42,404	0	-42,404	0
Pro rata share of other comprehensive loss of nonconsolidated subsidiaries	-1,669	-12,607	-25,023	-38,861
Change in value of interest rate swap	-295	-2,866	14,265	-8,868
Other	1	-30	531	343
Comprehensive income	79,632	267,011	711,754	353,095
Less comprehensive income attributable to noncontrolling interests in consolidated subsidiaries	-23,833	-6,610	-50,049	-30,928
Comprehensive income attributable to Vornado Realty L.P.	$55,799	$260,401	$661,705	$322,167

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Equity (USD $)	Total	Real Estate Funds [Member]	All Other Except Real Estate Fund [Member]	Preferred Units [Member]	Class A Units Owned By Vornado [Member]	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 Funds [Member]	All Other Except Real Estate Fund [Member]
Beginning balance, Value at Dec. 31, 2011	$7,508,447	'	'	$1,021,660	$7,134,631	($1,401,704)	$73,729	$680,131	'	'
Beginning balance, Units at Dec. 31, 2011	'	'	'	42,187	185,080	'	'	'	'	'
Net income	602,648	'	'	'	'	571,720	'	30,928	'	'
Net income attributable to redeemable partnership units	-40,595	'	'	'	'	-40,595	'	'	'	'
Distributions to Vornado	-384,353	'	'	'	'	-384,353	'	'	'	'
Distributions to preferred unitholders	-56,187	'	'	'	'	-56,187	'	'	'	'
Issuance of preferred units, Units	'	'	'	12,000	'	'	'	'	'	'
Issuance of preferred units, Value	291,144	'	'	291,144	'	'	'	'	'	'
Redemption of preferred units, Units	'	'	'	-3,000	'	'	'	'	'	'
Redemption of preferred units, value	-75,000	'	'	-75,000	'	'	'	'	'	'
Class A units issued to Vornado:	'	'	'	'	'	'	'	'	'	'
Upon redemption of redeemable Class A units, at redemption value, Units	'	'	'	'	624	'	'	'	'	'
Upon redemption of redeemable Class A units, at redemption value, Value	51,216	'	'	'	51,216	'	'	'	'	'
Under Vornado's Omnibus Share plan, Units	'	'	'	'	414	'	'	'	'	'
Under Vornado's Omnibus Share plan, Value	-7,458	'	'	'	8,931	-16,389	'	'	'	'
Under Vornado's dividend reinvestment plan, Units	'	'	'	'	15	'	'	'	'	'
Under Vornado's dividend reinvestment plan, Value	1,270	'	'	'	1,270	'	'	'	'	'
Contributions:	'	'	'	'	'	'	'	'	'	'
Contributions	'	120,606	140	'	'	'	'	'	120,606	140
Distributions:	'	'	'	'	'	'	'	'	'	'
Distributions	'	-44,910	-10	'	'	'	'	'	-44,910	-10
Conversion of Series A preferred units to Class A units, Units	'	'	'	-2	3	'	'	'	'	'
Conversion of Series A preferred units to Class A units, Value	'	'	'	-105	105	'	'	'	'	'
Deferred compensation units and options, Units	'	'	'	'	7	'	'	'	'	'
Deferred compensation units and options, Value	10,670	'	'	'	11,009	-339	'	'	'	'
Change in unrealized net (loss) gain on available-for-sale securities	-202,167	'	'	'	'	'	-202,167	'	'	'
Amounts reclassified related to sale of available-for-sale securities	0	'	'	'	'	'	'	'	'	'
Pro rata share of other comprehensive loss of nonconsolidated subsidiaries	-38,861	'	'	'	'	'	-38,861	'	'	'
Change in value of interest rate swap	-8,868	'	'	'	'	'	-8,868	'	'	'
Adjustment to carry Class A redeemable units at redemption value	-63,657	'	'	'	-63,657	'	'	'	'	'
Redeemable partnership units' share of above adjustments	15,717	'	'	'	'	'	15,717	'	'	'
Preferred unit redemptions	11,700	'	'	'	'	11,700	'	'	'	'
Other	-2,638	'	'	'	'	-2,971	343	-10	'	'
Ending balance, Value at Sep. 30, 2012	7,688,854	'	'	1,237,699	7,143,505	-1,319,118	-160,107	786,875	'	'
Ending balance, Units at Sep. 30, 2012	'	'	'	51,185	186,143	'	'	'	'	'
Beginning balance, Value at Dec. 31, 2012	7,904,144	'	'	1,240,278	7,202,878	-1,573,275	-18,946	1,053,209	'	'
Beginning balance, Units at Dec. 31, 2012	'	'	'	51,185	186,735	'	'	'	'	'
Net income	603,499	'	'	'	'	553,450	'	50,049	'	'
Net income attributable to redeemable partnership units	-28,960	'	'	'	'	-28,960	'	'	'	'
Distributions to Vornado	-409,332	'	'	'	'	-409,332	'	'	'	'
Distributions to preferred unitholders	-62,439	'	'	'	'	-62,439	'	'	'	'
Issuance of preferred units, Units	'	'	'	12,000	'	'	'	'	'	'
Issuance of preferred units, Value	290,536	'	'	290,536	'	'	'	'	'	'
Redemption of preferred units, Units	'	'	'	-10,500	'	'	'	'	'	'
Redemption of preferred units, value	-253,269	'	'	-253,269	'	'	'	'	'	'
Class A units issued to Vornado:	'	'	'	'	'	'	'	'	'	'
Upon redemption of redeemable Class A units, at redemption value, Units	'	'	'	'	234	'	'	'	'	'
Upon redemption of redeemable Class A units, at redemption value, Value	19,627	'	'	'	19,627	'	'	'	'	'
Under Vornado's Omnibus Share plan, Units	'	'	'	'	66	'	'	'	'	'
Under Vornado's Omnibus Share plan, Value	3,681	'	'	'	3,681	'	'	'	'	'
Under Vornado's dividend reinvestment plan, Units	'	'	'	'	16	'	'	'	'	'
Under Vornado's dividend reinvestment plan, Value	1,376	'	'	'	1,376	'	'	'	'	'
Contributions:	'	'	'	'	'	'	'	'	'	'
Contributions	'	24,328	15,687	'	'	'	'	'	24,328	15,687
Distributions:	'	'	'	'	'	'	'	'	'	'
Distributions	'	-47,268	-126,799	'	'	'	'	'	-47,268	-126,799
Conversion of Series A preferred units to Class A units, Units	'	'	'	-2	3	'	'	'	'	'
Conversion of Series A preferred units to Class A units, Value	'	'	'	-90	90	'	'	'	'	'
Deferred compensation units and options, Units	'	'	'	'	-6	'	'	'	'	'
Deferred compensation units and options, Value	6,877	'	'	'	7,182	-305	'	'	'	'
Change in unrealized net (loss) gain on available-for-sale securities	160,886	'	'	'	'	'	160,886	'	'	'
Amounts reclassified related to sale of available-for-sale securities	-42,404	'	'	'	'	'	-42,404	'	'	'
Pro rata share of other comprehensive loss of nonconsolidated subsidiaries	-25,023	'	'	'	'	'	-25,023	'	'	'
Change in value of interest rate swap	14,265	'	'	'	'	'	14,265	'	'	'
Adjustment to carry Class A redeemable units at redemption value	-43,709	'	'	'	-43,709	'	'	'	'	'
Redeemable partnership units' share of above adjustments	-5,982	'	'	'	'	'	-5,982	'	'	'
Preferred unit redemptions	-1,130	'	'	'	'	-1,130	'	'	'	'
Deconsolidation of partially owned entity	-165,427	'	'	'	'	'	'	-165,427	'	'
Other	-5,330	'	'	'	-25	-5,672	531	-164	'	'
Ending balance, Value at Sep. 30, 2013	$7,827,834	'	'	$1,277,455	$7,191,100	($1,527,663)	$83,327	$803,615	'	'
Ending balance, Units at Sep. 30, 2013	'	'	'	52,683	187,048	'	'	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities:	'	'
Net income	$603,499	$602,648
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization (including amortization of deferred financing costs)	419,249	419,007
Net gains on sale of real estate	-286,990	-203,801
Other non-cash adjustments	60,957	39,360
Net unrealized gain on Real Estate Fund investments	-59,476	-33,537
Return of capital from Real Estate Fund investments	56,664	61,052
Straight-lining of rental income	-48,561	-55,553
Equity in net loss (income) of partially owned entities, including Toys "R" Us	45,620	-142,187
Amortization of below-market leases, net	-40,341	-39,693
Non-cash impairment loss on J.C. Penney common shares	39,487	0
Distributions of income from partially owned entities	34,350	59,322
Loss from the mark-to-market of J.C. Penney derivative position	33,487	53,343
Net loss (gain) on disposition of wholly owned and partially owned assets	20,581	-4,856
Impairment losses	4,727	13,511
Gain on sale of Canadian Trade Shows	0	-31,105
Changes in operating assets and liabilities:	'	'
Real Estate Fund investments	-32,392	-163,307
Accounts receivable, net	63,280	-9,444
Prepaid assets	-60,388	-52,895
Other assets	-25,854	-43,103
Accounts payable and accrued expenses	-38,904	34,546
Other liabilities	597	7,338
Net cash provided by operating activities	789,592	510,646
Cash Flows from Investing Activities:	'	'
Proceeds from sales of real estate and related investments	734,427	408,856
Proceeds from sales of marketable securities	378,676	58,460
Distributions of capital from partially owned entities	287,944	26,665
Proceeds from the sale of LNR	240,474	0
Investments in partially owned entities	-212,624	-116,264
Funding of J.C. Penney derivative collateral; and settlement of derivative in 2013	-186,079	-121,117
Additions to real estate	-170,424	-138,060
Development costs and construction in progress	-149,010	-106,502
Return of J.C. Penney derivative collateral	101,150	89,850
Acquisitions of real estate and other	-75,079	-73,069
Proceeds from repayments of mortgage and mezzanine loans receivable and other	49,452	2,379
Restricted cash	21,883	-62,813
Investment in mortgage and mezzanine loans receivable	-390	0
Proceeds from the sale of Canadian Trade Shows	0	52,504
Proceeds from the repayment of loan to officer	0	13,123
Net cash provided by investing activities	1,020,400	34,012
Cash Flows from Financing Activities:	'	'
Repayments of borrowings	-2,851,420	-2,070,295
Proceeds from borrowings	1,600,357	1,773,000
Distributions to Vornado	-409,332	-384,353
Purchases of outstanding preferred units	-299,400	-243,300
Proceeds from the issuance of preferred units	290,536	291,144
Distributions to redeemable security holders and noncontrolling interests	-200,667	-80,994
Distributions to preferred unitholders	-62,820	-54,034
Contributions from noncontrolling interests in consolidated subsidiaries	40,015	120,746
Debt issuance and other costs	-9,982	-17,417
Proceeds received from exercise of Vornado stock options	5,057	10,210
Repurchase of Class A units related to stock compensation agreements and/or related tax withholdings	-332	-30,034
Net cash used in financing activities	-1,897,988	-685,327
Net decrease in cash and cash equivalents	-87,996	-140,669
Cash and cash equivalents at beginning of period	960,319	606,553
Cash and cash equivalents at end of period	872,323	465,884
Supplemental Disclosure of Cash Flow Information:	'	'
Cash payments for interest, excluding capitalized interest of $28,024 and $7,884	350,899	368,018
Cash payments for income taxes	7,529	19,222
Decrease in assets and liabilities resulting from the deconsolidation of Independence Plaza:	'	'
Real Estate, net	-852,166	0
Notes and mortgages payable	-322,903	0
Financing provided to purchaser of L.A. Mart	0	35,000
Marriot Marquis Times Square- retail and signage capital lease:	'	'
Asset (included in development costs and construction in progress)	0	240,000
Liability (included in other liabilities)	0	-240,000
Like-kind exchange of real estate	-155,805	-230,913
Toys R Us [Member]	'	'
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Equity in net loss (income) of partially owned entities, including Toys "R" Us	69,311	-88,696
All Equity Method Investees Excluding Toys [Member]	'	'
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Equity in net loss (income) of partially owned entities, including Toys "R" Us	($23,691)	($53,491)

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parentheticals) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements of Cash Flows Parentheticals [Abstract]	'	'
Cash paid for capitalized interest	$28,024	$7,884

Organization

Organization	9 Months Ended
	Sep. 30, 2013
Organization and Business [Abstract]	'
Organization And Business	'
	1. Organization
	Vornado Realty L.P. (the “Operating Partnership” and/or the “Company”) is a Delaware limited partnership. Vornado Realty Trust (“Vornado”) is the sole general partner of, and owned approximately 94.0% of the common limited partnership interest in the Operating Partnership at September 30, 2013. All references to “we,” “us,” “our,” the “Company” and the “Operating Partnership” refer to Vornado Realty L.P. and its consolidated subsidiaries.

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Basis of Presentation and Significant Accounting Policies [Abstract]	'
Basis Of Presentation And Significant Accounting Policies	'
	2. Basis of Presentation
	The accompanying consolidated financial statements are unaudited and include the accounts of Vornado Realty L.P. and its consolidated subsidiaries. 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 Securities and Exchange Commission (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, for the year ended December 31, 2012, 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 and nine months ended September 30, 2013 are not necessarily indicative of the operating results for the full year. Certain prior year balances have been reclassified in order to conform to current year presentation.

Recently_Issued_Accounting_Lit

Recently Issued Accounting Literature	9 Months Ended
	Sep. 30, 2013
Recently Issued Accounting Literature [Abstract]	'
Recently Issued Accounting Literature	'
	3. Recently Issued Accounting Literature
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued an update (“ASU 2013-02”) to Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income (“Topic 220”). ASU 2013-02 requires additional disclosures regarding significant reclassifications out of each component of accumulated other comprehensive income, including the effect on the respective line items of net income for amounts that are required to be reclassified into net income in their entirety and cross-references to other disclosures providing additional information for amounts that are not required to be reclassified into net income in their entirety. The adoption of this update as of January 1, 2013, did not have a material impact on our consolidated financial statements, but resulted in additional disclosures (see Note 13 - Accumulated Other Comprehensive Income).
	In June 2013, the FASB issued an update (“ASU 2013-08”) to ASC Topic 946, Financial Services - Investment Companies (“Topic 946”). ASU 2013-08 amends the guidance in Topic 946 for determining whether an entity qualifies as an investment company and requires certain additional disclosures. ASU 2013-08 is effective for interim and annual reporting periods in fiscal years that begin after December 15, 2013. We are currently evaluating the impact, if any, of ASU 2013-08 on our real estate fund and our consolidated financial statements.

Vornado_Capital_Partners_Real_

Vornado Capital Partners Real Estate Fund (the "Fund")	9 Months Ended
	Sep. 30, 2013
Real Estate Fund [Abstract]	'
Vornado Capital Partners Real Estate Fund (the "Fund")	'
	4. Vornado Capital Partners Real Estate Fund (the “Fund”)
	We are the general partner and investment manager of our $800,000,000 Fund, to which we committed $200,000,000. The Fund has an eight-year term and a three-year investment period which 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 the AICPA Investment Company Guide 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.
	At September 30, 2013, the Fund had nine investments with an aggregate fair value of $635,990,000, or $127,118,000 in excess of cost, and had remaining unfunded commitments of $239,186,000, of which our share was $59,796,000. Below is a summary of income from the Fund for the three and nine months ended September 30, 2013 and 2012.
			For the Three Months				For the Nine Months
	(Amounts in thousands)		Ended September 30,				Ended September 30,
			2013		2012		2013		2012
	Net investment income (loss)		$	2,362	$	-49	$	6,287	$	4,035
	Net realized gain			8,184		-		8,184		-
	Net unrealized gains			12,367		5,558		59,476		33,537
	Income from Real Estate Fund			22,913		5,509		73,947		37,572
	Less (income) attributable to noncontrolling interests			-15,422		-4,787		-39,321		-25,026
	Income from Real Estate Fund attributable to Vornado (1)		$	7,491	$	722	$	34,626	$	12,546
	___________________________________
	-1	Excludes management, leasing and development fees of $770 and $954 for the three months ended September 30, 2013 and 2012, respectively, and $2,446 and $2,374 for the nine months ended September 30, 2013 and 2012, respectively, which are included as a component of "fee and other income" on our consolidated statements of income.

Mortgage_and_Mezzanine_Loans_R

Mortgage and Mezzanine Loans Receivable	9 Months Ended
	Sep. 30, 2013
Mezzanine Loans Receivable [Abstract]	'
Mortgage and Mezzanine Loans Receivable	'
	5. Mortgage and Mezzanine Loans Receivable
	As of September 30, 2013 and December 31, 2012, the carrying amount of mortgage and mezzanine loans receivable was $176,388,000 and $225,359,000, respectively. These loans have a weighted average interest rate of 10.8% and 10.3% at September 30, 2013 and December 31, 2012, respectively, and have maturities ranging from August 2014 to May 2016.
	On March 27, 2013, we transferred, at par, a 25% participation in a mortgage loan on 701 Seventh Avenue to a third party for $59,375,000 in cash. We acquired this participation in October 2012, together with a 25% interest in a mezzanine loan on the property. The transfer did not qualify for sale accounting given our continuing interest in the mezzanine loan. Accordingly, we continue to include the 25% participation in the mortgage loan in “Mortgage and Mezzanine Loans Receivable” and have recorded a $59,375,000 liability in “Other Liabilities” on our consolidated balance sheet.
	On April 17, 2013, a $50,091,000 mezzanine loan that was scheduled to mature in August 2015, was repaid. In connection therewith, we received net proceeds of $55,358,000, including prepayment penalties, which resulted in income of $5,267,000, included in “interest and other investment (loss) income” on our consolidated statement of income.

Marketable_Securities_and_Deri

Marketable Securities and Derivative Instruments	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Marketable Securities [Abstract]	'
Derivative Instrument and Marketable Securities	'
	6. Marketable Securities and Derivative Instruments
	Investment in Lexington Realty Trust (“Lexington”) (NYSE: LXP)
	From the inception of our investment in Lexington in 2008, until the first quarter of 2013, we accounted for our investment under the equity method because of our ability to exercise significant influence over Lexington's operating and financial policies. As a result of Lexington's common share issuances, our ownership interest has been reduced over time from approximately 17.2% to 8.8% at March 31, 2013. In the first quarter of 2013, we concluded that we no longer have the ability to exercise significant influence over Lexington's operating and financial policies, and began accounting for this investment as a marketable equity security – available for sale, in accordance with ASC Topic 320, Investments – Debt and Equity Securities.
	Investment in J.C. Penney Company, Inc. (“J.C. Penney”) (NYSE: JCP)
	At December 31, 2012, we owned 23,400,000 J.C. Penney common shares comprised of (i) 18,584,010 common shares at a GAAP cost of $19.71 per share, or $366,291,000 in the aggregate, and (ii) 4,815,990 common shares through a forward contract at a weighted average strike price of $29.34 per share, or $141,309,000 in the aggregate.
	On March 4, 2013, we sold 10,000,000 J.C. Penney common shares at a price of $16.03 per share, or $160,300,000 in the aggregate, resulting in a net loss of $36,800,000, which is included in “net gain (loss) on disposition of wholly owned and partially owned assets” on our consolidated statements of income. In addition, in the first quarter of 2013, we wrote down the remaining 8,584,010 J.C. Penney common shares we owned to fair value, based on J.C. Penney's March 31, 2013 closing share price of $15.11 per share, and recorded a $39,487,000 impairment loss, which is included in “interest and other investment (loss) income, net” on our consolidated statements of income.
	On September 19, 2013, we settled the forward contract and received 4,815,990 J.C. Penney common shares. In connection therewith, we recognized a $20,012,000 loss from the mark-to-market of the derivative position through its settlement date, which is included in “interest and other investment (loss) income, net” on our consolidated statements of income.
	On September 19, 2013, we also sold the remaining 13,400,000 J.C. Penney common shares in a block trade at a price of $13.00 per share, or $174,200,000 in the aggregate and recognized an $18,114,000 net loss, which is included in “net gain (loss) on disposition of wholly owned and partially owned assets” on our consolidated statements of income.
	The aggregate economic net loss on our investment in J.C. Penney, from inception through disposition, was $256,156,000.
	Other Investments
	In the third quarter of 2013, we sold a marketable security for $44,176,000, resulting in a net gain of $31,741,000, which is included in “net gain (loss) on disposition of wholly owned and partially owned assets.”
	Below is a summary of our marketable securities portfolio as of September 30, 2013 and December 31, 2012.
	(Amounts in thousands)		As of September 30, 2013						As of December 31, 2012
					GAAP		Unrealized				GAAP		Unrealized
			Fair Value		Cost		Gain		Fair Value		Cost		Gain
	Equity securities:
		Lexington	$	207,407	$	72,549	$	134,858	$	-	$	-	$	-
		J.C. Penney		-		-		-		366,291		366,291		-
		Other		3,147		91		3,056		31,897		12,465		19,432
			$	210,554	$	72,640	$	137,914	$	398,188	$	378,756	$	19,432

Investments_in_Partially_Owned

Investments in Partially Owned Entities	9 Months Ended
	Sep. 30, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Investments in Partially Owned Entities	'
	7. Investments in Partially Owned Entities
	Toys “R” Us (“Toys”)
	As of September 30, 2013, we own 32.6% of Toys. We account for our investment in Toys under the equity method and record our share of Toys' net income or loss on a one-quarter lag basis because Toys' fiscal year ends on the Saturday nearest January 31, and our fiscal year ends on December 31. The business of Toys is highly seasonal. Historically, Toys' fourth quarter net income accounts for more than 80% of its fiscal year net income.
	In the fourth quarter of 2012, we recorded a $40,000,000 non-cash impairment loss on our investment in Toys and disclosed, that if current facts don't change, our share of Toys' undistributed income, which in accordance with the equity method of accounting, would increase the carrying amount of our investment above fair value, would require an offsetting impairment loss.
	In the first quarter of 2013, we recognized our share of Toys' fourth quarter net income of $78,542,000 and a corresponding non-cash impairment loss of the same amount.
	As of September 30, 2013, the carrying amount of our investment in Toys is less than our share of Toys' equity by approximately $145,809,000. This basis difference resulted primarily from the non-cash impairment losses we recognized in 2012 and 2013 aggregating $118,542,000. We have allocated the basis difference to Toys' intangible assets (primarily trade names and trademarks). The basis difference is not being amortized and will be recognized upon disposition of our investment.
	Below is a summary of Toys' latest available financial information on a purchase accounting basis:
		(Amounts in thousands)										Balance as of
		Balance Sheet:										3-Aug-13			27-Oct-12
			Assets									$	11,274,000		$	12,953,000
			Liabilities										9,562,000			11,190,000
			Noncontrolling interests										72,000			44,000
			Toys “R” Us, Inc. equity										1,640,000			1,719,000
					For the Three Months Ended							For the Nine Months Ended
		Income Statement:			3-Aug-13				28-Jul-12			3-Aug-13			28-Jul-12
			Total revenues		$	2,377,000			$	2,552,000		$	10,555,000		$	11,089,000
			Net (loss) income attributable to Toys			-111,000				-34,000			11,000			249,000
	7. Investments in Partially Owned Entities – continued
	Alexander's, Inc. (“Alexander's”) (NYSE: ALX)
	As of September 30, 2013, 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 September 30, 2013, we have a $44,032,000 receivable from Alexander's for fees under these agreements.
	As of September 30, 2013, the market value (“fair value” pursuant to ASC 820) of our investment in Alexander's, based on Alexander's September 30, 2013 closing share price of $286.12, was $473,262,000, or $305,644,000 in excess of the carrying amount on our consolidated balance sheet. As of September 30, 2013, the carrying amount of our investment in Alexander's, excluding amounts owed to us, exceeds our share of the equity in the net assets of Alexander's by approximately $42,224,000. 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.
	Below is a summary of Alexander's latest available financial information:
	(Amounts in thousands)									Balance as of
	Balance Sheet:									30-Sep-13			31-Dec-12
		Assets								$	1,471,000		$	1,482,000
		Liabilities									1,141,000			1,150,000
		Stockholders' equity									330,000			332,000
				For the Three Months Ended						For the Nine Months Ended
	Income Statement:			30-Sep-13			30-Sep-12			30-Sep-13			30-Sep-12
		Total revenues		$	50,000		$	49,000		$	146,000		$	143,000
		Net income attributable to Alexander’s			14,000			19,000			41,000			57,000
	LNR Property LLC (“LNR”)
	In the first quarter of 2013, we recognized our 26.2% share of LNR's fourth quarter net income of $18,731,000, which increased the carrying amount of our investment to approximately $241,000,000. On April 22, 2013, LNR was sold for $1.053 billion, and we received net proceeds of $241,000,000 for our interest. Pursuant to the sale agreement, we ceased receiving income as of January 1, 2013.
	7. Investments in Partially Owned Entities – continued
	Independence Plaza
	On December 21, 2012, we acquired a 58.75% economic interest in Independence Plaza, a three-building 1,328 unit residential complex in the Tribeca submarket of Manhattan (the “Property”). We determined, at that time, that we were the primary beneficiary of the variable interest entity (“VIE”) that owned the Property. Accordingly, we consolidated the operations of the Property from the date of acquisition. Upon consolidation, our preliminary purchase price allocation was primarily to land ($309,848,000) and building ($527,578,000). Based on a third party appraisal and additional information about facts and circumstances that existed at the acquisition date, which was obtained subsequent to the acquisition date, we finalized the purchase price allocation in the first quarter of 2013, and retroactively adjusted our December 31, 2012 consolidated balance sheet as follows:
		(Amounts in thousands)
		Land	$	602,662
		Building and improvements		252,844
		Acquired above-market leases (included in identified intangible assets)		13,115
		Acquired in-place leases (included in identified intangible assets)		67,879
		Other assets		7,374
		Acquired below-market leases (included in deferred revenue)		-99,074
		Purchase price	$	844,800
	On June 7, 2013, the existing $323,000,000 mortgage loan was refinanced with a $550,000,000 five-year, fixed-rate interest only mortgage loan bearing interest at 3.48%. The net proceeds of $219,000,000, after repaying the existing loan and closing costs, were distributed to the partners, of which our share was $137,000,000. Simultaneously with the refinancing, we sold an 8.65% economic interest in the Property to our partner for $41,000,000 in cash, which reduced our economic interest to 50.1%. As a result of this transaction, we determined that we were no longer the primary beneficiary of the VIE. Accordingly, we deconsolidated the operations of the Property on June 7, 2013 and began accounting for our investment under the equity method.
	650 Madison Avenue
	On September 30, 2013, a joint venture, in which we have a 20.1% interest, acquired 650 Madison Avenue, a 27-story, 594,000 square foot Class A office and retail tower located on the full western blockfront of Madison Avenue between 59th and 60th Street, for $1.295 billion. The property contains 523,000 square feet of office space and 71,000 square feet of retail space. The purchase price was funded with cash and a new $800,000,000 seven-year 4.39% interest-only loan. We account for our investment in the joint venture under the equity method.
	7. Investments in Partially Owned Entities – continued
	Below is a schedule of our investments in partially owned entities as of September 30, 2013 and December 31, 2012.
						Percentage
	(Amounts in thousands)					Ownership at				Balance as of
	Investments:					30-Sep-13				30-Sep-13			31-Dec-12
	Toys							32.60%		$	378,615		$	478,041
	Alexander’s							32.40%		$	167,618		$	171,013
	Lexington(1)							n/a			-			75,542
	LNR(2)							n/a			-			224,724
	India real estate ventures							4.0%-36.5%			90,200			95,516
	Partially owned office buildings:
		280 Park Avenue						49.50%			229,152			197,516
		650 Madison Avenue (see page 15 for details)						20.10%			121,775			-
		Rosslyn Plaza						43.7%-50.4%			59,416			62,627
		West 57th Street properties						50.00%			56,743			57,033
		One Park Avenue						30.30%			56,064			50,509
	666 Fifth Avenue Office Condominium						49.50%			40,047			35,527
	330 Madison Avenue						25.00%			33,991			30,277
	Warner Building						55.00%			13,387			8,775
	Fairfax Square						20.00%			5,191			5,368
	Other partially owned office buildings						Various			9,338			9,315
Other investments:
	Independence Plaza (includes $26,266 attributable
		to non-controlling interests)(3)					50.10%			164,488			-
	Monmouth Mall						50.00%			6,876			7,205
	Downtown Crossing, Boston(4)						n/a			-			48,122
	Other investments(5)						Various			115,442			147,187
									$	1,169,728		$	1,226,256
-1		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
-2		On April 22, 2013, LNR was sold (see page 14 for details).
-3		On June 7, 2013, we sold an 8.65% economic interest in the property (see page 15 for details).
-4		On April 24, 2013, the joint venture sold the site in Downtown Crossing, Boston (see note 3 on page 17 for details).
-5		Includes interests in 85 10th Avenue, Fashion Centre Mall, 50-70 West 93rd Street and others.
7. Investments in Partially Owned Entities - continued
Below is a schedule of income recognized from investments in partially owned entities for the three and nine months ended September 30, 2013 and 2012.
					Percentage		For the Three Months						For the Nine Months
(Amounts in thousands)					Ownership		Ended September 30,						Ended September 30,
Our Share of Net Income (Loss):					30-Sep-13		2013			2012			2013			2012
Toys:
	Equity in net (loss) income before income taxes				32.60%		$	-58,746		$	-22,074		$	14,737		$	99,649
	Income tax benefit (expense)							22,690			11,118			-10,959			-17,982
	Equity in net (loss) income							-36,056			-10,956			3,778			81,667
	Non-cash impairment loss (see page 13 for details)							-			-			-78,542			-
	Management fees							1,847			2,371			5,453			7,029
							$	-34,209		$	-8,585		$	-69,311		$	88,696
Alexander’s:
	Equity in net income				32.40%		$	4,299		$	7,137		$	12,785		$	19,210
	Management, leasing and development fees							1,676			1,821			5,017			5,617
								5,975			8,958			17,802			24,827
Lexington(1)					n/a			-			-323			-979			371
LNR(2)					n/a			-			16,600			18,731			39,319
India real estate ventures					4.0%-36.5%			-1,449			82			-2,630			-4,526
Partially owned office buildings:
	Warner Building				55.00%			-2,004			-2,839			-6,346			-7,438
	280 Park Avenue				49.50%			-1,890			-1,717			-6,480			-9,267
	666 Fifth Avenue Office Condominium				49.50%			1,858			1,744			5,776			5,244
	330 Madison Avenue				25.00%			1,225			1,224			3,714			2,036
	Rosslyn Plaza				43.7%-50.4%			-707			-204			-2,158			99
	One Park Avenue				30.30%			680			256			1,054			890
	1101 17th Street				55.00%			376			591			996			1,920
	West 57th Street properties				50.00%			47			167			415			732
	Fairfax Square				20.00%			-24			-33			-87			-85
	Other partially owned office buildings				Various			477			505			1,530			1,587
								38			-306			-1,586			-4,282
Other investments:
	Independence Plaza (see page 15 for details)				50.10%			-2,081			1,828			-3,199			5,243
	Monmouth Mall				50.00%			165			347			1,450			1,007
	Downtown Crossing, Boston(3)				n/a			-			-38			-2,358			-872
	Other investments(4)				Various			-1,195			-5,880			-3,540			-7,596
								-3,111			-3,743			-7,647			-2,218
							$	1,453		$	21,268		$	23,691		$	53,491
-1		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
-2		On April 22, 2013, LNR was sold (see page 14 for details).
-3		On April 24, 2013, the joint venture sold the site in Downtown Crossing, Boston, and we received approximately $45,000 for our 50% interest. In connection therewith, we recognized a $2,335 impairment loss in the first quarter.
-4		Includes interests in 85 10th Avenue, Fashion Centre Mall, 50-70 West 93rd Street and others.
7. Investments in Partially Owned Entities – continued
Below is a summary of the debt of our partially owned entities as of September 30, 2013 and December 31, 2012, none of which is recourse to us.
			Percentage				Interest		100% of
			Ownership at				Rate at		Partially Owned Entities’ Debt at
(Amounts in thousands)			September 30,				September 30,		September 30,			December 31,
			2013		Maturity		2013		2013			2012
Toys:
	Notes, loans and mortgages payable		32.60%		2014-2021		7.69%		$	5,253,323		$	5,683,733
Alexander's:
	Mortgages payable		32.40%		2014-2018		3.84%		$	1,054,046		$	1,065,916
Lexington(1):
	Mortgages payable		n/a		n/a		n/a		$	-		$	1,994,179
LNR(2):
	Mortgages payable		n/a		n/a		n/a		$	-		$	309,787
	Liabilities of consolidated CMBS and CDO trusts				n/a		n/a			-			97,211,734
									$	-		$	97,521,521
Partially owned office buildings:
	666 Fifth Avenue Office Condominium mortgage
		payable	49.50%		19-Feb		6.76%		$	1,155,038		$	1,109,700
	650 Madison Avenue mortgage payable		20.10%		20-Oct		4.39%			800,000			-
	280 Park Avenue mortgage payable		49.50%		16-Jun		6.64%			738,582			738,228
	Warner Building mortgage payable		55.00%		16-May		6.26%			292,700			292,700
	One Park Avenue mortgage payable		30.30%		16-Mar		5.00%			250,000			250,000
	330 Madison Avenue mortgage payable		25.00%		15-Jun		1.68%			150,000			150,000
	Fairfax Square mortgage payable		20.00%		14-Dec		7.00%			69,452			70,127
	1101 17th Street mortgage payable		55.00%		15-Jan		1.43%			31,000			31,000
	Rosslyn Plaza mortgage payable		43.7%-50.4%		16-Mar		2.68%			23,785			-
	West 57th Street properties mortgages payable		50.00%		23-Jul		3.50%			20,000			20,434
	Other		Various		Various		6.36%			69,280			69,704
									$	3,599,837		$	2,731,893
India Real Estate Ventures:
	TCG Urban Infrastructure Holdings mortgages
		payable	25.00%		2013-2022		13.63%		$	213,963		$	236,579
Other:
	Independence Plaza (see page 15 for details)		50.10%		18-Jun		3.48%			550,000			-
	Monmouth Mall mortgage payable		50.00%		15-Sep		5.44%			158,296			159,896
	Other(3)		Various		Various		5.01%			972,135			990,647
									$	1,680,431		$	1,150,543
-1		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
-2		On April 22, 2013, LNR was sold (see page 14 for details).
-3		Includes interests in Fashion Centre Mall, 50-70 West 93rd Street and others.
Based on our ownership interest in the partially owned entities above, our pro rata share of the debt of these partially owned entities was $4,032,534,000 and $29,443,128,000 at September 30, 2013 and December 31, 2012, respectively. Excluding our pro rata share of LNR's liabilities related to consolidated CMBS and CDO trusts, which were non-recourse to LNR and its equity holders, including us, our pro rata share of partially owned entities debt was $3,998,929,000 at December 31, 2012.

Discontinued_Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	8. Discontinued Operations
	On January 24, 2013, we sold the Green Acres Mall located in Valley Stream, New York, for $500,000,000. The sale resulted in net proceeds of $185,000,000, after repaying the existing loan and closing costs, and a net gain of $202,275,000.
	On April 15, 2013, we sold The Plant, a power strip shopping center in San Jose, California, for $203,000,000. The sale resulted in net proceeds of $98,000,000, after repaying the existing loan and closing costs, and a net gain of $32,169,000.
	On April 15, 2013, we sold a retail property in Philadelphia, which is a part of the Gallery at Market Street, for $60,000,000. The sale resulted in net proceeds of $58,000,000, and a net gain of $33,058,000.
	On September 23, 2013, we sold a retail property in Tampa, Florida for $45,000,000, of which our 75% share was $33,750,000. Our share of the net proceeds after repaying the existing loan and closing costs were $20,810,000, and our share of the net gain was $8,728,000.
	In addition to the above, during 2013, we sold 12 other non-core properties, in separate transactions, for an aggregate of $82,300,000, in cash, which resulted in a net gain aggregating $7,851,000.
	We have reclassified the revenues and expenses of all of the properties discussed above, as well as certain other retail properties that are currently held for sale 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 financial statements. The tables below set forth the assets and liabilities related to discontinued operations at September 30, 2013 and December 31, 2012 and their combined results of operations for the three and nine months ended September 30, 2013 and 2012.
			Assets Related to				Liabilities Related to
	(Amounts in thousands)		Discontinued Operations as of				Discontinued Operations as of
			September 30,		December 31,		September 30,		December 31,
			2013		2012		2013		2012
	Retail properties		$	20,428	$	600,640	$	-	$	442,293
	Other properties			6,985		33,499		-		-
	Total		$	27,413	$	634,139	$	-	$	442,293
			For the Three Months				For the Nine Months
	(Amounts in thousands)		Ended September 30,				Ended September 30,
			2013		2012		2013		2012
	Total revenues		$	2,963	$	35,576	$	35,193	$	144,274
	Total expenses			2,488		27,877		27,177		106,924
				475		7,699		8,016		37,350
	Net gains on sale of real estate (2013 includes $2,909
		attributable to noncontrolling interests)		18,996		131,088		286,990		203,801
	Gain on sale of Canadian Trade Shows, net of $11,448 of
		income taxes		-		19,657		-		19,657
	Impairment losses			-720		-		-4,727		-13,511
	Income from discontinued operations		$	18,751	$	158,444	$	290,279	$	247,297

Identified_Intangible_Assets_a

Identified Intangible Assets and Liabilities	9 Months Ended
	Sep. 30, 2013
Identified Intangible Assets and Liabilities [Abstract]	'
Identified Intangible Assets and 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 September 30, 2013 and December 31, 2012.
			Balance as of
			September 30,		December 31,
		(Amounts in thousands)	2013		2012
		Identified intangible assets:
		Gross amount	$	572,641	$	752,922
		Accumulated amortization		-297,391		-346,613
		Net	$	275,250	$	406,309
		Identified intangible liabilities (included in deferred revenue):
		Gross amount	$	811,917	$	902,525
		Accumulated amortization		-372,329		-341,536
		Net	$	439,588	$	560,989
	Amortization of acquired below-market leases, net of acquired above-market leases, resulted in an increase to rental income of $11,820,000 and $13,256,000 for the three months ended September 30, 2013 and 2012, respectively, and $40,326,000 and $39,569,000 for the nine months ended September 30, 2013 and 2012, 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, 2014 is as follows:
		(Amounts in thousands)
		2014	$	41,069
		2015		38,263
		2016		36,321
		2017		30,936
		2018		29,171
	Amortization of all other identified intangible assets (a component of depreciation and amortization expense) was $11,257,000 and $11,415,000 for the three months ended September 30, 2013 and 2012, respectively, and $53,339,000 and $35,519,000 for the nine months ended September 30, 2013 and 2012, 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, 2014 is as follows:
		(Amounts in thousands)
		2014	$	26,708
		2015		21,543
		2016		18,363
		2017		15,203
		2018		11,005
	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 $981,000 and $312,000 for the three months ended September 30, 2013 and 2012, respectively, and $3,704,000 and $894,000 for the nine months ended September 30, 2013 and 2012, respectively. Estimated annual amortization of these below-market leases, net of above-market leases for each of the five succeeding years commencing January 1, 2014 is as follows:
		(Amounts in thousands)
		2014	$	3,921
		2015		3,921
		2016		3,921
		2017		3,921
		2018		3,921

Debt

Debt	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Debt	'
	10. Debt
	The following is a summary of our debt:
						Interest
		(Amounts in thousands)				Rate at	Balance at
						September 30,	September 30,		December 31,
		Mortgages payable:			Maturity (1)	2013	2013		2012
		Fixed rate:
			New York:
				1290 Avenue of the Americas (70% owned)	22-Nov	3.34%	$	950,000	$	950,000
				Two Penn Plaza	18-Mar	5.13%		425,000		425,000
				666 Fifth Avenue Retail Condominium(2)	23-Mar	3.61%		390,000		-
				770 Broadway	16-Mar	5.65%		353,000		353,000
				888 Seventh Avenue	16-Jan	5.71%		318,554		318,554
				350 Park Avenue	17-Jan	3.75%		300,000		300,000
				909 Third Avenue	15-Apr	5.64%		196,013		199,198
				828-850 Madison Avenue Retail Condominium	18-Jun	5.29%		80,000		80,000
				510 Fifth Avenue	16-Jan	5.60%		30,872		31,253
			Washington, DC:
				Skyline Properties(3)	17-Feb	5.74%		736,259		704,957
				River House Apartments	15-Apr	5.43%		195,546		195,546
				2101 L Street	24-Aug	3.97%		150,000		150,000
				2121 Crystal Drive	23-Mar	5.51%		149,005		150,000
				Bowen Building	16-Jun	6.14%		115,022		115,022
				1215 Clark Street, 200 12th Street and 251 18th Street	25-Jan	7.09%		103,794		105,724
				West End 25	21-Jun	4.88%		101,671		101,671
				Universal Buildings	14-Apr	6.56%		89,321		93,226
				2011 Crystal Drive	17-Aug	7.30%		78,875		79,624
				220 20th Street	18-Feb	4.61%		73,003		73,939
				1550 and 1750 Crystal Drive	14-Nov	7.08%		71,841		74,053
				2231 Crystal Drive	n/a	n/a		-		41,298
				1225 Clark Street	n/a	n/a		-		24,834
			Retail Properties:
				Cross-collateralized mortgages on 40 strip shopping centers	20-Sep	4.25%		563,692		573,180
				Bergen Town Center(4)	23-Apr	3.56%		300,000		-
				Montehiedra Town Center(5)	16-Jul	6.04%		120,000		120,000
				North Bergen (Tonnelle Avenue)	18-Jan	4.59%		75,000		75,000
				Las Catalinas Mall	13-Nov	6.97%		52,822		54,101
				Broadway Mall	n/a	n/a		-		85,180
				Other	06/14-11/34	5.12%-7.30%		68,659		86,641
			Other:
				555 California Street (70% owned)	21-Sep	5.10%		600,000		600,000
				Merchandise Mart	16-Dec	5.57%		550,000		550,000
				Borgata Land	21-Feb	5.14%		59,518		60,000
		Total fixed rate mortgages payable				4.91%	$	7,297,467	$	6,771,001
		___________________
			See notes on page 23.
	10. Debt - continued
								Interest
		(Amounts in thousands)						Rate at	Balance at
						Spread over		September 30,	September 30,		December 31,
		Mortgages payable:			Maturity (1)	LIBOR		2013	2013		2012
		Variable rate:
			New York:
				Eleven Penn Plaza	19-Jan	L+235		2.53%	$	330,000	$	330,000
				100 West 33rd Street - office and retail	17-Mar	L+250		2.68%		325,000		325,000
				4 Union Square South - retail	19-Nov	L+215		2.33%		120,000		120,000
				435 Seventh Avenue - retail	19-Aug	L+225		2.43%		98,000		98,000
				866 UN Plaza	16-May	L+125		1.43%		44,978		44,978
				Independence Plaza (see page 15 for details)	n/a	n/a		n/a		-		334,225
			Washington, DC:
				River House Apartments	18-Apr	n/a(6)		1.58%		64,000		64,000
				2200 / 2300 Clarendon Boulevard	15-Jan	L+75		0.93%		42,806		47,353
				1730 M and 1150 17th Street	14-Jun	L+140		1.58%		43,581		43,581
		Retail:
			Cross-collateralized mortgages on 40 strip
			shopping centers (7)	20-Sep	L+136(7)		2.36%		60,000		60,000
			Bergen Town Center(4)	n/a	n/a		n/a		-		282,312
			Other	18-Jul	L+130		1.48%		17,000		-
		Other:
			220 Central Park South	13-Oct	L+275		2.93%		123,750		123,750
		Total variable rate mortgages payable					2.39%		1,269,115		1,873,199
		Total mortgages payable					4.54%	$	8,566,582	$	8,644,200
	Senior unsecured notes:
		Senior unsecured notes due 2015		15-Apr			4.25%	$	499,752	$	499,627
		Senior unsecured notes due 2039 (8)		Oct-39			7.88%		452,500		460,000
		Senior unsecured notes due 2022		22-Jan			5.00%		398,517		398,381
		Total senior unsecured notes					5.69%	$	1,350,769	$	1,358,008
	Unsecured revolving credit facilities:
		$1.25 billion unsecured revolving credit facility		16-Nov	L+125		-	$	-	$	1,150,000
		$1.25 billion unsecured revolving credit facility
			($33,068 and $22,807 reserved for outstanding
			letters of credit) (9)	18-Jun	L+115		1.33%		83,982		20,000
		Total unsecured revolving credit facilities					1.33%	$	83,982	$	1,170,000
	___________________________
		See notes on the following page.
10. Debt - continued
	Notes to preceding tabular information (amounts in thousands):
	-1	Represents the extended maturity for certain loans in which we have the unilateral right, ability and intent to extend.
	-2	On February 20, 2013, we completed a $390,000 financing of this property. The 10-year fixed-rate interest only loan bears interest at 3.61%. This property was previously unencumbered.
	-3	On October 31, 2013, we completed the restructuring of the $678,000 (face amount) 5.74% Skyline properties mortgage loan. The loan has been separated into two tranches; a senior $350,000 position and a junior $328,000 position. The maturity date has been extended from February 2017 to February 2022, with a one-year extension option. The effective interest rate is 2.965%. Capital we invest to re-lease the property will be senior to the $328,000 junior position.
	-4	On March 25, 2013, we completed a $300,000 financing of this property. The 10-year fixed-rate interest only loan bears interest at 3.56%. The property was previously encumbered by a $282,312 floating-rate loan.
	-5	On May 13, 2013, we notified the lender that due to tenants vacating, the property's operating cash flow will be insufficient to pay the debt service; accordingly, at our request, the mortgage loan was transferred to the special servicer. We are in discussions with the special servicer to restructure the terms of the loan; there can be no assurance as to the timing and ultimate resolution of these discussions.
	-6	Interest at the Freddie Mac Reference Note Rate plus 1.53%.
	-7	LIBOR floor of 1.00%.
	-8	May be redeemed at our option in whole or in part beginning on October 1, 2014, at a price equal to the principal amount plus accrued interest.
	-9	On March 28, 2013, we extended this revolving credit facility from June 2015 to June 2017, with two six-month extension options. The interest on the extended facility was reduced from LIBOR plus 135 basis points to LIBOR plus 115 basis points. In addition, the facility fee was reduced from 30 basis points to 20 basis points.

Redeemable_Partnership_Units

Redeemable Partnership Units	9 Months Ended
	Sep. 30, 2013
Redeemable Partnership Units Disclosure [Abstract]	'
Redeemable Noncontrolling Interests	'
	11. Redeemable Partnership Units
	Redeemable partnership units on our consolidated balance sheets are primarily comprised of Class A units held by third parties. Redeemable partnership units on our consolidated balance sheets 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 “partners' capital” on our consolidated balance sheets. Below is a table summarizing the activity of redeemable partnership units.
		(Amounts in thousands)
		Balance at December 31, 2011	$	1,160,677
		Net income		40,595
		Other comprehensive loss		-15,717
		Distributions		-34,138
		Redemption of Class A units, at redemption value		-51,216
		Adjustments to carry redeemable Class A units at redemption value		63,657
		Redemption of Series D-10 and D-14 redeemable units		-168,300
		Other, net		-59
		Balance at September 30, 2012	$	995,499
		Balance at December 31, 2012	$	944,152
		Net income		28,960
		Other comprehensive income		5,982
		Distributions		-25,827
		Redemption of Class A units, at redemption value		-19,627
		Adjustments to carry redeemable Class A units at redemption value		43,709
		Redemption of Series D-15 redeemable units		-36,900
		Other, net		10,649
		Balance at September 30, 2013	$	951,098
	As of September 30, 2013 and December 31, 2012, the aggregate redemption value of redeemable Class A units, which are those units held by third parties, was $950,098,000 and $898,152,000, respectively.
	Redeemable partnership units 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 and $55,011,000 as of September 30, 2013 and December 31, 2012, respectively.
	On May 9, 2013, we redeemed all of the outstanding 6.875% Series D-15 Cumulative Redeemable Preferred Units with an aggregate face amount of $45,000,000 for $36,900,000 in cash, plus accrued and unpaid distributions through the date of redemption.

Partners_Capital

Partners' Capital	9 Months Ended
	Sep. 30, 2013
Partners Capital Disclosure [Abstract]	'
Partners' Capital	'
	12. Partners' Capital
	On January 25, 2013, Vornado sold 12,000,000 5.40% Series L Cumulative Redeemable Preferred Shares at a price of $25.00 per share in an underwritten public offering pursuant to an effective registration statement. Vornado retained aggregate net proceeds of $290,536,000, after underwriters' discounts and issuance costs, and contributed the net proceeds to us in exchange for 12,000,000 Series L Preferred Units (with economic terms that mirror those of the Series L Preferred Shares). Distributions on the Series L Preferred Units are cumulative and payable quarterly in arrears. The Series L Preferred Units are not convertible into, or exchangeable for, any of our properties or securities. On or after five years from the date of issuance (or sooner under limited circumstances), Vornado may require us to redeem the Series L Preferred Units at a redemption price of $25.00 per unit, plus accrued and unpaid distributions through the date of redemption. The Series L Preferred Units have no maturity date and will remain outstanding indefinitely unless redeemed.
	On February 19, 2013, we redeemed all of the outstanding 6.75% Series F Cumulative Redeemable Preferred Units and 6.75% Series H Cumulative Redeemable Preferred Units at par, for an aggregate of $262,500,000 in cash, plus accrued and unpaid distributions through the date of redemption.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2013
Accumulated Other Comprehensive Income [Abstract]	'
Accumulated Other Comprehensive Income	'
	13. Accumulated Other Comprehensive Income
	The following tables set forth the changes in accumulated other comprehensive income (loss) by component.
				For the Three Months Ended September 30, 2013
						Securities			Pro rata share of		Interest
						available-			nonconsolidated		rate
	(Amounts in thousands)			Total		for-sale			subsidiaries' OCI		swap		Other
	Balance as of June 30, 2013			$	132,894	$	188,570		$	-12,041	$	-35,505	$	-8,130
		OCI before reclassifications			-7,163		-8,252			-1,669		-295		3,053
		Amounts reclassified from AOCI			-42,404		-42,404	(1)		-		-		-
	Net current period OCI				-49,567		-50,656			-1,669		-295		3,053
	Balance as of September 30, 2013			$	83,327	$	137,914		$	-13,710	$	-35,800	$	-5,077
	-1		Reclassified to "net gain (loss) on disposition of wholly owned and partially owned assets" on our consolidated statements of income.
				For the Nine Months Ended September 30, 2013
						Securities			Pro rata share of		Interest
						available-			nonconsolidated		rate
	(Amounts in thousands)			Total		for-sale			subsidiaries' OCI		swap		Other
	Balance as of December 31, 2012			$	-18,946	$	19,432		$	11,313	$	-50,065	$	374
		OCI before reclassifications			144,677		160,886			-25,023		14,265		-5,451
		Amounts reclassified from AOCI			-42,404		-42,404	(1)		-		-		-
	Net current period OCI				102,273		118,482			-25,023		14,265		-5,451
	Balance as of September 30, 2013			$	83,327	$	137,914		$	-13,710	$	-35,800	$	-5,077
	-1		Reclassified to "net gain (loss) on disposition of wholly owned and partially owned assets" on our consolidated statements of income.

Variable_Interest_Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2013
Variable Interest Entities [Abstract]	'
Variable Interest Entities (VIEs)	'
	14. Variable Interest Entities (“VIEs”)
	Consolidated VIEs
	The entity that owns Independence Plaza was a consolidated VIE at December 31, 2012. On June 7, 2013, we sold a portion of our economic interest in this entity and determined that we are no longer its primary beneficiary. Accordingly, we deconsolidated this VIE (see Note 7 – Investments in Partially Owned Entities). The table below summarizes the assets and liabilities of the VIE at December 31, 2012. The liabilities were secured only by the assets of the VIE, and were non-recourse to us.
			As of September 30,		As of December 31,
		(Amounts in thousands)	2013		2012
		Total assets	$	-	$	957,730
		Total liabilities	$	-	$	443,894
		Noncontrolling interest	$	-	$	193,933
	Unconsolidated VIEs
	At September 30, 2013, we have unconsolidated VIEs comprised of our investments in the entities that own the Warner Building and Independence Plaza. 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 (see Note 7 – Investments in Partially Owned Entities). As of September 30, 2013, the net carrying amount of our investment in these entities was $151,609,000, and at December 31, 2012, the carrying amount of our investment in the Warner Building was $8,775,000. Our maximum exposure to loss in these entities, is limited to our investment.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	15. 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 in our consolidated financial statements 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) interest rate swaps and (v) mandatorily redeemable instruments (Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units). The tables below aggregate the fair values of these financial assets and liabilities by their levels in the fair value hierarchy at September 30, 2013 and December 31, 2012, respectively.
					As of September 30, 2013
		(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Marketable securities			$	210,554	$	210,554	$	-	$	-
		Real Estate Fund investments (75% of which is attributable to
			noncontrolling interests)			635,990		-		-		635,990
		Deferred compensation plan assets (included in other assets)				111,752		45,227		-		66,525
			Total assets		$	958,296	$	255,781	$	-	$	702,515
		Mandatorily redeemable instruments (included in other liabilities)			$	55,097	$	55,097	$	-	$	-
		Interest rate swap (included in other liabilities)				35,800		-		35,800		-
			Total liabilities		$	90,897	$	55,097	$	35,800	$	-
					As of December 31, 2012
		(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Marketable securities			$	398,188	$	398,188	$	-	$	-
		Real Estate Fund investments (75% of which is attributable to
			noncontrolling interests)			600,786		-		-		600,786
		Deferred compensation plan assets (included in other assets)				105,200		42,569		-		62,631
		J.C. Penney derivative position (included in other assets)(1)				11,165		-		11,165		-
			Total assets		$	1,115,339	$	440,757	$	11,165	$	663,417
		Mandatorily redeemable instruments (included in other liabilities)			$	55,011	$	55,011	$	-	$	-
		Interest rate swap (included in other liabilities)				50,065		-		50,065		-
			Total liabilities		$	105,076	$	55,011	$	50,065	$	-
		(1) Represents the cash deposited with the counterparty in excess of the mark-to-market loss on the derivative position.
	15. Fair Value Measurements – continued
	Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis - continued
	Real Estate Fund Investments
	At September 30, 2013, our Real Estate Fund had nine investments with an aggregate fair value of $635,990,000, or $127,118,000 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 6.7 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 Fund investments at September 30, 2013.
								Weighted Average
								(based on fair
		Unobservable Quantitative Input				Range		value of investments)
			Discount rates			12.0% to 17.5%		13.90%
			Terminal capitalization rates			5.3% to 6.0%		5.70%
	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 Fund investments that are classified as Level 3, for the three and nine months ended September 30, 2013 and 2012.
					Real Estate Fund Investments				Real Estate Fund Investments
					For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		(Amounts in thousands)				2013		2012	2013		2012
		Beginning balance			$	622,124	$	388,455	$	600,786	$	346,650
		Purchases				7,406		88,429		38,299		163,021
		Sales/Returns				-14,184		-		-70,848		-61,052
		Net realized gain				8,184		-		8,184		-
		Net unrealized gains				12,367		5,558		59,476		33,537
		Other, net				93		-		93		286
		Ending balance			$	635,990	$	482,442	$	635,990	$	482,442
	15. 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 and nine months ended September 30, 2013 and 2012.
					Deferred Compensation Plan Assets				Deferred Compensation Plan Assets
					For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		(Amounts in thousands)				2013		2012	2013		2012
		Beginning balance			$	66,502	$	58,313	$	62,631	$	56,221
		Purchases				880		1,650		4,027		5,416
		Sales				-873		-276		-5,318		-4,287
		Realized and unrealized (loss) gain				-42		1,080		4,094		3,349
		Other, net				58		-		1,091		68
		Ending balance			$	66,525	$	60,767	$	66,525	$	60,767
	Fair Value Measurements on a Nonrecurring Basis
Assets measured at fair value on a nonrecurring basis on our consolidated balance sheets consist primarily of our investment in Toys “R” Us and real estate assets that were written-down to estimated fair value at December 31, 2012. The fair values of these assets were 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. Generally, we consider multiple valuation techniques when measuring fair values but in certain circumstances, a single valuation technique may be appropriate. The tables below aggregate the fair values of these assets by their levels in the fair value hierarchy.
				As of December 31, 2012
	(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Investment in Toys "R" Us		$	478,041	$	-	$	-	$	478,041
		Real estate assets			189,529		-		-		189,529
		Condominium units (included in other assets)			52,142		-		-		52,142
			Total assets	$	719,712	$	-	$	-	$	719,712
15. 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 September 30, 2013 and December 31, 2012.
				As of September 30, 2013				As of December 31, 2012
				Carrying		Fair		Carrying		Fair
	(Amounts in thousands)			Amount		Value		Amount		Value
		Cash equivalents		$	380,248	$	380,248	$	543,000	$	543,000
		Mortgage and mezzanine loans receivable			176,388		176,098		225,359		221,446
				$	556,636	$	556,346	$	768,359	$	764,446
		Debt:
			Mortgages payable	$	8,566,582	$	8,638,000	$	8,644,200	$	8,672,000
			Senior unsecured notes		1,350,769		1,413,000		1,358,008		1,468,000
			Revolving credit facility debt		83,982		83,982		1,170,000		1,170,000
				$	10,001,333	$	10,134,982	$	11,172,208	$	11,310,000

Incentive_Compensation

Incentive Compensation	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Incentive Compensation	'
	16. Incentive Compensation
	Vornado's 2010 Omnibus Share Plan (the “Plan”) provides for grants of incentive and non-qualified Vornado stock options, Vornado restricted stock, restricted units and out-performance plan awards to certain of Vornado's employees and officers. We account for all stock-based compensation in accordance ASC 718, Compensation – Stock Compensation. Stock-based compensation expense was $9,201,000 and $7,774,000 in the three months ended September 30, 2013 and 2012, respectively and $25,796,000 and $22,821,000 in the nine months ended September 30, 2013 and 2012, respectively.
	On March 15, 2013, the Compensation Committee of Vornado's Board of Trustees (the “Committee”) approved the 2013 Outperformance Plan, a performance-based equity compensation plan and related form of award agreement (the “2013 OPP”). Under the 2013 OPP, participants have the opportunity to earn compensation payable in the form of units in the second and/or third year during a three-year performance measurement period, if and only if, Vornado outperforms a predetermined total shareholder return (“TSR”) and/or outperforms the market with respect to relative total TSR. Awards under Vornado's 2013 OPP may be earned if (i) Vornado achieves a TSR greater than 14% over the two-year performance measurement period, or 21% over the three-year performance measurement period (the “Absolute Component”), and/or (ii) Vornado achieves a TSR above that of the SNL US REIT Index (the “Index”) over a two-year or three-year performance measurement period (the “Relative Component”).  To the extent awards would be earned under the Absolute Component but Vornado underperforms the Index, such awards earned would be reduced (and potentially fully negated) based on the degree to which Vornado underperforms the Index.  In certain circumstances, in the event Vornado outperforms the Index but awards would not otherwise be fully earned under the Absolute Component, awards may be increased under the Relative Component.  To the extent awards would otherwise be earned under the Relative Component but Vornado fails to achieve at least a 6% per annum absolute TSR, such awards earned under the Relative Component would be reduced based on Vornado's absolute TSR performance, with no awards being earned in the event Vornado's TSR during the applicable measurement period is 0% or negative, irrespective of the degree to which Vornado may outperform the Index.  If the designated performance objectives are achieved, OPP Units are also subject to time-based vesting requirements. Awards earned under the 2013 OPP vest 33% in year three, 33% in year four and 34% in year five. Distributions on awards earned accrue during the performance measurement period. In addition, Vornado's executive officers (for the purposes of Section 16 of the Exchange Act) are required to hold earned OPP awards for one year following vesting.

Fee_and_Other_Income

Fee and Other Income	9 Months Ended
	Sep. 30, 2013
Fee and Other Income [Abstract]	'
Fee and Other Income	'
	17. Fee and Other Income
	The following table sets forth the details of fee and other income:
				For the Three Months				For the Nine Months
		(Amounts in thousands)		Ended September 30,				Ended September 30,
				2013		2012		2013		2012
		BMS cleaning fees		$	15,898	$	16,945	$	49,071	$	49,437
		Signage revenue			8,738		4,783		23,566		14,252
		Management and leasing fees			7,982		7,234		19,675		16,534
		Lease termination fees (1)			20,432		282		87,587		1,172
		Other income			8,108		10,381		26,431		24,494
				$	61,158	$	39,625	$	206,330	$	105,889
		-1	The three months ended September 30, 2013 includes a $19,500 termination fee from a tenant at 1290 Avenue of the Americas, of which our 70% share, net of a $1,529 write-off of the straight lining of rents, was $12,121, and the nine months ended September 30, 2013 also includes $59,599 of income pursuant to a settlement agreement with Stop & Shop, which terminates our right to receive $6,000 of additional annual rent under a 1992 agreement, for a period potentially through 2031.
	Management and leasing fees include management fees from Interstate Properties, a related party, of $134,000 and $198,000 for the three months ended September 30, 2013 and 2012, respectively, and $467,000 and $588,000 for the nine months ended September 30, 2013 and 2012, respectively. The above table excludes fee income from partially owned entities, which is typically included in “income from partially owned entities” (see Note 7 – Investments in Partially Owned Entities).

Interest_and_Other_Investment_

Interest and Other Investment Income (Loss), Net	9 Months Ended
	Sep. 30, 2013
Interest and Other Investment (Loss) Income, net [Abstract]	'
Interest and Other Investment Income (Loss), Net	'
	18. Interest and Other Investment (Loss) Income, Net
	The following table sets forth the details of interest and other investment (loss) income:
				For the Three Months				For the Nine Months
	(Amounts in thousands)			Ended September 30,				Ended September 30,
				2013		2012		2013		2012
	(Loss) income from the mark-to-market of J.C. Penney derivative
		position		$	-20,012	$	4,344	$	-33,487	$	-53,343
	Interest on mezzanine loans receivable				4,766		2,852		14,783		8,867
	Dividends and interest on marketable securities				2,804		-		8,344		11,093
	Mark-to-market of investments in our deferred compensation plan (1)				269		1,116		6,207		5,267
	Non-cash impairment loss on J.C. Penney common shares				-		-		-39,487		-
	Income from prepayment penalties in connection with the
		repayment of a mezzanine loan			-		-		5,267		-
	Other, net				1,898		2,211		5,440		5,132
				$	-10,275	$	10,523	$	-32,933	$	-22,984
	-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	9 Months Ended
	Sep. 30, 2013
Interest Expense Debt [Abstract]	'
Interest And Debt Expense [Text Block]	'
	19. Interest and Debt Expense
	The following table sets forth the details of interest and debt expense:
			For the Three Months				For the Nine Months
		(Amounts in thousands)	Ended September 30,				Ended September 30,
			2013		2012		2013		2012
		Interest expense	$	125,422	$	121,230	$	375,963	$	364,223
		Amortization of deferred financing costs		4,980		5,623		15,189		16,918
		Capitalized interest		-10,532		-7,523		-28,024		-7,884
			$	119,870	$	119,330	$	363,128	$	373,257

Income_Per_Class_A_Unit

Income Per Class A Unit	9 Months Ended
	Sep. 30, 2013
Income Per Class A Unit [Abstract]	'
Income Per Class A Unit	'
	20.       Income Per Class A Unit
	The following table provides a reconciliation of both net income and the number of Class A units used in the computation of (i) basic income per Class A unit - which includes the weighted average number of Class A units outstanding without regard to dilutive potential Class A units, and (ii) diluted income per Class A unit - which includes the weighted average Class A units and dilutive unit equivalents. Dilutive unit equivalents may include our Series A convertible preferred units, Vornado options and restricted units.
				For the Three Months				For the Nine Months
	(Amounts in thousands, except per unit amounts)			Ended September 30,				Ended September 30,
				2013		2012		2013		2012
	Numerator:
		Income from continuing operations, net of income attributable
			to noncontrolling interests in consolidated subsidiaries	$	92,627	$	99,007	$	266,235	$	324,231
		Income from discontinued operations, net of income attributable
			to noncontrolling interests in consolidated subsidiaries		15,791		158,539		287,215		247,489
		Net income attributable to Vornado Realty L.P.			108,418		257,546		553,450		571,720
		Preferred unit distributions			-20,381		-22,016		-63,585		-65,337
		Preferred unit redemptions			-		11,700		-1,130		11,700
		Net income attributable to Class A unitholders			88,037		247,230		488,735		518,083
		Earnings allocated to unvested participating securities			-699		-1,008		-2,203		-2,302
		Numerator for basic income per Class A unit			87,338		246,222		486,532		515,781
		Impact of assumed conversions:
			Convertible preferred unit distributions		-		28		82		85
		Numerator for diluted income per Class A unit		$	87,338	$	246,250	$	486,614	$	515,866
	Denominator:
		Denominator for basic income per Class A unit – weighted
			average units		197,599		197,155		197,510		197,050
		Effect of dilutive securities(1):
			Vornado stock options and restricted unit awards		1,118		1,046		1,049		1,028
			Convertible preferred units		-		50		48		50
		Denominator for diluted income per Class A unit – weighted average
			units and assumed conversions		198,717		198,251		198,607		198,128
	INCOME PER CLASS A UNIT – BASIC:
		Income from continuing operations, net		$	0.36	$	0.45	$	1.01	$	1.36
		Income from discontinued operations, net			0.08		0.8		1.45		1.26
		Net income per Class A unit		$	0.44	$	1.25	$	2.46	$	2.62
	INCOME PER CLASS A UNIT – DILUTED:
		Income from continuing operations, net		$	0.36	$	0.44	$	1	$	1.35
		Income from discontinued operations, net			0.08		0.8		1.45		1.25
		Net income per Class A unit		$	0.44	$	1.24	$	2.45	$	2.6
	-1		The effect of dilutive securities in the three months ended September 30, 2013 and 2012 excludes an aggregate of 1,009 and 1,056 weighted average Class A unit equivalents, respectively, and 962 and 3,320 weighted average Class A unit equivalents in the nine months ended September 30, 2013 and 2012, respectively, as their effect was anti-dilutive.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	21.       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, including coverage for terrorist acts, 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.
	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 acts of terrorism, including nuclear, biological, chemical and radiological (“NBCR”) acts, as defined by the Terrorism Risk Insurance Program Reauthorization Act. 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. Coverage for NBCR losses is up to $2.0 billion per occurrence, for which PPIC is responsible for a deductible of $3,200,000 and 15% of the balance of a covered loss and the Federal government is responsible for the remaining 85% of a covered loss. We are ultimately responsible for any losses 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 future policy years.
	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 September 30, 2013, the aggregate dollar amount of these guarantees and master leases is approximately $367,000,000.
	At September 30, 2013, $33,068,000 of letters of credit were outstanding under one of our revolving credit facilities. Our 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 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.
	Two of our wholly owned subsidiaries that are contracted to develop and operate the Cleveland Medical Mart and Convention Center, in Cleveland, Ohio, are required to fund $11,500,000, primarily for tenant improvements, and they are responsible for operating expenses and are entitled to the net operating income, if any, upon the completion of development and the commencement of operations. As of September 30, 2013, our subsidiaries have funded approximately $3,598,000 of the commitment.
	As of September 30, 2013, we expect to fund additional capital to certain of our partially owned entities aggregating approximately $155,000,000.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	22.       Subsequent Events
	On October 1, 2013, we sold a parcel of land known as Harlem Park located at 1800 Park Avenue (at 125th Street) in New York City for $66,000,000. The sale resulted in net proceeds of approximately $63,000,000 and a net gain of approximately $23,000,000.
	On October 4, 2013, we acquired a 92.5% interest in 655 Fifth Avenue, a 57,500 square foot retail and office property located at the northeast corner of Fifth Avenue and 52nd Street in Manhattan with 50 feet of frontage on Fifth Avenue, for $277,500,000 in cash. We consolidate the accounts of the property into our consolidated financial statements.
	On October 15, 2013, we acquired, for $194,000,000, land and air rights for 137,000 zoning square feet thereby completing the assemblage for our 220 Central Park South site in Manhattan.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	23. Segment Information
	As a result of certain organizational changes and asset sales in 2012, the Merchandise Mart segment no longer meets the criteria to be a separate reportable segment; accordingly, effective January 1, 2013, the remaining assets have been reclassified to “Other.” We have also reclassified the prior period segment financial results to conform to the current year presentation. Below is a summary of net income and a reconciliation of net income to EBITDA(1) by segment for the three and nine months ended September 30, 2013 and 2012.
	(Amounts in thousands)			For the Three Months Ended September 30, 2013
													Retail
					Total		New York			Washington, DC			Properties			Toys			Other
	Property rentals				$	505,062	$	277,855		$	113,737		$	63,361		$	-		$	50,109
	Straight-line rent adjustments					15,809		9,430			234			1,491			-			4,654
	Amortization of acquired below-market
		leases, net				11,820		7,151			521			2,894			-			1,254
	Total rentals					532,691		294,436			114,492			67,746			-			56,017
	Tenant expense reimbursements					84,638		47,142			10,462			21,670			-			5,364
	Cleveland Medical Mart development project					4,893		-			-			-			-			4,893
	Fee and other income:
		BMS cleaning fees				15,898		21,191			-			-			-			-5,293
		Signage revenue				8,738		8,738			-			-			-			-
		Management and leasing fees				7,982		2,615			5,263			371			-			-267
		Lease termination fees				20,432		19,496			867			-			-			69
		Other income				8,108		581			6,520			656			-			351
	Total revenues					683,380		394,199			137,604			90,443			-			61,134
	Operating expenses					264,422		160,465			49,646			31,628			-			22,683
	Depreciation and amortization					124,079		58,058			31,109			16,455			-			18,457
	General and administrative					48,250		7,849			6,857			4,240			-			29,304
	Cleveland Medical Mart development project					3,239		-			-			-			-			3,239
	Acquisition related costs					2,818		-			-			-			-			2,818
	Total expenses					442,808		226,372			87,612			52,323			-			76,501
	Operating income (loss)					240,572		167,827			49,992			38,120			-			-15,367
	(Loss) applicable to Toys					-34,209		-			-			-			-34,209			-
	Income (loss) from partially owned entities					1,453		4,189			-2,003			188			-			-921
	Income from Real Estate Fund					22,913		-			-			-			-			22,913
	Interest and other investment
		(loss) income, net				-10,275		1,468			17			1			-			-11,761
	Interest and debt expense					-119,870		-42,538			-27,246			-10,839			-			-39,247
	Net gain on disposition of wholly owned and
		partially owned assets				15,138		-			-			1,377			-			13,761
	Income (loss) before income taxes					115,722		130,946			20,760			28,847			-34,209			-30,622
	Income tax expense					-2,222		-65			-766			-731			-			-660
	Income (loss) from continuing operations					113,500		130,881			19,994			28,116			-34,209			-31,282
	Income (loss) from discontinued operations					18,751		-			-			19,012			-			-261
	Net income (loss)					132,251		130,881			19,994			47,128			-34,209			-31,543
	Less net income attributable to
		noncontrolling interests in
		consolidated subsidiaries				-23,833		-6,556			-			-2,970			-			-14,307
	Net income (loss) attributable to
		Vornado Realty L.P.				108,418		124,325			19,994			44,158			-34,209			-45,850
	Interest and debt expense(2)					183,116		59,344			30,717			12,119			38,435			42,501
	Depreciation and amortization(2)					172,756		67,294			35,403			17,573			32,176			20,310
	Income tax (benefit) expense (2)					-20,292		67			828			731			-22,690			772
	EBITDA(1)				$	443,998	$	251,030	(3)	$	86,942	(4)	$	74,581	(5)	$	13,712		$	17,733	(6)
	See notes on page 38.
	23. Segment Information – continued
	(Amounts in thousands)			For the Three Months Ended September 30, 2012
													Retail
					Total		New York			Washington, DC			Properties			Toys			Other
	Property rentals				$	486,914	$	255,703		$	115,641		$	63,408		$	-		$	52,162
	Straight-line rent adjustments					11,391		8,140			1,267			1,873			-			111
	Amortization of acquired below-market
		leases, net				13,256		8,458			506			2,882			-			1,410
	Total rentals					511,561		272,301			117,414			68,163			-			53,683
	Tenant expense reimbursements					79,215		45,164			9,601			19,787			-			4,663
	Cleveland Medical Mart development project					72,651		-			-			-			-			72,651
	Fee and other income:
		BMS cleaning fees				16,945		23,918			-			-			-			-6,973
		Signage revenue				4,783		4,783			-			-			-			-
	Management and leasing fees				7,234		1,816			4,615			736			-			67
	Lease termination fees				282		78			128			73			-			3
	Other income				10,381		1,116			8,288			569			-			408
Total revenues					703,052		349,176			140,046			89,328			-			124,502
Operating expenses					261,512		159,048			50,305			30,726			-			21,433
Depreciation and amortization					122,241		57,967			29,825			16,359			-			18,090
General and administrative					48,456		6,739			6,668			6,103			-			28,946
Cleveland Medical Mart development project					70,431		-			-			-			-			70,431
Acquisition related costs					1,070		-			-			-			-			1,070
Total expenses					503,710		223,754			86,798			53,188			-			139,970
Operating income (loss)					199,342		125,422			53,248			36,140			-			-15,468
(Loss) applicable to Toys					-8,585		-			-			-			-8,585			-
Income (loss) from partially owned entities					21,268		9,309			-2,182			342			-			13,799
Income from Real Estate Fund					5,509		-			-			-			-			5,509
Interest and other investment
	income, net				10,523		1,057			24			4			-			9,438
Interest and debt expense					-119,330		-36,817			-28,311			-13,292			-			-40,910
Income (loss) before income taxes					108,727		98,971			22,779			23,194			-8,585			-27,632
Income tax (expense) benefit					-3,015		-815			25			-			-			-2,225
Income (loss) from continuing operations					105,712		98,156			22,804			23,194			-8,585			-29,857
Income from discontinued operations					158,444		-			126,437			11,370			-			20,637
Net income (loss)					264,156		98,156			149,241			34,564			-8,585			-9,220
Less net (income) loss attributable to
	noncontrolling interests in
	consolidated subsidiaries				-6,610		-2,092			-			97			-			-4,615
Net income (loss) attributable to
	Vornado Realty L.P.				257,546		96,064			149,241			34,661			-8,585			-13,835
Interest and debt expense(2)					183,241		46,823			33,280			17,499			34,526			51,113
Depreciation and amortization(2)					177,593		62,905			35,071			21,345			33,160			25,112
Income tax expense (benefit)(2)					3,850		871			-25			-			-11,118			14,122
EBITDA(1)				$	622,230	$	206,663	(3)	$	217,567	(4)	$	73,505	(5)	$	47,983		$	76,512	(6)
See notes on page 38.
23. Segment Information – continued
(Amounts in thousands)			For the Nine Months Ended September 30, 2013
												Retail
				Total		New York			Washington, DC			Properties			Toys			Other
Property rentals				$	1,521,127	$	839,349		$	338,742		$	189,964		$	-		$	153,072
Straight-line rent adjustments					47,989		27,289			4,242			3,741			-			12,717
Amortization of acquired below-market
	leases, net				40,326		26,184			1,543			8,669			-			3,930
Total rentals					1,609,442		892,822			344,527			202,374			-			169,719
Tenant expense reimbursements					236,580		128,598			31,264			63,601			-			13,117
Cleveland Medical Mart development project					34,026		-			-			-			-			34,026
Fee and other income:
	BMS cleaning fees				49,071		63,192			-			-			-			-14,121
	Signage revenue				23,566		23,566			-			-			-			-
	Management and leasing fees				19,675		7,533			11,529			1,170			-			-557
	Lease termination fees				87,587		24,986			1,417			59,797			-			1,387
	Other income				26,431		4,550			17,915			1,448			-			2,518
Total revenues					2,086,378		1,145,247			406,652			328,390			-			206,089
Operating expenses					784,031		478,318			145,258			98,374			-			62,081
Depreciation and amortization					400,952		203,679			92,678			47,935			-			56,660
General and administrative					157,155		25,552			20,655			14,824			-			96,124
Cleveland Medical Mart development project					29,764		-			-			-			-			29,764
Acquisition related costs					6,769		-			-			-			-			6,769
Total expenses					1,378,671		707,549			258,591			161,133			-			251,398
Operating income (loss)					707,707		437,698			148,061			167,257			-			-45,309
(Loss) applicable to Toys					-69,311		-			-			-			-69,311			-
Income (loss) from partially owned entities					23,691		14,020			-6,545			1,512			-			14,704
Income from Real Estate Fund					73,947		-			-			-			-			73,947
Interest and other investment (loss)
	income, net				-32,933		4,076			99			5			-			-37,113
Interest and debt expense					-363,128		-125,991			-83,350			-34,523			-			-119,264
Net (loss) gain on disposition of wholly
	owned and partially owned assets				-20,581		-			-			1,377			-			-21,958
Income (loss) before income taxes					319,392		329,803			58,265			135,628			-69,311			-134,993
Income tax expense					-6,172		-1,298			-1,949			-1,480			-			-1,445
Income (loss) from continuing operations					313,220		328,505			56,316			134,148			-69,311			-136,438
Income from discontinued operations					290,279		-			-			290,267			-			12
Net income (loss)					603,499		328,505			56,316			424,415			-69,311			-136,426
Less net income attributable to
	noncontrolling interests in
	consolidated subsidiaries				-50,049		-9,518			-			-3,079			-			-37,452
Net income (loss) attributable to
	Vornado Realty L.P.				553,450		318,987			56,316			421,336			-69,311			-173,878
Interest and debt expense(2)					551,357		163,579			93,715			40,057			119,347			134,659
Depreciation and amortization(2)					549,072		220,280			105,799			52,440			103,732			66,821
Income tax expense(2)					18,101		1,444			2,134			1,480			10,959			2,084
EBITDA(1)				$	1,671,980	$	704,290	(3)	$	257,964	(4)	$	515,313	(5)	$	164,727		$	29,686	(6)
See notes on page 38.
23. Segment Information – continued
(Amounts in thousands)				For the Nine Months Ended September 30, 2012
												Retail
				Total		New York			Washington, DC			Properties			Toys			Other
Property rentals				$	1,443,478	$	735,587		$	356,459		$	190,671		$	-		$	160,761
Straight-line rent adjustments					53,169		42,334			4,382			5,265			-			1,188
Amortization of acquired below-market
	leases, net				39,569		23,776			1,537			9,989			-			4,267
Total rentals					1,536,216		801,697			362,378			205,925			-			166,216
Tenant expense reimbursements					220,679		118,861			30,471			61,307			-			10,040
Cleveland Medical Mart development project					184,014		-			-			-			-			184,014
Fee and other income:
	BMS cleaning fees				49,437		70,476			-			-			-			-21,039
	Signage revenue				14,252		14,252			-			-			-			-
	Management and leasing fees				16,534		4,037			9,782			2,640			-			75
	Lease termination fees				1,172		334			256			74			-			508
	Other income				24,494		3,449			18,846			1,232			-			967
Total revenues					2,046,798		1,013,106			421,733			271,178			-			340,781
Operating expenses					749,213		447,910			143,923			97,154			-			60,226
Depreciation and amortization					381,270		168,391			107,395			51,877			-			53,607
General and administrative					150,578		21,980			19,849			18,803			-			89,946
Cleveland Medical Mart development project					177,127		-			-			-			-			177,127
Acquisition related costs					4,314		-			-			-			-			4,314
Total expenses					1,462,502		638,281			271,167			167,834			-			385,220
Operating income (loss)					584,296		374,825			150,566			103,344			-			-44,439
Income applicable to Toys					88,696		-			-			-			88,696			-
Income (loss) from partially owned entities					53,491		20,345			-4,571			1,040			-			36,677
Income from Real Estate Fund					37,572		-			-			-			-			37,572
Interest and other investment (loss)
	income, net				-22,984		3,166			97			24			-			-26,271
Interest and debt expense					-373,257		-109,365			-85,408			-45,362			-			-133,122
Net gain on disposition of wholly owned and
	partially owned assets				4,856		-			-			-			-			4,856
Income (loss) before income taxes					372,670		288,971			60,684			59,046			88,696			-124,727
Income tax expense					-17,319		-2,480			-1,277			-			-			-13,562
Income (loss) from continuing operations					355,351		286,491			59,407			59,046			88,696			-138,289
Income (loss) from discontinued operations					247,297		-640			130,979			37,456			-			79,502
Net income (loss)					602,648		285,851			190,386			96,502			88,696			-58,787
Less net (income) loss attributable to
	noncontrolling interests in
	consolidated subsidiaries				-30,928		-7,266			-			308			-			-23,970
Net income (loss) attributable to
	Vornado Realty L.P.				571,720		278,585			190,386			96,810			88,696			-82,757
Interest and debt expense(2)					567,265		140,294			99,486			58,039			103,388			166,058
Depreciation and amortization(2)					552,794		188,480			122,987			65,751			100,371			75,205
Income tax expense(2)					50,076		2,677			1,532			-			17,982			27,885
EBITDA(1)				$	1,741,855	$	610,036	(3)	$	414,391	(4)	$	220,600	(5)	$	310,437		$	186,391	(6)
See notes on the following page.
23. Segment Information – continued
	Notes to preceding tabular information:
-1	EBITDA represents "Earnings Before Interest, Taxes, Depreciation and Amortization." We consider EBITDA a supplemental 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 (benefit) expense 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						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Office						$	172,367		$	139,894		$	476,849		$	418,414
	Retail							59,782			46,165			177,394			135,399
	Alexander's (decrease due to sale of Kings Plaza
		in November 2012)						10,387			13,080			31,141			39,477
	Hotel Pennsylvania							8,494			7,524			18,906			16,746
		Total New York					$	251,030		$	206,663		$	704,290		$	610,036
-4	The elements of "Washington, DC" EBITDA are summarized below.
							For the Three Months						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Office, excluding the Skyline Properties (a)						$	69,220		$	197,009		$	202,463		$	350,296
	Skyline properties							6,841			9,936			22,546			32,127
		Total Office						76,061			206,945			225,009			382,423
	Residential							10,881			10,622			32,955			31,968
		Total Washington, DC					$	86,942		$	217,567		$	257,964		$	414,391
	(a)		The three and nine months ended September 30, 2012, includes a $126,621 net gain on sale of real estate.
-5	The elements of "Retail Properties" EBITDA are summarized below.
							For the Three Months						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Strip shopping centers(a)						$	59,175		$	49,378		$	264,065		$	148,554
	Regional malls(b)							15,406			24,127			251,248			72,046
		Total Retail properties					$	74,581		$	73,505		$	515,313		$	220,600
	(a)		The three and nine months ended September 30, 2013, includes $16,087 and $81,806, respectively, of net gains on sale of real estate and the nine months ended also includes $59,599 of income pursuant to a settlement agreement with Stop & Shop.
	(b)		The nine months ended September 30, 2013, includes a $202,275 net gain on sale of the Green Acres Mall.
23. Segment Information – continued
	Notes to preceding tabular information - continued:
-6	The elements of "other" EBITDA are summarized below.
							For the Three Months						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Our share of Real Estate Fund:
		Income before net realized/unrealized gains					$	1,997		$	1,874		$	1,746		$	4,162
		Net unrealized gains						3,092			1,389			14,869			8,384
		Net realized gain						2,046			-			2,046			-
		Carried interest						356			-2,541			15,965			-
	Total							7,491			722			34,626			12,546
	Merchandise Mart Building, 7 West 34th Street and trade shows							15,006			13,869			52,167			46,518
	555 California Street							10,720			10,714			32,371			31,406
	India real estate ventures							695			1,841			4,708			1,718
	LNR(a)							-			18,773			20,443			46,006
	Lexington(b)							-			7,859			6,931			24,780
	Other investments							5,330			9,280			14,207			30,226
								39,242			63,058			165,453			193,200
	Corporate general and administrative expenses(c)							-23,467			-22,811			-71,054			-66,940
	Investment income and other, net(c)							11,108			6,854			39,153			30,900
	Net gain on sale of marketable securities							31,741			-			31,741			3,582
	(Loss) income from the mark-to-market of J.C. Penney
		derivative position						-20,012			4,344			-33,487			-53,343
	Loss on sale of J.C. Penney common shares							-18,114			-			-54,914			-
	Non-cash impairment loss on J.C. Penney common shares							-			-			-39,487			-
	Acquisition related costs							-2,818			-1,070			-6,769			-4,314
	Net gain on sale of residential condominiums							134			-			1,139			1,274
	Merchandise Mart discontinued operations (including
		net gains on sale of assets)						-81			32,087			2,065			88,488
	Verde Realty impairment loss							-			-4,936			-			-4,936
	Severance costs (primarily reduction in force at
		the Merchandise Mart)						-			-1,014			-4,154			-1,520
							$	17,733		$	76,512		$	29,686		$	186,391
	(a)		On April 22, 2013, LNR was sold (see page 14 for details).
	(b)		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
	(c)		The amounts in these captions (for this table only) exclude income(expense) from the mark-to-market of our deferred compensation plan.

Significant_Accounting_Policie

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
Real Estate Fund [Abstract]	'
Real Estate Fund Accounting [Policy Text Block]	'
	The Fund is accounted for under the AICPA Investment Company Guide 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.
Fair Value Disclosures [Abstract]	'
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 in our consolidated financial statements 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) interest rate swaps and (v) mandatorily redeemable instruments (Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units).
	Fair Value Measurements on a Nonrecurring Basis
	Assets measured at fair value on a nonrecurring basis on our consolidated balance sheets consist primarily of our investment in Toys “R” Us and real estate assets that were written-down to estimated fair value at December 31, 2012. The fair values of these assets were 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. Generally, we consider multiple valuation techniques when measuring fair values but in certain circumstances, a single valuation technique may be appropriate.
	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)	9 Months Ended
	Sep. 30, 2013
Real Estate Fund [Abstract]	'
Schedule Of Income And Loss From The Fund [Table Text Block]	'
			For the Three Months				For the Nine Months
	(Amounts in thousands)		Ended September 30,				Ended September 30,
			2013		2012		2013		2012
	Net investment income (loss)		$	2,362	$	-49	$	6,287	$	4,035
	Net realized gain			8,184		-		8,184		-
	Net unrealized gains			12,367		5,558		59,476		33,537
	Income from Real Estate Fund			22,913		5,509		73,947		37,572
	Less (income) attributable to noncontrolling interests			-15,422		-4,787		-39,321		-25,026
	Income from Real Estate Fund attributable to Vornado (1)		$	7,491	$	722	$	34,626	$	12,546
	___________________________________
	-1	Excludes management, leasing and development fees of $770 and $954 for the three months ended September 30, 2013 and 2012, respectively, and $2,446 and $2,374 for the nine months ended September 30, 2013 and 2012, respectively, which are included as a component of "fee and other income" on our consolidated statements of income.

Marketable_Securities_and_Deri1

Marketable Securities and Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Unrealized Gain (Loss) on Investments [Abstract]	'
Unrealized Gain (Loss) on Investments [Table Text Block]	'
	(Amounts in thousands)		As of September 30, 2013						As of December 31, 2012
					GAAP		Unrealized				GAAP		Unrealized
			Fair Value		Cost		Gain		Fair Value		Cost		Gain
	Equity securities:
		Lexington	$	207,407	$	72,549	$	134,858	$	-	$	-	$	-
		J.C. Penney		-		-		-		366,291		366,291		-
		Other		3,147		91		3,056		31,897		12,465		19,432
			$	210,554	$	72,640	$	137,914	$	398,188	$	378,756	$	19,432

Investments_in_Partially_Owned1

Investments in Partially Owned Entities (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule Of Equity Method Investments [Line Items]	'
Schedule of Purchase Price Allocation [Table Text Block]	'
		(Amounts in thousands)
		Land	$	602,662
		Building and improvements		252,844
		Acquired above-market leases (included in identified intangible assets)		13,115
		Acquired in-place leases (included in identified intangible assets)		67,879
		Other assets		7,374
		Acquired below-market leases (included in deferred revenue)		-99,074
		Purchase price	$	844,800
Equity Method Investments	'
						Percentage
	(Amounts in thousands)					Ownership at				Balance as of
	Investments:					30-Sep-13				30-Sep-13			31-Dec-12
	Toys							32.60%		$	378,615		$	478,041
	Alexander’s							32.40%		$	167,618		$	171,013
	Lexington(1)							n/a			-			75,542
	LNR(2)							n/a			-			224,724
	India real estate ventures							4.0%-36.5%			90,200			95,516
	Partially owned office buildings:
		280 Park Avenue						49.50%			229,152			197,516
		650 Madison Avenue (see page 15 for details)						20.10%			121,775			-
		Rosslyn Plaza						43.7%-50.4%			59,416			62,627
		West 57th Street properties						50.00%			56,743			57,033
		One Park Avenue						30.30%			56,064			50,509
		666 Fifth Avenue Office Condominium						49.50%			40,047			35,527
		330 Madison Avenue						25.00%			33,991			30,277
		Warner Building						55.00%			13,387			8,775
		Fairfax Square						20.00%			5,191			5,368
		Other partially owned office buildings						Various			9,338			9,315
	Other investments:
		Independence Plaza (includes $26,266 attributable
			to non-controlling interests)(3)					50.10%			164,488			-
		Monmouth Mall						50.00%			6,876			7,205
		Downtown Crossing, Boston(4)						n/a			-			48,122
		Other investments(5)						Various			115,442			147,187
										$	1,169,728		$	1,226,256
	-1		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
	-2		On April 22, 2013, LNR was sold (see page 14 for details).
	-3		On June 7, 2013, we sold an 8.65% economic interest in the property (see page 15 for details).
	-4		On April 24, 2013, the joint venture sold the site in Downtown Crossing, Boston (see note 3 on page 17 for details).
	-5		Includes interests in 85 10th Avenue, Fashion Centre Mall, 50-70 West 93rd Street and others.
						Percentage		For the Three Months						For the Nine Months
	(Amounts in thousands)					Ownership		Ended September 30,						Ended September 30,
	Our Share of Net Income (Loss):					30-Sep-13		2013			2012			2013			2012
	Toys:
		Equity in net (loss) income before income taxes				32.60%		$	-58,746		$	-22,074		$	14,737		$	99,649
		Income tax benefit (expense)							22,690			11,118			-10,959			-17,982
		Equity in net (loss) income							-36,056			-10,956			3,778			81,667
		Non-cash impairment loss (see page 13 for details)							-			-			-78,542			-
		Management fees							1,847			2,371			5,453			7,029
								$	-34,209		$	-8,585		$	-69,311		$	88,696
	Alexander’s:
		Equity in net income				32.40%		$	4,299		$	7,137		$	12,785		$	19,210
		Management, leasing and development fees							1,676			1,821			5,017			5,617
									5,975			8,958			17,802			24,827
	Lexington(1)					n/a			-			-323			-979			371
	LNR(2)					n/a			-			16,600			18,731			39,319
	India real estate ventures					4.0%-36.5%			-1,449			82			-2,630			-4,526
	Partially owned office buildings:
		Warner Building				55.00%			-2,004			-2,839			-6,346			-7,438
		280 Park Avenue				49.50%			-1,890			-1,717			-6,480			-9,267
		666 Fifth Avenue Office Condominium				49.50%			1,858			1,744			5,776			5,244
		330 Madison Avenue				25.00%			1,225			1,224			3,714			2,036
		Rosslyn Plaza				43.7%-50.4%			-707			-204			-2,158			99
		One Park Avenue				30.30%			680			256			1,054			890
		1101 17th Street				55.00%			376			591			996			1,920
		West 57th Street properties				50.00%			47			167			415			732
		Fairfax Square				20.00%			-24			-33			-87			-85
		Other partially owned office buildings				Various			477			505			1,530			1,587
									38			-306			-1,586			-4,282
	Other investments:
		Independence Plaza (see page 15 for details)				50.10%			-2,081			1,828			-3,199			5,243
		Monmouth Mall				50.00%			165			347			1,450			1,007
	Downtown Crossing, Boston(3)				n/a			-			-38			-2,358			-872
	Other investments(4)				Various			-1,195			-5,880			-3,540			-7,596
								-3,111			-3,743			-7,647			-2,218
							$	1,453		$	21,268		$	23,691		$	53,491
-1		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
-2		On April 22, 2013, LNR was sold (see page 14 for details).
-3		On April 24, 2013, the joint venture sold the site in Downtown Crossing, Boston, and we received approximately $45,000 for our 50% interest. In connection therewith, we recognized a $2,335 impairment loss in the first quarter.
-4		Includes interests in 85 10th Avenue, Fashion Centre Mall, 50-70 West 93rd Street and others.
Schedule of debt of partially owned entities	'
				Percentage				Interest		100% of
				Ownership at				Rate at		Partially Owned Entities’ Debt at
	(Amounts in thousands)			September 30,				September 30,		September 30,			December 31,
				2013		Maturity		2013		2013			2012
	Toys:
		Notes, loans and mortgages payable		32.60%		2014-2021		7.69%		$	5,253,323		$	5,683,733
	Alexander's:
		Mortgages payable		32.40%		2014-2018		3.84%		$	1,054,046		$	1,065,916
	Lexington(1):
		Mortgages payable		n/a		n/a		n/a		$	-		$	1,994,179
	LNR(2):
		Mortgages payable		n/a		n/a		n/a		$	-		$	309,787
		Liabilities of consolidated CMBS and CDO trusts				n/a		n/a			-			97,211,734
										$	-		$	97,521,521
	Partially owned office buildings:
		666 Fifth Avenue Office Condominium mortgage
			payable	49.50%		19-Feb		6.76%		$	1,155,038		$	1,109,700
		650 Madison Avenue mortgage payable		20.10%		20-Oct		4.39%			800,000			-
		280 Park Avenue mortgage payable		49.50%		16-Jun		6.64%			738,582			738,228
		Warner Building mortgage payable		55.00%		16-May		6.26%			292,700			292,700
		One Park Avenue mortgage payable		30.30%		16-Mar		5.00%			250,000			250,000
		330 Madison Avenue mortgage payable		25.00%		15-Jun		1.68%			150,000			150,000
		Fairfax Square mortgage payable		20.00%		14-Dec		7.00%			69,452			70,127
		1101 17th Street mortgage payable		55.00%		15-Jan		1.43%			31,000			31,000
		Rosslyn Plaza mortgage payable		43.7%-50.4%		16-Mar		2.68%			23,785			-
		West 57th Street properties mortgages payable		50.00%		23-Jul		3.50%			20,000			20,434
		Other		Various		Various		6.36%			69,280			69,704
										$	3,599,837		$	2,731,893
	India Real Estate Ventures:
		TCG Urban Infrastructure Holdings mortgages
			payable	25.00%		2013-2022		13.63%		$	213,963		$	236,579
	Other:
		Independence Plaza (see page 15 for details)		50.10%		18-Jun		3.48%			550,000			-
		Monmouth Mall mortgage payable		50.00%		15-Sep		5.44%			158,296			159,896
		Other(3)		Various		Various		5.01%			972,135			990,647
										$	1,680,431		$	1,150,543
	-1		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
	-2		On April 22, 2013, LNR was sold (see page 14 for details).
	-3		Includes interests in Fashion Centre Mall, 50-70 West 93rd Street and others.
Toys R Us [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Equity Method Investment Summarized Financial Information Table [Text Block]	'
		(Amounts in thousands)										Balance as of
		Balance Sheet:										3-Aug-13			27-Oct-12
			Assets									$	11,274,000		$	12,953,000
			Liabilities										9,562,000			11,190,000
			Noncontrolling interests										72,000			44,000
			Toys “R” Us, Inc. equity										1,640,000			1,719,000
					For the Three Months Ended							For the Nine Months Ended
		Income Statement:			3-Aug-13				28-Jul-12			3-Aug-13			28-Jul-12
			Total revenues		$	2,377,000			$	2,552,000		$	10,555,000		$	11,089,000
			Net (loss) income attributable to Toys			-111,000				-34,000			11,000			249,000
Alexanders Inc [Member]	'
Schedule Of Equity Method Investments [Line Items]	'
Equity Method Investment Summarized Financial Information Table [Text Block]	'
	(Amounts in thousands)									Balance as of
	Balance Sheet:									30-Sep-13			31-Dec-12
		Assets								$	1,471,000		$	1,482,000
		Liabilities									1,141,000			1,150,000
		Stockholders' equity									330,000			332,000
				For the Three Months Ended						For the Nine Months Ended
	Income Statement:			30-Sep-13			30-Sep-12			30-Sep-13			30-Sep-12
		Total revenues		$	50,000		$	49,000		$	146,000		$	143,000
		Net income attributable to Alexander’s			14,000			19,000			41,000			57,000

Discontinued_Operations_Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2013
Discontinued Operations Tables [Abstract]	'
Schedule Of Assets And Liabilities And Results Of Operations Related To Discontinued Operations	'
			Assets Related to				Liabilities Related to
	(Amounts in thousands)		Discontinued Operations as of				Discontinued Operations as of
			September 30,		December 31,		September 30,		December 31,
			2013		2012		2013		2012
	Retail properties		$	20,428	$	600,640	$	-	$	442,293
	Other properties			6,985		33,499		-		-
	Total		$	27,413	$	634,139	$	-	$	442,293
			For the Three Months				For the Nine Months
	(Amounts in thousands)		Ended September 30,				Ended September 30,
			2013		2012		2013		2012
	Total revenues		$	2,963	$	35,576	$	35,193	$	144,274
	Total expenses			2,488		27,877		27,177		106,924
				475		7,699		8,016		37,350
	Net gains on sale of real estate (2013 includes $2,909
		attributable to noncontrolling interests)		18,996		131,088		286,990		203,801
	Gain on sale of Canadian Trade Shows, net of $11,448 of
		income taxes		-		19,657		-		19,657
	Impairment losses			-720		-		-4,727		-13,511
	Income from discontinued operations		$	18,751	$	158,444	$	290,279	$	247,297

Identified_Intangible_Assets_a1

Identified Intangible Assets and Intangible Liabilities (Tables)	9 Months Ended
	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]	'
Schedule of Identified Intangible Assets and Intangible Liabilities (Table)	'
			Balance as of
			September 30,		December 31,
		(Amounts in thousands)	2013		2012
		Identified intangible assets:
		Gross amount	$	572,641	$	752,922
		Accumulated amortization		-297,391		-346,613
		Net	$	275,250	$	406,309
		Identified intangible liabilities (included in deferred revenue):
		Gross amount	$	811,917	$	902,525
		Accumulated amortization		-372,329		-341,536
		Net	$	439,588	$	560,989
Below Market Leases Net Of Above Market Leases [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
		(Amounts in thousands)
		2014	$	41,069
		2015		38,263
		2016		36,321
		2017		30,936
		2018		29,171
Other Identified Intangible Assets [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
		(Amounts in thousands)
		2014	$	26,708
		2015		21,543
		2016		18,363
		2017		15,203
		2018		11,005
Tenant Under Ground Leases [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
		(Amounts in thousands)
		2014	$	3,921
		2015		3,921
		2016		3,921
		2017		3,921
		2018		3,921

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Schedule of Debt [Table Text Block]	'
						Interest
		(Amounts in thousands)				Rate at	Balance at
						September 30,	September 30,		December 31,
		Mortgages payable:			Maturity (1)	2013	2013		2012
		Fixed rate:
			New York:
				1290 Avenue of the Americas (70% owned)	22-Nov	3.34%	$	950,000	$	950,000
				Two Penn Plaza	18-Mar	5.13%		425,000		425,000
				666 Fifth Avenue Retail Condominium(2)	23-Mar	3.61%		390,000		-
				770 Broadway	16-Mar	5.65%		353,000		353,000
				888 Seventh Avenue	16-Jan	5.71%		318,554		318,554
				350 Park Avenue	17-Jan	3.75%		300,000		300,000
				909 Third Avenue	15-Apr	5.64%		196,013		199,198
				828-850 Madison Avenue Retail Condominium	18-Jun	5.29%		80,000		80,000
				510 Fifth Avenue	16-Jan	5.60%		30,872		31,253
			Washington, DC:
				Skyline Properties(3)	17-Feb	5.74%		736,259		704,957
				River House Apartments	15-Apr	5.43%		195,546		195,546
				2101 L Street	24-Aug	3.97%		150,000		150,000
				2121 Crystal Drive	23-Mar	5.51%		149,005		150,000
				Bowen Building	16-Jun	6.14%		115,022		115,022
				1215 Clark Street, 200 12th Street and 251 18th Street	25-Jan	7.09%		103,794		105,724
				West End 25	21-Jun	4.88%		101,671		101,671
				Universal Buildings	14-Apr	6.56%		89,321		93,226
				2011 Crystal Drive	17-Aug	7.30%		78,875		79,624
				220 20th Street	18-Feb	4.61%		73,003		73,939
				1550 and 1750 Crystal Drive	14-Nov	7.08%		71,841		74,053
				2231 Crystal Drive	n/a	n/a		-		41,298
				1225 Clark Street	n/a	n/a		-		24,834
			Retail Properties:
				Cross-collateralized mortgages on 40 strip shopping centers	20-Sep	4.25%		563,692		573,180
				Bergen Town Center(4)	23-Apr	3.56%		300,000		-
				Montehiedra Town Center(5)	16-Jul	6.04%		120,000		120,000
				North Bergen (Tonnelle Avenue)	18-Jan	4.59%		75,000		75,000
				Las Catalinas Mall	13-Nov	6.97%		52,822		54,101
				Broadway Mall	n/a	n/a		-		85,180
				Other	06/14-11/34	5.12%-7.30%		68,659		86,641
			Other:
				555 California Street (70% owned)	21-Sep	5.10%		600,000		600,000
				Merchandise Mart	16-Dec	5.57%		550,000		550,000
				Borgata Land	21-Feb	5.14%		59,518		60,000
		Total fixed rate mortgages payable				4.91%	$	7,297,467	$	6,771,001
		___________________
			See notes on page 23.
								Interest
		(Amounts in thousands)						Rate at	Balance at
						Spread over		September 30,	September 30,		December 31,
		Mortgages payable:			Maturity (1)	LIBOR		2013	2013		2012
		Variable rate:
			New York:
				Eleven Penn Plaza	19-Jan	L+235		2.53%	$	330,000	$	330,000
				100 West 33rd Street - office and retail	17-Mar	L+250		2.68%		325,000		325,000
				4 Union Square South - retail	19-Nov	L+215		2.33%		120,000		120,000
				435 Seventh Avenue - retail	19-Aug	L+225		2.43%		98,000		98,000
				866 UN Plaza	16-May	L+125		1.43%		44,978		44,978
				Independence Plaza (see page 15 for details)	n/a	n/a		n/a		-		334,225
			Washington, DC:
				River House Apartments	18-Apr	n/a(6)		1.58%		64,000		64,000
				2200 / 2300 Clarendon Boulevard	15-Jan	L+75		0.93%		42,806		47,353
				1730 M and 1150 17th Street	14-Jun	L+140		1.58%		43,581		43,581
			Retail:
				Cross-collateralized mortgages on 40 strip
				shopping centers (7)	20-Sep	L+136(7)		2.36%		60,000		60,000
			Bergen Town Center(4)	n/a	n/a		n/a		-		282,312
			Other	18-Jul	L+130		1.48%		17,000		-
		Other:
			220 Central Park South	13-Oct	L+275		2.93%		123,750		123,750
		Total variable rate mortgages payable					2.39%		1,269,115		1,873,199
		Total mortgages payable					4.54%	$	8,566,582	$	8,644,200
	Senior unsecured notes:
		Senior unsecured notes due 2015		15-Apr			4.25%	$	499,752	$	499,627
		Senior unsecured notes due 2039 (8)		Oct-39			7.88%		452,500		460,000
		Senior unsecured notes due 2022		22-Jan			5.00%		398,517		398,381
		Total senior unsecured notes					5.69%	$	1,350,769	$	1,358,008
	Unsecured revolving credit facilities:
		$1.25 billion unsecured revolving credit facility		16-Nov	L+125		-	$	-	$	1,150,000
		$1.25 billion unsecured revolving credit facility
			($33,068 and $22,807 reserved for outstanding
			letters of credit) (9)	18-Jun	L+115		1.33%		83,982		20,000
		Total unsecured revolving credit facilities					1.33%	$	83,982	$	1,170,000
	___________________________
		See notes on the following page.
	Notes to preceding tabular information (amounts in thousands):
	-1	Represents the extended maturity for certain loans in which we have the unilateral right, ability and intent to extend.
	-2	On February 20, 2013, we completed a $390,000 financing of this property. The 10-year fixed-rate interest only loan bears interest at 3.61%. This property was previously unencumbered.
	-3	On October 31, 2013, we completed the restructuring of the $678,000 (face amount) 5.74% Skyline properties mortgage loan. The loan has been separated into two tranches; a senior $350,000 position and a junior $328,000 position. The maturity date has been extended from February 2017 to February 2022, with a one-year extension option. The effective interest rate is 2.965%. Capital we invest to re-lease the property will be senior to the $328,000 junior position.
	-4	On March 25, 2013, we completed a $300,000 financing of this property. The 10-year fixed-rate interest only loan bears interest at 3.56%. The property was previously encumbered by a $282,312 floating-rate loan.
	-5	On May 13, 2013, we notified the lender that due to tenants vacating, the property's operating cash flow will be insufficient to pay the debt service; accordingly, at our request, the mortgage loan was transferred to the special servicer. We are in discussions with the special servicer to restructure the terms of the loan; there can be no assurance as to the timing and ultimate resolution of these discussions.
	-6	Interest at the Freddie Mac Reference Note Rate plus 1.53%.
	-7	LIBOR floor of 1.00%.
	-8	May be redeemed at our option in whole or in part beginning on October 1, 2014, at a price equal to the principal amount plus accrued interest.
	-9	On March 28, 2013, we extended this revolving credit facility from June 2015 to June 2017, with two six-month extension options. The interest on the extended facility was reduced from LIBOR plus 135 basis points to LIBOR plus 115 basis points. In addition, the facility fee was reduced from 30 basis points to 20 basis points.

Redeemable_Partnership_Units_T

Redeemable Partnership Units (Tables)	9 Months Ended
	Sep. 30, 2013
Redeemable Partnership Units Disclosure [Abstract]	'
Summary Of Activity Of Redeemable Noncontrolling Interests	'
		(Amounts in thousands)
		Balance at December 31, 2011	$	1,160,677
		Net income		40,595
		Other comprehensive loss		-15,717
		Distributions		-34,138
		Redemption of Class A units, at redemption value		-51,216
		Adjustments to carry redeemable Class A units at redemption value		63,657
		Redemption of Series D-10 and D-14 redeemable units		-168,300
		Other, net		-59
		Balance at September 30, 2012	$	995,499
		Balance at December 31, 2012	$	944,152
		Net income		28,960
		Other comprehensive income		5,982
		Distributions		-25,827
		Redemption of Class A units, at redemption value		-19,627
		Adjustments to carry redeemable Class A units at redemption value		43,709
		Redemption of Series D-15 redeemable units		-36,900
		Other, net		10,649
		Balance at September 30, 2013	$	951,098

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2013
Accumulated Other Comprehensive Income [Abstract]	'
Schedule of Accumulated Other Comprehensive Income (Loss)	'
				For the Three Months Ended September 30, 2013
						Securities			Pro rata share of		Interest
						available-			nonconsolidated		rate
	(Amounts in thousands)			Total		for-sale			subsidiaries' OCI		swap		Other
	Balance as of June 30, 2013			$	132,894	$	188,570		$	-12,041	$	-35,505	$	-8,130
		OCI before reclassifications			-7,163		-8,252			-1,669		-295		3,053
		Amounts reclassified from AOCI			-42,404		-42,404	(1)		-		-		-
	Net current period OCI				-49,567		-50,656			-1,669		-295		3,053
	Balance as of September 30, 2013			$	83,327	$	137,914		$	-13,710	$	-35,800	$	-5,077
	-1		Reclassified to "net gain (loss) on disposition of wholly owned and partially owned assets" on our consolidated statements of income.
				For the Nine Months Ended September 30, 2013
						Securities			Pro rata share of		Interest
						available-			nonconsolidated		rate
	(Amounts in thousands)			Total		for-sale			subsidiaries' OCI		swap		Other
	Balance as of December 31, 2012			$	-18,946	$	19,432		$	11,313	$	-50,065	$	374
		OCI before reclassifications			144,677		160,886			-25,023		14,265		-5,451
		Amounts reclassified from AOCI			-42,404		-42,404	(1)		-		-		-
	Net current period OCI				102,273		118,482			-25,023		14,265		-5,451
	Balance as of September 30, 2013			$	83,327	$	137,914		$	-13,710	$	-35,800	$	-5,077
	-1		Reclassified to "net gain (loss) on disposition of wholly owned and partially owned assets" on our consolidated statements of income.

Variable_Interest_Entities_Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2013
Variable Interest Entities [Abstract]	'
Schedule of Variable Interest Entities [Table Text Block]	'
			As of September 30,		As of December 31,
		(Amounts in thousands)	2013		2012
		Total assets	$	-	$	957,730
		Total liabilities	$	-	$	443,894
		Noncontrolling interest	$	-	$	193,933

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
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 September 30, 2013
		(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Marketable securities			$	210,554	$	210,554	$	-	$	-
		Real Estate Fund investments (75% of which is attributable to
			noncontrolling interests)			635,990		-		-		635,990
		Deferred compensation plan assets (included in other assets)				111,752		45,227		-		66,525
			Total assets		$	958,296	$	255,781	$	-	$	702,515
		Mandatorily redeemable instruments (included in other liabilities)			$	55,097	$	55,097	$	-	$	-
		Interest rate swap (included in other liabilities)				35,800		-		35,800		-
			Total liabilities		$	90,897	$	55,097	$	35,800	$	-
					As of December 31, 2012
		(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Marketable securities			$	398,188	$	398,188	$	-	$	-
		Real Estate Fund investments (75% of which is attributable to
			noncontrolling interests)			600,786		-		-		600,786
		Deferred compensation plan assets (included in other assets)				105,200		42,569		-		62,631
		J.C. Penney derivative position (included in other assets)(1)				11,165		-		11,165		-
			Total assets		$	1,115,339	$	440,757	$	11,165	$	663,417
		Mandatorily redeemable instruments (included in other liabilities)			$	55,011	$	55,011	$	-	$	-
		Interest rate swap (included in other liabilities)				50,065		-		50,065		-
			Total liabilities		$	105,076	$	55,011	$	50,065	$	-
		(1) Represents the cash deposited with the counterparty in excess of the mark-to-market loss on the derivative position.
Schedule Of Carrying Amounts And Fair Values Of Financial Instruments [Table Text Block]	'
					As of September 30, 2013				As of December 31, 2012
					Carrying		Fair		Carrying		Fair
		(Amounts in thousands)			Amount		Value		Amount		Value
			Cash equivalents		$	380,248	$	380,248	$	543,000	$	543,000
			Mortgage and mezzanine loans receivable			176,388		176,098		225,359		221,446
					$	556,636	$	556,346	$	768,359	$	764,446
			Debt:
				Mortgages payable	$	8,566,582	$	8,638,000	$	8,644,200	$	8,672,000
				Senior unsecured notes		1,350,769		1,413,000		1,358,008		1,468,000
				Revolving credit facility debt		83,982		83,982		1,170,000		1,170,000
					$	10,001,333	$	10,134,982	$	11,172,208	$	11,310,000
Non Financial Assets Measured At Fair Value On Nonrecurring Basis [Table Text Block]	'
					As of December 31, 2012
		(Amounts in thousands)			Total		Level 1		Level 2		Level 3
			Investment in Toys "R" Us		$	478,041	$	-	$	-	$	478,041
			Real estate assets			189,529		-		-		189,529
			Condominium units (included in other assets)			52,142		-		-		52,142
				Total assets	$	719,712	$	-	$	-	$	719,712
Real Estate Funds [Member]	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	'
								Weighted Average
								(based on fair
		Unobservable Quantitative Input				Range		value of investments)
			Discount rates			12.0% to 17.5%		13.90%
			Terminal capitalization rates			5.3% to 6.0%		5.70%
Summary of Changes in Level 3 Plan Assets [Table Text Block]	'
					Real Estate Fund Investments				Real Estate Fund Investments
					For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		(Amounts in thousands)				2013		2012	2013		2012
		Beginning balance			$	622,124	$	388,455	$	600,786	$	346,650
		Purchases				7,406		88,429		38,299		163,021
		Sales/Returns				-14,184		-		-70,848		-61,052
		Net realized gain				8,184		-		8,184		-
		Net unrealized gains				12,367		5,558		59,476		33,537
		Other, net				93		-		93		286
		Ending balance			$	635,990	$	482,442	$	635,990	$	482,442
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				Deferred Compensation Plan Assets
					For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		(Amounts in thousands)				2013		2012	2013		2012
		Beginning balance			$	66,502	$	58,313	$	62,631	$	56,221
		Purchases				880		1,650		4,027		5,416
		Sales				-873		-276		-5,318		-4,287
		Realized and unrealized (loss) gain				-42		1,080		4,094		3,349
		Other, net				58		-		1,091		68
		Ending balance			$	66,525	$	60,767	$	66,525	$	60,767

Fee_and_Other_Income_Tables

Fee and Other Income (Tables)	9 Months Ended
	Sep. 30, 2013
Fee And Other Income Tables [Abstract]	'
Fee and Other Income (Table)	'
				For the Three Months				For the Nine Months
		(Amounts in thousands)		Ended September 30,				Ended September 30,
				2013		2012		2013		2012
		BMS cleaning fees		$	15,898	$	16,945	$	49,071	$	49,437
		Signage revenue			8,738		4,783		23,566		14,252
		Management and leasing fees			7,982		7,234		19,675		16,534
		Lease termination fees (1)			20,432		282		87,587		1,172
		Other income			8,108		10,381		26,431		24,494
				$	61,158	$	39,625	$	206,330	$	105,889
		-1	The three months ended September 30, 2013 includes a $19,500 termination fee from a tenant at 1290 Avenue of the Americas, of which our 70% share, net of a $1,529 write-off of the straight lining of rents, was $12,121, and the nine months ended September 30, 2013 also includes $59,599 of income pursuant to a settlement agreement with Stop & Shop, which terminates our right to receive $6,000 of additional annual rent under a 1992 agreement, for a period potentially through 2031.

Interest_and_Other_Investment_1

Interest and Other Investment Income (Loss), Net (Tables)	9 Months Ended
	Sep. 30, 2013
Interest And Other Investment Loss Income Net Tables [Abstract]	'
Schedule Of Interest And Other Investment Income Net [Text Block]	'
				For the Three Months				For the Nine Months
	(Amounts in thousands)			Ended September 30,				Ended September 30,
				2013		2012		2013		2012
	(Loss) income from the mark-to-market of J.C. Penney derivative
		position		$	-20,012	$	4,344	$	-33,487	$	-53,343
	Interest on mezzanine loans receivable				4,766		2,852		14,783		8,867
	Dividends and interest on marketable securities				2,804		-		8,344		11,093
	Mark-to-market of investments in our deferred compensation plan (1)				269		1,116		6,207		5,267
	Non-cash impairment loss on J.C. Penney common shares				-		-		-39,487		-
	Income from prepayment penalties in connection with the
		repayment of a mezzanine loan			-		-		5,267		-
	Other, net				1,898		2,211		5,440		5,132
				$	-10,275	$	10,523	$	-32,933	$	-22,984
	-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)	9 Months Ended
	Sep. 30, 2013
Interest Expense Debt [Abstract]	'
Interest And Debt Expense [Table Text Block]	'
			For the Three Months				For the Nine Months
		(Amounts in thousands)	Ended September 30,				Ended September 30,
			2013		2012		2013		2012
		Interest expense	$	125,422	$	121,230	$	375,963	$	364,223
		Amortization of deferred financing costs		4,980		5,623		15,189		16,918
		Capitalized interest		-10,532		-7,523		-28,024		-7,884
			$	119,870	$	119,330	$	363,128	$	373,257

Income_Per_Class_A_Unit_Tables

Income Per Class A Unit (Tables)	9 Months Ended
	Sep. 30, 2013
Income Per Class A Unit [Abstract]	'
Schedule Of Earnings Per Class A Unit Basic And Diluted [Table Text Block]	'
				For the Three Months				For the Nine Months
	(Amounts in thousands, except per unit amounts)			Ended September 30,				Ended September 30,
				2013		2012		2013		2012
	Numerator:
		Income from continuing operations, net of income attributable
			to noncontrolling interests in consolidated subsidiaries	$	92,627	$	99,007	$	266,235	$	324,231
		Income from discontinued operations, net of income attributable
			to noncontrolling interests in consolidated subsidiaries		15,791		158,539		287,215		247,489
		Net income attributable to Vornado Realty L.P.			108,418		257,546		553,450		571,720
		Preferred unit distributions			-20,381		-22,016		-63,585		-65,337
		Preferred unit redemptions			-		11,700		-1,130		11,700
		Net income attributable to Class A unitholders			88,037		247,230		488,735		518,083
		Earnings allocated to unvested participating securities			-699		-1,008		-2,203		-2,302
		Numerator for basic income per Class A unit			87,338		246,222		486,532		515,781
		Impact of assumed conversions:
			Convertible preferred unit distributions		-		28		82		85
		Numerator for diluted income per Class A unit		$	87,338	$	246,250	$	486,614	$	515,866
	Denominator:
		Denominator for basic income per Class A unit – weighted
			average units		197,599		197,155		197,510		197,050
		Effect of dilutive securities(1):
			Vornado stock options and restricted unit awards		1,118		1,046		1,049		1,028
			Convertible preferred units		-		50		48		50
		Denominator for diluted income per Class A unit – weighted average
			units and assumed conversions		198,717		198,251		198,607		198,128
	INCOME PER CLASS A UNIT – BASIC:
		Income from continuing operations, net		$	0.36	$	0.45	$	1.01	$	1.36
		Income from discontinued operations, net			0.08		0.8		1.45		1.26
		Net income per Class A unit		$	0.44	$	1.25	$	2.46	$	2.62
	INCOME PER CLASS A UNIT – DILUTED:
		Income from continuing operations, net		$	0.36	$	0.44	$	1	$	1.35
		Income from discontinued operations, net			0.08		0.8		1.45		1.25
		Net income per Class A unit		$	0.44	$	1.24	$	2.45	$	2.6
	-1		The effect of dilutive securities in the three months ended September 30, 2013 and 2012 excludes an aggregate of 1,009 and 1,056 weighted average Class A unit equivalents, respectively, and 962 and 3,320 weighted average Class A unit equivalents in the nine months ended September 30, 2013 and 2012, respectively, as their effect was anti-dilutive.

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Schedule of Segment Information	'
	(Amounts in thousands)			For the Three Months Ended September 30, 2013
													Retail
					Total		New York			Washington, DC			Properties			Toys			Other
	Property rentals				$	505,062	$	277,855		$	113,737		$	63,361		$	-		$	50,109
	Straight-line rent adjustments					15,809		9,430			234			1,491			-			4,654
	Amortization of acquired below-market
		leases, net				11,820		7,151			521			2,894			-			1,254
	Total rentals					532,691		294,436			114,492			67,746			-			56,017
	Tenant expense reimbursements					84,638		47,142			10,462			21,670			-			5,364
	Cleveland Medical Mart development project					4,893		-			-			-			-			4,893
	Fee and other income:
		BMS cleaning fees				15,898		21,191			-			-			-			-5,293
		Signage revenue				8,738		8,738			-			-			-			-
		Management and leasing fees				7,982		2,615			5,263			371			-			-267
		Lease termination fees				20,432		19,496			867			-			-			69
		Other income				8,108		581			6,520			656			-			351
	Total revenues					683,380		394,199			137,604			90,443			-			61,134
	Operating expenses					264,422		160,465			49,646			31,628			-			22,683
	Depreciation and amortization					124,079		58,058			31,109			16,455			-			18,457
	General and administrative					48,250		7,849			6,857			4,240			-			29,304
	Cleveland Medical Mart development project					3,239		-			-			-			-			3,239
	Acquisition related costs					2,818		-			-			-			-			2,818
	Total expenses					442,808		226,372			87,612			52,323			-			76,501
	Operating income (loss)					240,572		167,827			49,992			38,120			-			-15,367
	(Loss) applicable to Toys					-34,209		-			-			-			-34,209			-
	Income (loss) from partially owned entities					1,453		4,189			-2,003			188			-			-921
	Income from Real Estate Fund					22,913		-			-			-			-			22,913
	Interest and other investment
		(loss) income, net				-10,275		1,468			17			1			-			-11,761
	Interest and debt expense					-119,870		-42,538			-27,246			-10,839			-			-39,247
	Net gain on disposition of wholly owned and
		partially owned assets				15,138		-			-			1,377			-			13,761
	Income (loss) before income taxes					115,722		130,946			20,760			28,847			-34,209			-30,622
	Income tax expense					-2,222		-65			-766			-731			-			-660
	Income (loss) from continuing operations					113,500		130,881			19,994			28,116			-34,209			-31,282
	Income (loss) from discontinued operations					18,751		-			-			19,012			-			-261
	Net income (loss)					132,251		130,881			19,994			47,128			-34,209			-31,543
	Less net income attributable to
		noncontrolling interests in
		consolidated subsidiaries				-23,833		-6,556			-			-2,970			-			-14,307
	Net income (loss) attributable to
		Vornado Realty L.P.				108,418		124,325			19,994			44,158			-34,209			-45,850
	Interest and debt expense(2)					183,116		59,344			30,717			12,119			38,435			42,501
	Depreciation and amortization(2)					172,756		67,294			35,403			17,573			32,176			20,310
	Income tax (benefit) expense (2)					-20,292		67			828			731			-22,690			772
	EBITDA(1)				$	443,998	$	251,030	(3)	$	86,942	(4)	$	74,581	(5)	$	13,712		$	17,733	(6)
	See notes on page 38.
	(Amounts in thousands)			For the Three Months Ended September 30, 2012
													Retail
					Total		New York			Washington, DC			Properties			Toys			Other
	Property rentals				$	486,914	$	255,703		$	115,641		$	63,408		$	-		$	52,162
	Straight-line rent adjustments					11,391		8,140			1,267			1,873			-			111
	Amortization of acquired below-market
		leases, net				13,256		8,458			506			2,882			-			1,410
	Total rentals					511,561		272,301			117,414			68,163			-			53,683
	Tenant expense reimbursements					79,215		45,164			9,601			19,787			-			4,663
	Cleveland Medical Mart development project					72,651		-			-			-			-			72,651
	Fee and other income:
		BMS cleaning fees				16,945		23,918			-			-			-			-6,973
		Signage revenue				4,783		4,783			-			-			-			-
		Management and leasing fees				7,234		1,816			4,615			736			-			67
		Lease termination fees				282		78			128			73			-			3
		Other income				10,381		1,116			8,288			569			-			408
Total revenues					703,052		349,176			140,046			89,328			-			124,502
Operating expenses					261,512		159,048			50,305			30,726			-			21,433
Depreciation and amortization					122,241		57,967			29,825			16,359			-			18,090
General and administrative					48,456		6,739			6,668			6,103			-			28,946
Cleveland Medical Mart development project					70,431		-			-			-			-			70,431
Acquisition related costs					1,070		-			-			-			-			1,070
Total expenses					503,710		223,754			86,798			53,188			-			139,970
Operating income (loss)					199,342		125,422			53,248			36,140			-			-15,468
(Loss) applicable to Toys					-8,585		-			-			-			-8,585			-
Income (loss) from partially owned entities					21,268		9,309			-2,182			342			-			13,799
Income from Real Estate Fund					5,509		-			-			-			-			5,509
Interest and other investment
	income, net				10,523		1,057			24			4			-			9,438
Interest and debt expense					-119,330		-36,817			-28,311			-13,292			-			-40,910
Income (loss) before income taxes					108,727		98,971			22,779			23,194			-8,585			-27,632
Income tax (expense) benefit					-3,015		-815			25			-			-			-2,225
Income (loss) from continuing operations					105,712		98,156			22,804			23,194			-8,585			-29,857
Income from discontinued operations					158,444		-			126,437			11,370			-			20,637
Net income (loss)					264,156		98,156			149,241			34,564			-8,585			-9,220
Less net (income) loss attributable to
	noncontrolling interests in
	consolidated subsidiaries				-6,610		-2,092			-			97			-			-4,615
Net income (loss) attributable to
	Vornado Realty L.P.				257,546		96,064			149,241			34,661			-8,585			-13,835
Interest and debt expense(2)					183,241		46,823			33,280			17,499			34,526			51,113
Depreciation and amortization(2)					177,593		62,905			35,071			21,345			33,160			25,112
Income tax expense (benefit)(2)					3,850		871			-25			-			-11,118			14,122
EBITDA(1)				$	622,230	$	206,663	(3)	$	217,567	(4)	$	73,505	(5)	$	47,983		$	76,512	(6)
See notes on page 38.
(Amounts in thousands)			For the Nine Months Ended September 30, 2013
												Retail
				Total		New York			Washington, DC			Properties			Toys			Other
Property rentals				$	1,521,127	$	839,349		$	338,742		$	189,964		$	-		$	153,072
Straight-line rent adjustments					47,989		27,289			4,242			3,741			-			12,717
Amortization of acquired below-market
	leases, net				40,326		26,184			1,543			8,669			-			3,930
Total rentals					1,609,442		892,822			344,527			202,374			-			169,719
Tenant expense reimbursements					236,580		128,598			31,264			63,601			-			13,117
Cleveland Medical Mart development project					34,026		-			-			-			-			34,026
Fee and other income:
	BMS cleaning fees				49,071		63,192			-			-			-			-14,121
	Signage revenue				23,566		23,566			-			-			-			-
	Management and leasing fees				19,675		7,533			11,529			1,170			-			-557
	Lease termination fees				87,587		24,986			1,417			59,797			-			1,387
	Other income				26,431		4,550			17,915			1,448			-			2,518
Total revenues					2,086,378		1,145,247			406,652			328,390			-			206,089
Operating expenses					784,031		478,318			145,258			98,374			-			62,081
Depreciation and amortization					400,952		203,679			92,678			47,935			-			56,660
General and administrative					157,155		25,552			20,655			14,824			-			96,124
Cleveland Medical Mart development project					29,764		-			-			-			-			29,764
Acquisition related costs					6,769		-			-			-			-			6,769
Total expenses					1,378,671		707,549			258,591			161,133			-			251,398
Operating income (loss)					707,707		437,698			148,061			167,257			-			-45,309
(Loss) applicable to Toys					-69,311		-			-			-			-69,311			-
Income (loss) from partially owned entities					23,691		14,020			-6,545			1,512			-			14,704
Income from Real Estate Fund					73,947		-			-			-			-			73,947
Interest and other investment (loss)
	income, net				-32,933		4,076			99			5			-			-37,113
Interest and debt expense					-363,128		-125,991			-83,350			-34,523			-			-119,264
Net (loss) gain on disposition of wholly
	owned and partially owned assets				-20,581		-			-			1,377			-			-21,958
Income (loss) before income taxes					319,392		329,803			58,265			135,628			-69,311			-134,993
Income tax expense					-6,172		-1,298			-1,949			-1,480			-			-1,445
Income (loss) from continuing operations					313,220		328,505			56,316			134,148			-69,311			-136,438
Income from discontinued operations					290,279		-			-			290,267			-			12
Net income (loss)					603,499		328,505			56,316			424,415			-69,311			-136,426
Less net income attributable to
	noncontrolling interests in
	consolidated subsidiaries				-50,049		-9,518			-			-3,079			-			-37,452
Net income (loss) attributable to
	Vornado Realty L.P.				553,450		318,987			56,316			421,336			-69,311			-173,878
Interest and debt expense(2)					551,357		163,579			93,715			40,057			119,347			134,659
Depreciation and amortization(2)					549,072		220,280			105,799			52,440			103,732			66,821
Income tax expense(2)					18,101		1,444			2,134			1,480			10,959			2,084
EBITDA(1)				$	1,671,980	$	704,290	(3)	$	257,964	(4)	$	515,313	(5)	$	164,727		$	29,686	(6)
See notes on page 38.
(Amounts in thousands)				For the Nine Months Ended September 30, 2012
												Retail
				Total		New York			Washington, DC			Properties			Toys			Other
Property rentals				$	1,443,478	$	735,587		$	356,459		$	190,671		$	-		$	160,761
Straight-line rent adjustments					53,169		42,334			4,382			5,265			-			1,188
Amortization of acquired below-market
	leases, net				39,569		23,776			1,537			9,989			-			4,267
Total rentals					1,536,216		801,697			362,378			205,925			-			166,216
Tenant expense reimbursements					220,679		118,861			30,471			61,307			-			10,040
Cleveland Medical Mart development project					184,014		-			-			-			-			184,014
Fee and other income:
	BMS cleaning fees				49,437		70,476			-			-			-			-21,039
	Signage revenue				14,252		14,252			-			-			-			-
	Management and leasing fees				16,534		4,037			9,782			2,640			-			75
	Lease termination fees				1,172		334			256			74			-			508
	Other income				24,494		3,449			18,846			1,232			-			967
Total revenues					2,046,798		1,013,106			421,733			271,178			-			340,781
Operating expenses					749,213		447,910			143,923			97,154			-			60,226
Depreciation and amortization					381,270		168,391			107,395			51,877			-			53,607
General and administrative					150,578		21,980			19,849			18,803			-			89,946
Cleveland Medical Mart development project					177,127		-			-			-			-			177,127
Acquisition related costs					4,314		-			-			-			-			4,314
Total expenses					1,462,502		638,281			271,167			167,834			-			385,220
Operating income (loss)					584,296		374,825			150,566			103,344			-			-44,439
Income applicable to Toys					88,696		-			-			-			88,696			-
Income (loss) from partially owned entities					53,491		20,345			-4,571			1,040			-			36,677
Income from Real Estate Fund					37,572		-			-			-			-			37,572
Interest and other investment (loss)
	income, net				-22,984		3,166			97			24			-			-26,271
Interest and debt expense					-373,257		-109,365			-85,408			-45,362			-			-133,122
Net gain on disposition of wholly owned and
	partially owned assets				4,856		-			-			-			-			4,856
Income (loss) before income taxes					372,670		288,971			60,684			59,046			88,696			-124,727
Income tax expense					-17,319		-2,480			-1,277			-			-			-13,562
Income (loss) from continuing operations					355,351		286,491			59,407			59,046			88,696			-138,289
Income (loss) from discontinued operations					247,297		-640			130,979			37,456			-			79,502
Net income (loss)					602,648		285,851			190,386			96,502			88,696			-58,787
Less net (income) loss attributable to
	noncontrolling interests in
	consolidated subsidiaries				-30,928		-7,266			-			308			-			-23,970
Net income (loss) attributable to
	Vornado Realty L.P.				571,720		278,585			190,386			96,810			88,696			-82,757
Interest and debt expense(2)					567,265		140,294			99,486			58,039			103,388			166,058
Depreciation and amortization(2)					552,794		188,480			122,987			65,751			100,371			75,205
Income tax expense(2)					50,076		2,677			1,532			-			17,982			27,885
EBITDA(1)				$	1,741,855	$	610,036	(3)	$	414,391	(4)	$	220,600	(5)	$	310,437		$	186,391	(6)
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 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 (benefit) expense 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						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Office						$	172,367		$	139,894		$	476,849		$	418,414
	Retail							59,782			46,165			177,394			135,399
	Alexander's (decrease due to sale of Kings Plaza
		in November 2012)						10,387			13,080			31,141			39,477
	Hotel Pennsylvania							8,494			7,524			18,906			16,746
		Total New York					$	251,030		$	206,663		$	704,290		$	610,036
-4	The elements of "Washington, DC" EBITDA are summarized below.
							For the Three Months						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Office, excluding the Skyline Properties (a)						$	69,220		$	197,009		$	202,463		$	350,296
	Skyline properties							6,841			9,936			22,546			32,127
		Total Office						76,061			206,945			225,009			382,423
	Residential							10,881			10,622			32,955			31,968
		Total Washington, DC					$	86,942		$	217,567		$	257,964		$	414,391
	(a)		The three and nine months ended September 30, 2012, includes a $126,621 net gain on sale of real estate.
-5	The elements of "Retail Properties" EBITDA are summarized below.
							For the Three Months						For the Nine Months
							Ended September 30,						Ended September 30,
	(Amounts in thousands)						2013			2012			2013			2012
	Strip shopping centers(a)						$	59,175		$	49,378		$	264,065		$	148,554
	Regional malls(b)							15,406			24,127			251,248			72,046
		Total Retail properties					$	74,581		$	73,505		$	515,313		$	220,600
	(a)		The three and nine months ended September 30, 2013, includes $16,087 and $81,806, respectively, of net gains on sale of real estate and the nine months ended also includes $59,599 of income pursuant to a settlement agreement with Stop & Shop.
	(b)		The nine months ended September 30, 2013, includes a $202,275 net gain on sale of the Green Acres Mall.
Details of Other EBITDA (Table)	'
		Notes to preceding tabular information - continued:
	-6	The elements of "other" EBITDA are summarized below.
								For the Three Months						For the Nine Months
								Ended September 30,						Ended September 30,
		(Amounts in thousands)						2013			2012			2013			2012
		Our share of Real Estate Fund:
			Income before net realized/unrealized gains					$	1,997		$	1,874		$	1,746		$	4,162
			Net unrealized gains						3,092			1,389			14,869			8,384
			Net realized gain						2,046			-			2,046			-
			Carried interest						356			-2,541			15,965			-
		Total							7,491			722			34,626			12,546
		Merchandise Mart Building, 7 West 34th Street and trade shows							15,006			13,869			52,167			46,518
		555 California Street							10,720			10,714			32,371			31,406
		India real estate ventures							695			1,841			4,708			1,718
		LNR(a)							-			18,773			20,443			46,006
		Lexington(b)							-			7,859			6,931			24,780
		Other investments							5,330			9,280			14,207			30,226
									39,242			63,058			165,453			193,200
		Corporate general and administrative expenses(c)							-23,467			-22,811			-71,054			-66,940
		Investment income and other, net(c)							11,108			6,854			39,153			30,900
		Net gain on sale of marketable securities							31,741			-			31,741			3,582
		(Loss) income from the mark-to-market of J.C. Penney
			derivative position						-20,012			4,344			-33,487			-53,343
		Loss on sale of J.C. Penney common shares							-18,114			-			-54,914			-
		Non-cash impairment loss on J.C. Penney common shares							-			-			-39,487			-
		Acquisition related costs							-2,818			-1,070			-6,769			-4,314
		Net gain on sale of residential condominiums							134			-			1,139			1,274
		Merchandise Mart discontinued operations (including
			net gains on sale of assets)						-81			32,087			2,065			88,488
		Verde Realty impairment loss							-			-4,936			-			-4,936
		Severance costs (primarily reduction in force at
			the Merchandise Mart)						-			-1,014			-4,154			-1,520
								$	17,733		$	76,512		$	29,686		$	186,391
		(a)		On April 22, 2013, LNR was sold (see page 14 for details).
		(b)		In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale (see page 12 for details).
		(c)		The amounts in these captions (for this table only) exclude income(expense) from the mark-to-market of our deferred compensation plan.

Organization_Details

Organization (Details)	9 Months Ended
	Sep. 30, 2013
Organization And Business Details [Abstract]	'
Common limited partnership interest in the Operating Partnership	94.00%

Vornado_Capital_Partners_Real_2

Vornado Capital Partners Real Estate Fund (the "Fund") (Narratives) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013
			Real Estate Funds [Member]	Vornado Realty Trust [Member]
			Investments
Investment Holdings [Line Items]	'	'	'	'
Capital Commitments For Real Estate Fund	'	'	$800,000,000	$200,000,000
Term of the Fund, years	'	'	'8 years	'
Investment period for commitments of the Fund, years	'	'	'3 years	'
Number Of Investments Made By Fund	'	'	9	'
Aggregate Fair Value Real Estate Fund investments	635,990,000	600,786,000	635,990,000	'
Excess of fair value over cost	'	'	127,118,000	'
Unfunded Commitments Of Fund	'	'	$239,186,000	$59,796,000

Vornado_Capital_Partners_Real_3

Vornado Capital Partners Real Estate Fund (the "Fund") (Details 1) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Details Of Income From Real Estate Funds [Abstract]	'	'	'	'
Income from Real Estate Fund	$22,913	$5,509	$73,947	$37,572
Less income attributable to noncontrolling interests	-23,833	-6,610	-50,049	-30,928
Income from Real Estate Fund attributable to Vornado	7,491	722	34,626	12,546
Fee And Other Income	61,158	39,625	206,330	105,889
Real Estate Funds [Member]	'	'	'	'
Details Of Income From Real Estate Funds [Abstract]	'	'	'	'
Less income attributable to noncontrolling interests	-15,422	-4,787	-39,321	-25,026
Fee And Other Income	770	954	2,446	2,374
Operating Income [Member]	'	'	'	'
Details Of Income From Real Estate Funds [Abstract]	'	'	'	'
Income from Real Estate Fund	2,362	-49	6,287	4,035
Realized Gain [Member]	'	'	'	'
Details Of Income From Real Estate Funds [Abstract]	'	'	'	'
Income from Real Estate Fund	8,184	0	8,184	0
Unrealized Gain From Mark To Market [Member]	'	'	'	'
Details Of Income From Real Estate Funds [Abstract]	'	'	'	'
Income from Real Estate Fund	$12,367	$5,558	$59,476	$33,537

Mortgage_and_Mezzanine_Loans_R1

Mortgage and Mezzanine Loans Receivable (Narratives) (Details) (USD $)	3 Months Ended		9 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Mar. 27, 2013	Apr. 17, 2013
						NY 701 Seventh Avenue [Member]	Other Mezzanine Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'	'	'
Mortgage and mezzanine loans receivable	$176,388	'	$176,388	'	$225,359	'	$50,091
Mezzanine Loan Receivable Weighted Average Interest Rate	10.80%	'	10.80%	'	10.30%	'	'
Mezzanine Loans Receiveable - Maturity Start Date	'August 2014	'	'August 2014	'	'	'	'
Mezzanine Loans Receiveable - Maturity End Date	'May 2016	'	'May 2016	'	'	'	'
Mezzanine Loan Receivable - Maturity Date	'	'	'	'	'	'	'August 2015
Proceeds from repayments of mortgage and mezzanine loans receivable and other	'	'	49,452	2,379	'	'	'
Proceeds From Collection Of Notes Receivable Including Prepayment Penalty	'	'	'	'	'	'	55,358
Interest and other investment (loss) income, net	-10,275	10,523	-32,933	-22,984	'	'	5,267
Proceeds from the sale of participation right in mortgage and mezzanine loan receivable	'	'	'	'	'	59,375	'
Other liabilities	$452,456	'	$452,456	'	$400,934	$59,375	'
Percentage Of Participation In Mortgage Interest Sold	'	'	'	'	'	25.00%	'

Marketable_Securities_and_Deri2

Marketable Securities and Derivative Instruments: Derivative Instruments (Narratives) (Details) (USD $)

9 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 19, 2013

Mar. 04, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 19, 2013

Dec. 31, 2012

Other Investments [Member]

JC Penney [Member]

JC Penney [Member]

JC Penney [Member]

JC Penney [Member]

Lexington Realty Trust [Member]

Lexington Realty Trust [Member]

Shares Owned [Member]

Shares Owned [Member]

Forward Contracts [Member]

Common Shares [Member]

Common Shares [Member]

Minimum [Member]

Maximum [Member]

JC Penney [Member]

JC Penney [Member]

JC Penney [Member]

JC Penney [Member]

JC Penney [Member]

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership Percentage

'

'

'

'

'

'

'

8.80%

17.20%

'

'

'

'

'

Number of shares owned

'

'

'

'

'

'

'

'

'

8,584,010

23,400,000

4,815,990

'

18,584,010

Investment Owned, at Cost

'

'

'

'

'

'

'

'

'

'

$366,291

$141,309

'

'

Strike price of common shares held under forward contract (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

$29.34

'

'

Sale of Stock, Number of Shares

'

'

'

13,400,000

10,000,000

'

'

'

'

'

'

'

'

'

Sale price, per share (in dollars per share)

'

'

'

$13

$16.03

'

'

'

'

'

'

'

'

'

Proceeds From Sale Of JC Penney Common Shares

'

'

'

174,200

160,300

'

'

'

'

'

'

'

'

'

Net loss on sale of common shares in J.C Penney

'

'

31,741

-18,114

-36,800

'

'

'

'

'

'

'

'

'

Closing share price (in dollars per share)

'

'

'

'

'

$15.11

'

'

'

'

$19.71

'

'

'

Non-cash impairment loss on J.C. Penney common shares

39,487

0

'

'

'

39,487

'

'

'

'

'

'

'

'

Receipt of common shares by settling forward contract

'

'

'

'

'

'

'

'

'

'

'

'

4,815,990

'

Unrealized Gain Loss On Derivatives

-33,487

-53,343

'

'

'

'

'

'

'

'

'

'

-20,012

'

Proceeds from sales of marketable securities

378,676

58,460

44,176

'

'

'

'

'

'

'

'

'

'

'

Net economic gain or (loss) on investment in marketable securities

'

'

'

'

'

'

($256,156)

'

'

'

'

'

'

'

Marketable_Securities_and_Deri3

Marketable Securities and Derivative Instruments: Marketable Securities (Details 1) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Marketable equity securities - available for sale	$210,554	$398,188
Available-for-sale Equity Securities, Amortized Cost Basis	72,640	378,756
Available-for-sale Securities, Gross Unrealized Gain (Loss)	137,914	19,432
Lexington Realty Trust [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Marketable equity securities - available for sale	207,407	0
Available-for-sale Equity Securities, Amortized Cost Basis	72,549	0
Available-for-sale Securities, Gross Unrealized Gain (Loss)	134,858	0
JC Penney [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Marketable equity securities - available for sale	0	366,291
Available-for-sale Equity Securities, Amortized Cost Basis	0	366,291
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	0
Other Equity Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Marketable equity securities - available for sale	3,147	31,897
Available-for-sale Equity Securities, Amortized Cost Basis	91	12,465
Available-for-sale Securities, Gross Unrealized Gain (Loss)	$3,056	$19,432

Investments_in_Partially_Owned2

Investments in Partially Owned Entities (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Aug. 03, 2013

Dec. 31, 2012

Sep. 30, 2012

Jul. 28, 2012

Sep. 30, 2013

Aug. 03, 2013

Sep. 30, 2012

Jul. 28, 2012

Oct. 27, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Apr. 22, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Apr. 24, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Non-controlling Interests in Consolidated Subsidiaries

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Lexington Realty Trust [Member]

Lexington Realty Trust [Member]

Lexington Realty Trust [Member]

Lexington Realty Trust [Member]

Lexington Realty Trust [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Equity in net income [Member]

Equity in net income [Member]

Equity in net income [Member]

Equity in net income [Member]

Income Tax Benefit [Member]

Income Tax Benefit [Member]

Income Tax Benefit [Member]

Income Tax Benefit [Member]

Equity In Net Income After Income Taxes [Member]

Equity In Net Income After Income Taxes [Member]

Equity In Net Income After Income Taxes [Member]

Equity In Net Income After Income Taxes [Member]

Impairment Loss [Member]

Impairment Loss [Member]

Impairment Loss [Member]

Impairment Loss [Member]

Impairment Loss [Member]

Management Fees [Member]

Management Fees [Member]

Management Fees [Member]

Management Fees [Member]

Equity In Net Income After Income Taxes [Member]

Equity In Net Income After Income Taxes [Member]

Equity In Net Income After Income Taxes [Member]

Equity In Net Income After Income Taxes [Member]

Management Leasing And Development Fees [Member]

Management Leasing And Development Fees [Member]

Management Leasing And Development Fees [Member]

Management Leasing And Development Fees [Member]

Minimum [Member]

Maximum [Member]

Tcg Urban Infrastructure Holdings [Member]

Park Avenue 280 [Member]

Park Avenue 280 [Member]

Park Avenue 280 [Member]

Park Avenue 280 [Member]

Park Avenue 280 [Member]

Madison Avenue 650 [Member]

Madison Avenue 650 [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

West 57th Street [Member]

West 57th Street [Member]

West 57th Street [Member]

West 57th Street [Member]

West 57th Street [Member]

One Park Avenue [Member]

One Park Avenue [Member]

One Park Avenue [Member]

One Park Avenue [Member]

One Park Avenue [Member]

Fifth Avenue 666 [Member]

Fifth Avenue 666 [Member]

Fifth Avenue 666 [Member]

Fifth Avenue 666 [Member]

Fifth Avenue 666 [Member]

Madison Avenue 330 [Member]

Madison Avenue 330 [Member]

Madison Avenue 330 [Member]

Madison Avenue 330 [Member]

Madison Avenue 330 [Member]

Washington DC Office Warner Building [Member]

Washington DC Office Warner Building [Member]

Washington DC Office Warner Building [Member]

Washington DC Office Warner Building [Member]

Washington DC Office Warner Building [Member]

Fairfax Square [Member]

Fairfax Square [Member]

Fairfax Square [Member]

Fairfax Square [Member]

Fairfax Square [Member]

Other partially owned office buildings [Member]

Other partially owned office buildings [Member]

Other partially owned office buildings [Member]

Other partially owned office buildings [Member]

Other partially owned office buildings [Member]

Washington DC Office 1101 17th Street [Member]

Washington DC Office 1101 17th Street [Member]

Washington DC Office 1101 17th Street [Member]

Washington DC Office 1101 17th Street [Member]

Downtown Crossing Boston [Member]

Downtown Crossing Boston [Member]

Downtown Crossing Boston [Member]

Downtown Crossing Boston [Member]

Downtown Crossing Boston [Member]

Downtown Crossing Boston [Member]

Monmouth Mall [Member]

Monmouth Mall [Member]

Monmouth Mall [Member]

Monmouth Mall [Member]

Monmouth Mall [Member]

Other equity investments [Member]

Other equity investments [Member]

Other equity investments [Member]

Other equity investments [Member]

Other equity investments [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Minimum [Member]

Maximum [Member]

Non-controlling Interests in Consolidated Subsidiaries

Equity Method Investments And Income From Equity Method Investments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

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'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity method ownership percentage

'

'

'

'

'

32.60%

'

'

'

'

32.60%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

32.40%

'

32.40%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26.20%

'

'

'

'

'

'

'

'

'

4.00%

36.50%

25.00%

'

'

'

'

49.50%

'

49.50%

'

'

20.10%

'

'

'

'

'

'

43.70%

50.40%

50.00%

'

50.00%

'

'

30.30%

'

30.30%

'

'

49.50%

'

49.50%

'

'

25.00%

'

25.00%

'

'

55.00%

'

55.00%

'

'

20.00%

'

20.00%

'

'

'

'

'

'

'

55.00%

'

55.00%

'

'

'

'

'

'

'

'

'

50.00%

'

50.00%

'

50.00%

'

'

'

'

'

'

'

50.10%

'

50.10%

'

'

'

Toys fourth quarter net income as a percentage of its fiscal year net income

'

'

'

'

'

'

'

'

'

'

80.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of invesements in Toys R Us

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$78,542,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-cash impairment charges

'

'

'

'

'

'

'

40,000,000

'

'

118,542,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Carrying amount of investments in partially owned entities

'

'

'

'

'

378,615,000

'

478,041,000

'

'

378,615,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

167,618,000

'

167,618,000

'

171,013,000

'

'

'

'

'

'

'

'

0

'

0

'

75,542,000

'

0

241,000,000

'

0

'

224,724,000

90,200,000

'

90,200,000

'

95,516,000

'

'

'

'

'

'

'

229,152,000

'

229,152,000

'

197,516,000

121,775,000

0

59,416,000

'

59,416,000

'

62,627,000

'

'

56,743,000

'

56,743,000

'

57,033,000

56,064,000

'

56,064,000

'

50,509,000

40,047,000

'

40,047,000

'

35,527,000

33,991,000

'

33,991,000

'

30,277,000

13,387,000

'

13,387,000

'

8,775,000

5,191,000

'

5,191,000

'

5,368,000

9,338,000

'

9,338,000

'

9,315,000

'

'

'

'

'

'

'

'

0

'

0

'

'

48,122,000

6,876,000

'

6,876,000

'

7,205,000

115,442,000

'

115,442,000

'

147,187,000

164,488,000

'

164,488,000

'

0

26,266,000

Proceeds from the sale of LNR

'

'

240,474,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

241,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condensed Financial Information For Equity Method Investments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assets

'

'

'

'

'

'

11,274,000,000

'

'

'

'

11,274,000,000

'

'

12,953,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,471,000,000

'

1,471,000,000

'

1,482,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liabilities

'

'

'

'

'

'

9,562,000,000

'

'

'

'

9,562,000,000

'

'

11,190,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,141,000,000

'

1,141,000,000

'

1,150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling interests

'

'

'

'

'

'

72,000,000

'

'

'

'

72,000,000

'

'

44,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity

'

'

'

'

'

'

1,640,000,000

'

'

'

'

1,640,000,000

'

'

1,719,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

330,000,000

'

330,000,000

'

332,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total revenue

'

'

'

'

'

'

2,377,000,000

'

'

2,552,000,000

'

10,555,000,000

'

11,089,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

49,000,000

146,000,000

143,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net (loss) income attributable to investee

'

'

'

'

'

'

-111,000,000

'

'

-34,000,000

'

11,000,000

'

249,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,000,000

19,000,000

41,000,000

57,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Financial Data For Equity Method Investments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership common shares, investee (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,654,068

'

1,654,068

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fees owed by Alexander's under management agreements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

44,032,000

'

44,032,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Closing share price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$286.12

'

$286.12

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment Market Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

473,262,000

'

473,262,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Excess of investee's fair value over carrying amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

305,644,000

'

305,644,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Excess of investee's carrying amount over equity in net assets

'

'

'

'

'

145,809,000

'

'

'

'

145,809,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

42,224,000

'

42,224,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sales Of Real Estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,053,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income Loss From Equity Method Investments

-32,756,000

12,683,000

-45,620,000

142,187,000

'

-34,209,000

'

'

-8,585,000

'

-69,311,000

'

88,696,000

'

'

-58,746,000

-22,074,000

14,737,000

99,649,000

22,690,000

11,118,000

-10,959,000

-17,982,000

-36,056,000

-10,956,000

3,778,000

81,667,000

0

0

-78,542,000

0

'

1,847,000

2,371,000

5,453,000

7,029,000

5,975,000

8,958,000

17,802,000

24,827,000

'

4,299,000

7,137,000

12,785,000

19,210,000

1,676,000

1,821,000

5,017,000

5,617,000

0

-323,000

-979,000

371,000

'

'

0

18,731,000

16,600,000

18,731,000

39,319,000

'

-1,449,000

82,000

-2,630,000

-4,526,000

'

'

'

'

38,000

-306,000

-1,586,000

-4,282,000

-1,890,000

-1,717,000

-6,480,000

-9,267,000

'

'

'

-707,000

-204,000

-2,158,000

99,000

'

'

'

47,000

167,000

415,000

732,000

'

680,000

256,000

1,054,000

890,000

'

1,858,000

1,744,000

5,776,000

5,244,000

'

1,225,000

1,224,000

3,714,000

2,036,000

'

-2,004,000

-2,839,000

-6,346,000

-7,438,000

'

-24,000

-33,000

-87,000

-85,000

'

477,000

505,000

1,530,000

1,587,000

'

376,000

591,000

996,000

1,920,000

-3,111,000

-3,743,000

-7,647,000

-2,218,000

0

-38,000

-2,358,000

-872,000

'

'

165,000

347,000

1,450,000

1,007,000

'

-1,195,000

-5,880,000

-3,540,000

-7,596,000

'

-2,081,000

1,828,000

-3,199,000

5,243,000

'

'

Acquisitions Of Equity Method Investments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain Loss On Disposal Of Discontinued Operations

$18,996,000

$131,088,000

$286,990,000

$203,801,000

$2,909,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments_in_Partially_Owned3

Investments in Partially Owned Entities (Details 1) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Jun. 07, 2013

Dec. 21, 2012

Dec. 31, 2012

Jun. 07, 2013

Jun. 07, 2013

Dec. 31, 2012

Dec. 21, 2012

Dec. 31, 2012

Dec. 21, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

In Thousands, unless otherwise specified

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Madison Avenue 650 [Member]

Madison Avenue 650 [Member]

Madison Avenue 650 [Member]

Residential

Vornado Realty Trust [Member]

Five year interest only loan bearing interest rate of 3.48%

Land [Member]

Land [Member]

Building Improvements [Member]

Building Improvements [Member]

Acquired above-market leases (included in identified intangible assets) [Member]

Acquired in-place leases (included in identified intangible assets) [Member]

Other Assets [Member]

Acquired below-market leases (included in deferred revenue) [Member]

Story

Office Space [Member]

Retails Space [Member]

sqft

sqft

sqft

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Variable Interest Entity Ownership Percentage

'

'

'

58.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Units in Real Estate Property

'

'

'

1,328

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase Price Allocation, Land

'

'

'

'

'

'

'

'

$309,848

'

'

'

'

'

'

'

'

'

Purchase Price Allocation, Buildings

'

'

'

'

'

'

'

'

'

'

527,578

'

'

'

'

'

'

'

Purchase Price Allocation, Assets Acquired

'

'

'

'

844,800

'

'

602,662

'

252,844

'

13,115

67,879

7,374

-99,074

'

'

'

Equity method ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20.10%

'

'

Number Of Story In Office Tower

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27

'

'

Square Footage Of Real Estate Property

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

594,000

523,000

71,000

Cost Of Acquired Entity Purchase Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,295,000

'

'

Debt Instruments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgages payable

8,566,582

8,644,200

323,000

'

'

'

550,000

'

'

'

'

'

'

'

'

800,000

'

'

Debt Term

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'7 years

'

'

Interest Rate, End of Period

'

'

'

'

'

'

3.48%

'

'

'

'

'

'

'

'

4.39%

'

'

Net proceeds after repaying the existing loan and closing costs

'

'

219,000

'

'

137,000

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment, Ownership Percentage Sold

'

'

8.65%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale of economic interest, value

'

'

$41,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vornado's economic interest in subsidiary after sale

'

'

50.10%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments_in_Partially_Owned4

Investments in Partially Owned Entities - Debt (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Toys R Us [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Alexanders Inc [Member]

Lexington Realty Trust [Member]

Lexington Realty Trust [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

LNR [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

Partially owned office buildings [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

India real estate ventures [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Other equity method investments [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

LNR mortgage notes payable [Member]

LNR mortgage notes payable [Member]

Liabilities Of Consolidated CMBS And CDO Trusts [Member]

Liabilities Of Consolidated CMBS And CDO Trusts [Member]

Fifth Avenue 666 [Member]

Fifth Avenue 666 [Member]

Madison Avenue 650 [Member]

Madison Avenue 650 [Member]

Park Avenue 280 [Member]

Park Avenue 280 [Member]

Washington DC Office Warner Building [Member]

Washington DC Office Warner Building [Member]

One Park Avenue [Member]

One Park Avenue [Member]

Madison Avenue 330 [Member]

Madison Avenue 330 [Member]

Fairfax Square [Member]

Fairfax Square [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

Rosslyn Plaza [Member]

West 57th Street [Member]

West 57th Street [Member]

Other Mortgage Notes Payable Collateralized By Real Estate [Member]

Other Mortgage Notes Payable Collateralized By Real Estate [Member]

Washington DC Office 1101 17th Street [Member]

Washington DC Office 1101 17th Street [Member]

Tcg Urban Infrastructure Holdings [Member]

Tcg Urban Infrastructure Holdings [Member]

Tcg Urban Infrastructure Holdings [Member]

Tcg Urban Infrastructure Holdings [Member]

Monmouth Mall [Member]

Monmouth Mall [Member]

Other Equity Method Investments Other [Member]

Other Equity Method Investments Other [Member]

Independence Plaza [Member]

Independence Plaza [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Schedule Of Long Term Debt Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity method ownership percentage

'

'

32.60%

'

'

'

32.40%

'

'

'

'

'

'

26.20%

'

'

'

'

'

'

'

49.50%

'

20.10%

'

49.50%

'

55.00%

'

30.30%

'

25.00%

'

20.00%

'

'

'

43.70%

50.40%

50.00%

'

'

'

55.00%

'

25.00%

'

'

'

'

'

50.00%

'

'

'

50.10%

'

Maturity, Range, Start

'

'

'

'

'2014

'

'

'

'2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2013

'

'

'

'

'

'

'

'

'

Maturity, Range, End

'

'

'

'

'

'2021

'

'

'

'2018

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2022

'

'

'

'

'

'

'

'

Debt Instrument Maturity Date (String)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'02/19

'

'10/20

'

'06/16

'

'05/16

'

'03/16

'

'06/15

'

'12/14

'

'03/16

'

'

'

'07/23

'

'

'

'01/15

'

'

'

'

'

'

'

'09/15

'

'

'

'06/18

'

Debt Instrument, Interest Rate at Period End

'

'

7.69%

'

'

'

3.84%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.76%

'

4.39%

'

6.64%

'

6.26%

'

5.00%

'

1.68%

'

7.00%

'

2.68%

'

'

'

3.50%

'

6.36%

'

1.43%

'

13.63%

'

'

'

'

'

5.44%

'

5.01%

'

3.48%

'

Equity Method Investment Debt Of Partially Owned Entities

'

'

$5,253,323

$5,683,733

'

'

$1,054,046

$1,065,916

'

'

$0

$1,994,179

$0

'

$97,521,521

$0

$309,787

$0

$97,211,734

$3,599,837

$2,731,893

$1,155,038

$1,109,700

$800,000

$0

$738,582

$738,228

$292,700

$292,700

$250,000

$250,000

$150,000

$150,000

$69,452

$70,127

$23,785

$0

'

'

$20,000

$20,434

$69,280

$69,704

$31,000

$31,000

$213,963

$236,579

'

'

$1,680,431

$1,150,543

$158,296

$159,896

$972,135

$990,647

$550,000

$0

Equity Method Investment Pro Rata Share Debt Of Partially Owned Entities

4,032,534

29,443,128

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment Prorata Share Debt Of Partially Owned Entities Excluding Our Pro Rata Share Of Lnr Liabilities Related To Cmbs And Cdo

'

$3,998,929

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments_in_Partially_Owned5

Investments in Partially Owned Entities (Parentheticals) (Details) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Apr. 24, 2013	Sep. 30, 2013
	Downtown Crossing [Member]	Toys R Us [Member]
Sale Of Interest	$45,000	'
Impairment loss	$2,335	'
Equity method ownership percentage	'	32.60%

Discontinued_Operations_Narrat

Discontinued Operations (Narratives) (Details) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended						9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Apr. 15, 2013	Jan. 24, 2013	Apr. 15, 2013	Sep. 20, 2013	Sep. 30, 2013	Sep. 20, 2013	Sep. 30, 2013
					Retail Properties Segment [Member]	Retail Properties Segment [Member]	Retail Properties Segment [Member]	Retail Properties Segment [Member]	Retail Properties Segment [Member]	Retail Properties Segment [Member]	Retail And Other Segment Properties [Member]
					Plant [Member]	Green Acres Mall [Member]	Gallery At Market Street [Member]	Tampa Florida [Member]	Tampa Florida [Member]	Tampa Florida [Member]	Properties
					Retail Segment Strip Shopping Centers [Member]	Retail Segment Regional Malls [Member]	Retail Segment Strip Shopping Centers [Member]	Retail Segment Strip Shopping Centers [Member]	Retail Segment Strip Shopping Centers [Member]	Retail Segment Strip Shopping Centers [Member]
									Vornado Realty Trust [Member]	Vornado Realty Trust [Member]
Disposal Group Including Discontinued Operation Additional Disclosures [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Gross proceeds from the sale of real estate	'	'	'	'	$203,000	$500,000	$60,000	$45,000	$33,750	'	'
Gain Loss On Disposal Of Discontinued Operations	18,996	131,088	286,990	203,801	32,169	202,275	33,058	'	'	8,728	7,851
Net proceeds from the sale of real estate	'	'	'	'	98,000	185,000	58,000	'	'	20,810	'
Cash proceeds from the sale of real estate	'	'	'	'	'	'	'	'	'	'	$82,300
Sale Of Ownership Interest Percent	'	'	'	'	'	'	'	'	75.00%	'	'
Number Of Real Estate Properties Sold	'	'	'	'	'	'	'	'	'	'	12

Discontinued_Operations_Detail

Discontinued Operations (Details 1) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract	'	'	'	'	'
Assets related to discontinued operations	$27,413	'	$27,413	'	$634,139
Liabilities related to discontinued operations	0	'	0	'	442,293
Discontinued Operation, Income (Loss) from Discontinued Operations Disclosure [Abstract]	'	'	'	'	'
Total revenues	2,963	35,576	35,193	144,274	'
Total expenses	2,488	27,877	27,177	106,924	'
Income from discontinued operations before gain on sale of real estate	475	7,699	8,016	37,350	'
Gain Loss On Disposal Of Discontinued Operations	18,996	131,088	286,990	203,801	'
Impairment loss	-720	0	-4,727	-13,511	'
Income from discontinued operations	18,751	158,444	290,279	247,297	'
Non-controlling Interests in Consolidated Subsidiaries	'	'	'	'	'
Discontinued Operation, Income (Loss) from Discontinued Operations Disclosure [Abstract]	'	'	'	'	'
Gain Loss On Disposal Of Discontinued Operations	'	'	2,909	'	'
Canadian Trade Shows [Member]	'	'	'	'	'
Discontinued Operation, Income (Loss) from Discontinued Operations Disclosure [Abstract]	'	'	'	'	'
Gain Loss On Disposal Of Discontinued Operations	0	19,657	0	19,657	'
Income Tax On Gain On Sale	'	11,448	'	11,448	'
Retail Properties Segment [Member]	'	'	'	'	'
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract	'	'	'	'	'
Assets related to discontinued operations	20,428	'	20,428	'	600,640
Liabilities related to discontinued operations	0	'	0	'	442,293
Discontinued Operation, Income (Loss) from Discontinued Operations Disclosure [Abstract]	'	'	'	'	'
Income from discontinued operations	19,012	11,370	290,267	37,456	'
Other Segment [Member]	'	'	'	'	'
Disposal Group Including Discontinued Operation Unclassified Balance Sheet Disclosures Abstract	'	'	'	'	'
Assets related to discontinued operations	6,985	'	6,985	'	33,499
Liabilities related to discontinued operations	0	'	0	'	0
Discontinued Operation, Income (Loss) from Discontinued Operations Disclosure [Abstract]	'	'	'	'	'
Income from discontinued operations	($261)	$20,637	$12	$79,502	'

Identified_Intangible_Assets_a2

Identified Intangible Assets and Intangible Liabilities (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

In Thousands, unless otherwise specified

Below Market Leases Net Of Above Market Leases [Member]

Below Market Leases Net Of Above Market Leases [Member]

Below Market Leases Net Of Above Market Leases [Member]

Below Market Leases Net Of Above Market Leases [Member]

Other Identified Intangible Assets [Member]

Other Identified Intangible Assets [Member]

Other Identified Intangible Assets [Member]

Other Identified Intangible Assets [Member]

Tenant Under Ground Leases [Member]

Tenant Under Ground Leases [Member]

Tenant Under Ground Leases [Member]

Tenant Under Ground Leases [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Identified intangible assets (included in other assets): Gross

$572,641

$752,922

'

'

'

'

'

'

'

'

'

'

'

'

Identified intangible assets, accumulated amortization

-297,391

-346,613

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Net, Total

275,250

406,309

'

'

'

'

'

'

'

'

'

'

'

'

Identified intangible liabilities (included in deferred credit): Gross

811,917

902,525

'

'

'

'

'

'

'

'

'

'

'

'

Identified intangible liabilities (included in deferred credit): Accumulated amortization

-372,329

-341,536

'

'

'

'

'

'

'

'

'

'

'

'

Identified intangible liabilities (included in deferred credit): Net

439,588

560,989

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of Intangible Assets

'

'

11,820

13,256

40,326

39,569

11,257

11,415

53,339

35,519

981

312

3,704

894

2014

'

'

41,069

'

41,069

'

26,708

'

26,708

'

3,921

'

3,921

'

2015

'

'

38,263

'

38,263

'

21,543

'

21,543

'

3,921

'

3,921

'

2016

'

'

36,321

'

36,321

'

18,363

'

18,363

'

3,921

'

3,921

'

2017

'

'

30,936

'

30,936

'

15,203

'

15,203

'

3,921

'

3,921

'

2018

'

'

$29,171

'

$29,171

'

$11,005

'

$11,005

'

$3,921

'

$3,921

'

Debt_Details

Debt (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Mar. 28, 2013
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	$8,566,582,000	$8,644,200,000	'
Senior unsecured notes (in US Dollars)	1,350,769,000	1,358,008,000	'
Revolving credit facility debt (in US Dollars)	83,982,000	1,170,000,000	'
Outstanding letters of credit	33,068,000	'	'
Notes And Mortgages Payable Fixed Rate [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest Rate, End of Period	4.91%	'	'
Mortgages payable (in US Dollars)	7,297,467,000	6,771,001,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 1290 Avenue Of Americas [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Equity method ownership percentage	70.00%	'	'
Debt Instrument Maturity	'11/22	'	'
Interest Rate, End of Period	3.34%	'	'
Mortgages payable (in US Dollars)	950,000,000	950,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York Two Penn Plaza [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'03/18	'	'
Interest Rate, End of Period	5.13%	'	'
Mortgages payable (in US Dollars)	425,000,000	425,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York Office 666 Fifth Avenue [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'03/23	'	'
Interest Rate, End of Period	3.61%	'	'
Mortgages payable (in US Dollars)	390,000,000	0	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 770 Broadway [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'03/16	'	'
Interest Rate, End of Period	5.65%	'	'
Mortgages payable (in US Dollars)	353,000,000	353,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 888 Seventh Avenue [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/16	'	'
Interest Rate, End of Period	5.71%	'	'
Mortgages payable (in US Dollars)	318,554,000	318,554,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 350 Park Avenue [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/17	'	'
Interest Rate, End of Period	3.75%	'	'
Mortgages payable (in US Dollars)	300,000,000	300,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 909 Third Avenue [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'04/15	'	'
Interest Rate, End of Period	5.64%	'	'
Mortgages payable (in US Dollars)	196,013,000	199,198,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 828-850 Madison Avenue Condominium - Retail [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'06/18	'	'
Interest Rate, End of Period	5.29%	'	'
Mortgages payable (in US Dollars)	80,000,000	80,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | New York 510 5th Avenue - Retail [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/16	'	'
Interest Rate, End of Period	5.60%	'	'
Mortgages payable (in US Dollars)	30,872,000	31,253,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC Skyline Properties [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'02/17	'	'
Interest Rate, End of Period	5.74%	'	'
Mortgages payable (in US Dollars)	736,259,000	704,957,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC River House Apartments [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'04/15	'	'
Interest Rate, End of Period	5.43%	'	'
Mortgages payable (in US Dollars)	195,546,000	195,546,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 2101 L Street [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'08/24	'	'
Interest Rate, End of Period	3.97%	'	'
Mortgages payable (in US Dollars)	150,000,000	150,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington Dc 2121 Crystal Drive [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'03/23	'	'
Interest Rate, End of Period	5.51%	'	'
Mortgages payable (in US Dollars)	149,005,000	150,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC Bowen Building [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'06/16	'	'
Interest Rate, End of Period	6.14%	'	'
Mortgages payable (in US Dollars)	115,022,000	115,022,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 1215 Clark Street, 200 12th Street And 251 18th Street [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/25	'	'
Interest Rate, End of Period	7.09%	'	'
Mortgages payable (in US Dollars)	103,794,000	105,724,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC West End 25 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'06/21	'	'
Interest Rate, End of Period	4.88%	'	'
Mortgages payable (in US Dollars)	101,671,000	101,671,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC Universal Buildings [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'04/14	'	'
Interest Rate, End of Period	6.56%	'	'
Mortgages payable (in US Dollars)	89,321,000	93,226,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 2011 Crystal Drive [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'08/17	'	'
Interest Rate, End of Period	7.30%	'	'
Mortgages payable (in US Dollars)	78,875,000	79,624,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 1550 And 1750 Crystal Drive [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'11/14	'	'
Interest Rate, End of Period	7.08%	'	'
Mortgages payable (in US Dollars)	71,841,000	74,053,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 220 20th Street [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'02/18	'	'
Interest Rate, End of Period	4.61%	'	'
Mortgages payable (in US Dollars)	73,003,000	73,939,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 2231 Crystal Drive [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	0	41,298,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Washington DC 1225 Clark Street [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	0	24,834,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'09/20	'	'
Interest Rate, End of Period	4.25%	'	'
Mortgages payable (in US Dollars)	563,692,000	573,180,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail Bergen Town Center [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'04/23	'	'
Interest Rate, End of Period	3.56%	'	'
Mortgages payable (in US Dollars)	300,000,000	0	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail Montehiedra Town Center [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'07/16	'	'
Interest Rate, End of Period	6.04%	'	'
Mortgages payable (in US Dollars)	120,000,000	120,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail Broadway Mall [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	0	85,180,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail North Bergen Tonnelle Avenue [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/18	'	'
Interest Rate, End of Period	4.59%	'	'
Mortgages payable (in US Dollars)	75,000,000	75,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail Las Catalinas Mall [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'11/13	'	'
Interest Rate, End of Period	6.97%	'	'
Mortgages payable (in US Dollars)	52,822,000	54,101,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Retail Other [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	68,659,000	86,641,000	'
Maturity, Range, Start	'06/14	'	'
Maturity, Range, End	'11/34	'	'
Interest Rate, Range, Minimum	5.12%	'	'
Interest Rate, Range, Maximum	7.30%	'	'
Notes And Mortgages Payable Fixed Rate [Member] | Other 555 California Street [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Equity method ownership percentage	70.00%	'	'
Debt Instrument Maturity	'09/21	'	'
Interest Rate, End of Period	5.10%	'	'
Mortgages payable (in US Dollars)	600,000,000	600,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Merchandise Mart Merchandise Mart [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'12/16	'	'
Interest Rate, End of Period	5.57%	'	'
Mortgages payable (in US Dollars)	550,000,000	550,000,000	'
Notes And Mortgages Payable Fixed Rate [Member] | Other Borgata Land [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'02/21	'	'
Interest Rate, End of Period	5.14%	'	'
Mortgages payable (in US Dollars)	59,518,000	60,000,000	'
Notes And Mortgages Payable Variable Rate [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest Rate, End of Period	2.39%	'	'
Mortgages payable (in US Dollars)	1,269,115,000	1,873,199,000	'
Notes And Mortgages Payable Variable Rate [Member] | New York Independence Plaza [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	0	334,225,000	'
Notes And Mortgages Payable Variable Rate [Member] | New York Eleven Penn Plaza [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/19	'	'
Interest Rate, End of Period	2.53%	'	'
Mortgages payable (in US Dollars)	330,000,000	330,000,000	'
Spread Over LIBOR	2.35%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | New York 100 West 33rd Street - Office & Retail [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'03/17	'	'
Interest Rate, End of Period	2.68%	'	'
Mortgages payable (in US Dollars)	325,000,000	325,000,000	'
Spread Over LIBOR	2.50%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | New York Office 4 Union Square South [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'11/19	'	'
Interest Rate, End of Period	2.33%	'	'
Mortgages payable (in US Dollars)	120,000,000	120,000,000	'
Spread Over LIBOR	2.15%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | New York 435 Seventh Avenue [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'08/19	'	'
Interest Rate, End of Period	2.43%	'	'
Mortgages payable (in US Dollars)	98,000,000	98,000,000	'
Spread Over LIBOR	2.25%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | New York 866 UN Plaza [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'05/16	'	'
Interest Rate, End of Period	1.43%	'	'
Mortgages payable (in US Dollars)	44,978,000	44,978,000	'
Spread Over LIBOR	'	1.25%	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | Washington DC River House Apartments [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'04/18	'	'
Interest Rate, End of Period	1.58%	'	'
Mortgages payable (in US Dollars)	64,000,000	64,000,000	'
Spread Over LIBOR	1.53%	'	'
Debt Instrument, Description of Variable Rate Basis	'Freddie Mac	'	'
Notes And Mortgages Payable Variable Rate [Member] | Washington DC 2200/2300 Clarendon Boulevard [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/15	'	'
Interest Rate, End of Period	0.93%	'	'
Mortgages payable (in US Dollars)	42,806,000	47,353,000	'
Spread Over LIBOR	0.75%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | Washington DC 1730 M And 1150 17th Street [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'06/14	'	'
Interest Rate, End of Period	1.58%	'	'
Mortgages payable (in US Dollars)	43,581,000	43,581,000	'
Spread Over LIBOR	1.40%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'09/20	'	'
Interest Rate, End of Period	2.36%	'	'
Mortgages payable (in US Dollars)	60,000,000	60,000,000	'
Spread Over LIBOR	1.36%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | Retail Bergen Town Center [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Mortgages payable (in US Dollars)	0	282,312,000	'
Notes And Mortgages Payable Variable Rate [Member] | Retail Other [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'07/18	'	'
Interest Rate, End of Period	1.48%	'	'
Mortgages payable (in US Dollars)	17,000,000	0	'
Spread Over LIBOR	1.30%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Notes And Mortgages Payable Variable Rate [Member] | Other 220 Central Park South [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'10/13	'	'
Interest Rate, End of Period	2.93%	'	'
Mortgages payable (in US Dollars)	123,750,000	123,750,000	'
Spread Over LIBOR	2.75%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Total Notes And Mortgages Payable [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest Rate, End of Period	4.54%	'	'
Mortgages payable (in US Dollars)	8,566,582,000	8,644,200,000	'
Senior Unsecured Notes [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest Rate, End of Period	5.69%	'	'
Senior unsecured notes (in US Dollars)	1,350,769,000	1,358,008,000	'
Senior Unsecured Notes [Member] | Senior Unsecured Notes Due 2015 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'04/15	'	'
Interest Rate, End of Period	4.25%	'	'
Senior unsecured notes (in US Dollars)	499,752,000	499,627,000	'
Senior Unsecured Notes [Member] | Senior Unsecured Notes Due 2039 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'10/39	'	'
Interest Rate, End of Period	7.88%	'	'
Senior unsecured notes (in US Dollars)	452,500,000	460,000,000	'
Senior Unsecured Notes [Member] | Senior Unsecured Notes Due 2022 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'01/22	'	'
Interest Rate, End of Period	5.00%	'	'
Senior unsecured notes (in US Dollars)	398,517,000	398,381,000	'
Unsecured Revolving Credit Facilities [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest Rate, End of Period	1.33%	'	'
Revolving credit facility debt (in US Dollars)	83,982,000	1,170,000,000	'
Unsecured Revolving Credit Facilities [Member] | Unsecured Revolving Credit Facility $1.25 Billion Maturing 11/16 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'11/16	'	'
Spread Over LIBOR	1.25%	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'	'
Revolving credit facility debt (in US Dollars)	0	1,150,000,000	'
Line of Credit Facility, Maximum Borrowing Capacity	1,250,000,000	'	'
Unsecured Revolving Credit Facilities [Member] | Unsecured Revolving Credit Facility $1.25 Billion Maturing 06/18 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument Maturity	'06/18	'	'
Interest Rate, End of Period	1.33%	'	'
Spread Over LIBOR	1.15%	'	1.35%
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'LIBOR	'
Revolving credit facility debt (in US Dollars)	83,982,000	20,000,000	'
Line of Credit Facility, Maximum Borrowing Capacity	1,250,000,000	'	'
Outstanding letters of credit	$33,068,000	$22,807,000	'

Debt_Parentheticals_Details

Debt (Parentheticals) (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Mar. 25, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Feb. 20, 2013

Sep. 30, 2013

Dec. 31, 2012

Mar. 25, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Oct. 31, 2013

Oct. 31, 2013

Oct. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Mar. 28, 2013

Sep. 30, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Variable Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Notes And Mortgages Payable Fixed Rate [Member]

Unsecured Revolving Credit Facilities [Member]

Unsecured Revolving Credit Facilities [Member]

Unsecured Revolving Credit Facilities [Member]

Retail Bergen Town Center [Member]

Retail Bergen Town Center [Member]

Retail Bergen Town Center [Member]

Washington DC River House Apartments [Member]

Washington DC River House Apartments [Member]

Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]

Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]

New York Office 666 Fifth Avenue [Member]

New York Office 666 Fifth Avenue [Member]

New York Office 666 Fifth Avenue [Member]

Retail Bergen Town Center [Member]

Retail Bergen Town Center [Member]

Retail Bergen Town Center [Member]

Washington DC Skyline Properties [Member]

Washington DC Skyline Properties [Member]

Washington DC Skyline Properties [Member]

Washington Dc Skyline Properties Senior Position [Member]

Washington Dc Skyline Properties Junior Position [Member]

Washington DC River House Apartments [Member]

Washington DC River House Apartments [Member]

Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]

Retail Cross Collateralized Mortgages On 40 Strip Shopping Centers [Member]

Extensions

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Tranches

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes And Loans Payable Refinanced Amount (in US Dollars)

'

'

'

'

'

'

'

'

'

'

'

'

'

$390,000

'

'

$300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Rate, End of Period

'

'

2.39%

'

'

'

'

1.58%

'

2.36%

'

4.91%

'

'

3.61%

'

'

3.56%

'

5.74%

'

5.74%

2.97%

'

5.43%

'

4.25%

'

'

1.33%

'

Face amount of mortgage loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

678,000

350,000

328,000

'

'

'

'

'

'

'

Number Of Loan Tranches

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

Maturity, Range, Start

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'February 2017

'

'

'

'

'

'

'

'

'

Maturity, Range, End

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'February 2022

'

'

'

'

'

'

'

'

'

Length Of Extension Available

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'6 months

'

'

Floating Rate Loan On Property

'

'

'

'

282,312

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Spread Over LIBOR

'

'

'

'

'

'

'

1.53%

'

1.36%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

LIBOR Floor

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgages payable (in US Dollars)

$8,566,582

$8,644,200

$1,269,115

$1,873,199

'

$0

$282,312

$64,000

$64,000

$60,000

$60,000

$7,297,467

$6,771,001

'

$390,000

$0

'

$300,000

$0

$736,259

$704,957

'

'

'

$195,546

$195,546

$563,692

$573,180

'

'

'

Debt Instrument, Description of Variable Rate Basis

'

'

'

'

'

'

'

'Freddie Mac

'

'LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Extensions Available

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

Facility fee percent

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.20%

0.30%

Redeemable_Partnership_Units_D

Redeemable Partnership Units (Details) (USD $)	9 Months Ended					0 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	9-May-13	Sep. 30, 2013	Dec. 31, 2012
				Capital Unit, Class A [Member]	Capital Unit, Class A [Member]	Series D15 Cumulative Redeemable Preferred Unit [Member]	Cumulative Redeemable Preferred Unit [Member]	Cumulative Redeemable Preferred Unit [Member]
Redeemable Noncontrolling Interests Rollforward [Abstract]	'	'	'	'	'	'	'	'
Reedemable Noncontrolling Interest, Beginning Balance	$944,152	$1,160,677	'	'	'	'	'	'
Net income	28,960	40,595	'	'	'	'	'	'
Other comprehensive loss	5,982	-15,717	'	'	'	'	'	'
Distributions	-25,827	-34,138	'	'	'	'	'	'
Redemption of Class A units for common shares, at redemption value	-19,627	-51,216	'	'	'	'	'	'
Adjustment to carry redeemable Class A units at redemption value	43,709	63,657	'	'	'	'	'	'
Redemption of redeemable units	-36,900	-168,300	'	'	'	'	'	'
Other, net	10,649	-59	'	'	'	'	'	'
Reedemable Noncontrolling Interest, Ending Balance	951,098	995,499	'	'	'	'	'	'
Redeemable Noncontrolling Interests Additional Disclosure [Abstract]	'	'	'	'	'	'	'	'
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	950,098	'	898,152	'	'	'	'	'
Temporary Equity Dividend Rate Percentage	'	'	'	'	'	6.88%	'	'
Fair value of Series G convertible preferred units and Series D-13 cumulative redeemable preferred units	'	'	'	'	'	'	55,097	55,011
Aggregate face amount of Cumulative redeemable preferred units	'	'	'	'	'	45,000	'	'
Redeemable Partnership Units Redemption Value	'	'	'	$950,098	$898,152	'	'	'

Partners_Capital_Details

Partners' Capital (Details) (USD $)	9 Months Ended		0 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Jan. 25, 2013	Feb. 19, 2013	Feb. 19, 2013	Feb. 19, 2013
			Series L Preferred Unit [Member]	Series F Preferred Unit [Member]	Series H Preferred Unit [Member]	Series F And Series H Preferred Unit [Member]
			Public Offering [Member]
			Redeemable Preferred Unit [Member]
			General Partner [Member]
Details Of Preferred Shares Of Beneficial Interest [Abstract]	'	'	'	'	'	'
Preferred shares of beneficial interest: issued shares	'	'	12,000,000	'	'	'
Preferred Stock Dividend Rate Percentage	'	'	5.40%	6.75%	6.75%	'
Preferred Stock, Par or Stated Value Per Unit (in Dollars PerShare)	'	'	$25	'	'	'
Aggregate net proceeds after underwriters discounts and issuance costs	'	'	$290,536	'	'	'
Preferred Stock Issued Additional Disclosure	'	'	'Vornado retained aggregate net proceeds of $290,536,000, after underwriters’ discounts and issuance costs, and contributed the net proceeds to us in exchange for 12,000,000 Series L Preferred Units (with economic terms that mirror those of the Series L Preferred Shares).	'	'	'
Purchase Of Outstanding Preferred Units	$299,400	$243,300	'	'	'	$262,500

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013
Accumulated other comprehensive (loss) income, Beginning Balance	$132,894	($18,946)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-7,163	144,677
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-42,404	-42,404
Net current period OCI	-49,567	102,273
Accumulated other comprehensive (loss) income, Ending Balance	83,327	83,327
Unrealized gain (loss) on securities available for sale [Member]	'	'
Accumulated other comprehensive (loss) income, Beginning Balance	188,570	19,432
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-8,252	160,886
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-42,404	-42,404
Net current period OCI	-50,656	118,482
Accumulated other comprehensive (loss) income, Ending Balance	137,914	137,914
Pro-rata share of non consolidated subsidiaries' OCI [Member]	'	'
Accumulated other comprehensive (loss) income, Beginning Balance	-12,041	11,313
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-1,669	-25,023
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Net current period OCI	-1,669	-25,023
Accumulated other comprehensive (loss) income, Ending Balance	-13,710	-13,710
Change in value of interest rate Swap [Member]	'	'
Accumulated other comprehensive (loss) income, Beginning Balance	-35,505	-50,065
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-295	14,265
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Net current period OCI	-295	14,265
Accumulated other comprehensive (loss) income, Ending Balance	-35,800	-35,800
Other [Member]	'	'
Accumulated other comprehensive (loss) income, Beginning Balance	-8,130	374
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	3,053	-5,451
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Net current period OCI	3,053	-5,451
Accumulated other comprehensive (loss) income, Ending Balance	($5,077)	($5,077)

Variable_Interest_Entities_Det

Variable Interest Entities (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Consolidated Variable Interest Entities [Member] | Independence Plaza [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$0	$957,730
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	0	443,894
Variable Interest Entity Consolidated Carrying Amount Noncontrolling Interest	0	193,933
Non Consolidated Variable Interest Entities [Member] | Washington DC Office Warner Building [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Variable Interest Entity, Nonconsolidated Carrying Amount Assets	'	8,775
Non Consolidated Variable Interest Entities [Member] | Independence Plaza And Warner Building [Member]	'	'
Variable Interest Entity [Line Items]	'	'
Variable Interest Entity, Nonconsolidated Carrying Amount Assets	$151,609	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	210,554	398,188
Real Estate Fund investments (75% of which is attributable to noncontrolling interests)	635,990	600,786
Deferred compensation plan assets (included in other assets)	111,752	105,200
J.C. Penney derivative position (included in other assets)	'	11,165
Total assets	958,296	1,115,339
Mandatorily redeemable instruments (included in other liabilities)	55,097	55,011
Interest rate swap (included in other liabilities)	35,800	50,065
Total liabilities	90,897	105,076
Fair Value, Measurements, Recurring [Member] | Real Estate Funds [Member]	'	'
Fair Value Measurements On Nonrecurring Basis [Abstract]	'	'
Other Partner's Ownership Interest In Real Estate Fund	75.00%	75.00%
Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value Measurements On Nonrecurring Basis [Abstract]	'	'
Investment in Toys"R" Us	'	478,041
Real estate assets	'	189,529
Condominium units (included in other assets)	'	52,142
Total Assets, Nonrecurring	'	719,712
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	210,554	398,188
Real Estate Fund investments (75% of which is attributable to noncontrolling interests)	0	0
Deferred compensation plan assets (included in other assets)	45,227	42,569
J.C. Penney derivative position (included in other assets)	'	0
Total assets	255,781	440,757
Mandatorily redeemable instruments (included in other liabilities)	55,097	55,011
Interest rate swap (included in other liabilities)	0	0
Total liabilities	55,097	55,011
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value Measurements On Nonrecurring Basis [Abstract]	'	'
Investment in Toys"R" Us	'	0
Real estate assets	'	0
Condominium units (included in other assets)	'	0
Total Assets, Nonrecurring	'	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 investments (75% of which is attributable to noncontrolling interests)	0	0
Deferred compensation plan assets (included in other assets)	0	0
J.C. Penney derivative position (included in other assets)	'	11,165
Total assets	0	11,165
Mandatorily redeemable instruments (included in other liabilities)	0	0
Interest rate swap (included in other liabilities)	35,800	50,065
Total liabilities	35,800	50,065
Fair Value Inputs Level 2 Member | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value Measurements On Nonrecurring Basis [Abstract]	'	'
Investment in Toys"R" Us	'	0
Real estate assets	'	0
Condominium units (included in other assets)	'	0
Total Assets, Nonrecurring	'	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 investments (75% of which is attributable to noncontrolling interests)	635,990	600,786
Deferred compensation plan assets (included in other assets)	66,525	62,631
J.C. Penney derivative position (included in other assets)	'	0
Total assets	702,515	663,417
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 Measurements On Nonrecurring Basis [Abstract]	'	'
Investment in Toys"R" Us	'	478,041
Real estate assets	'	189,529
Condominium units (included in other assets)	'	52,142
Total Assets, Nonrecurring	'	719,712

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 1) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

In Thousands, unless otherwise specified

Real Estate Funds [Member]

Real Estate Funds [Member]

Real Estate Funds [Member]

Real Estate Funds [Member]

Real Estate Funds [Member]

Real Estate Funds [Member]

Real Estate Funds [Member]

Deferred Compensation Plan Asset [Member]

Deferred Compensation Plan Asset [Member]

Deferred Compensation Plan Asset [Member]

Deferred Compensation Plan Asset [Member]

Investments

Minimum [Member]

Maximum [Member]

Weighted Average [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Investments Made By Fund

'

'

'

'

9

'

'

'

'

'

'

'

'

Real Estate Fund Nondepreciable Real Estate

$635,990

$600,786

$635,990

'

$635,990

'

'

'

'

'

'

'

'

Excess of fair value over cost

'

'

127,118

'

127,118

'

'

'

'

'

'

'

'

Fair Value Inputs Holding Period

'

'

'

'

'

'

'0 years 9 months 18 days

'6 years 8 months 12 days

'

'

'

'

'

Unobservable Quantitative Input [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rates

'

'

'

'

'

'

12.00%

17.50%

13.90%

'

'

'

'

Terminal capitalization rates

'

'

'

'

'

'

5.30%

6.00%

5.70%

'

'

'

'

Beginning Balance

'

'

622,124

388,455

600,786

346,650

'

'

'

66,502

58,313

62,631

56,221

Purchases

'

'

7,406

88,429

38,299

163,021

'

'

'

880

1,650

4,027

5,416

Sales / Returns

'

'

-14,184

0

-70,848

-61,052

'

'

'

-873

-276

-5,318

-4,287

Net realized gains

'

'

8,184

0

8,184

0

'

'

'

'

'

'

'

Net unrealized gains

'

'

12,367

5,558

59,476

33,537

'

'

'

'

'

'

'

Realized and unrealized (loss) gains

'

'

'

'

'

'

'

'

'

-42

1,080

4,094

3,349

Other, Net

'

'

93

0

93

286

'

'

'

58

0

1,091

68

Ending Balance

'

'

$635,990

$482,442

$635,990

$482,442

'

'

'

$66,525

$60,767

$66,525

$60,767

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 2) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Senior unsecured notes	$1,350,769	$1,358,008
Carrying (Reported) Amount, Fair Value Disclosure [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash equivalents	380,248	543,000
Mortgage and mezzanine loans receivable	176,388	225,359
Total assets	556,636	768,359
Mortgages payable	8,566,582	8,644,200
Senior unsecured notes	1,350,769	1,358,008
Revolving credit facility debt	83,982	1,170,000
Total debt	10,001,333	11,172,208
Estimate of Fair Value, Fair Value Disclosure [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash equivalents	380,248	543,000
Mortgage and mezzanine loans receivable	176,098	221,446
Total assets	556,346	764,446
Mortgages payable	8,638,000	8,672,000
Senior unsecured notes	1,413,000	1,468,000
Revolving credit facility debt	83,982	1,170,000
Total debt	$10,134,982	$11,310,000

Incentive_Compensation_Details

Incentive Compensation (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Share Based Compensation Expense (in US Dollars)	$9,201	$7,774	$25,796	$22,821
Out Performance Plan [Member]	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Duration Of First Performance Measurement Period	'	'	'2 years	'
Duration Of Second Performance Measurement Period	'	'	'3 years	'
Award vesting in three years	'	'	33.00%	'
Award vesting in four years	'	'	33.00%	'
Award vesting in five years	'	'	34.00%	'
Out Performance Plan And Absolute Component [Member]	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Required Shareholder Return Two Year	'	'	14.00%	'
Required Shareholder Return Three Year	'	'	21.00%	'
Percentage Of Shareholder Return Under Which No Awards Will Be Earned	'	'	0.00%	'
Out Performance Plan And Relative Component [Member]	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Required Shareholder Return Under Relative Component	'	'	6.00%	'

Fee_and_Other_Income_Details

Fee and Other Income (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Fee And Other Income [Line Items]	'	'	'	'
BMS cleaning fees	$15,898	$16,945	$49,071	$49,437
Signage Revenue	8,738	4,783	23,566	14,252
Management and leasing fees	7,982	7,234	19,675	16,534
Lease termination fees	20,432	282	87,587	1,172
Other income	8,108	10,381	26,431	24,494
Fee and other income	61,158	39,625	206,330	105,889
Management fee income from Interstate Properties	134	198	467	588
Stop & Shop [Member]	'	'	'	'
Loss Contingencies [Line Items]	'	'	'	'
Complaint regarding rent allocation	6,000	'	6,000	'
Gain related to litigation settlement	'	'	59,599	'
New York 1290 Avenue Of Americas [Member]	'	'	'	'
Fee And Other Income [Line Items]	'	'	'	'
Write Off Of Straight Lining Of Rent	1,529	'	1,529	'
Parent Company Includig Minority Partner [Member]	'	'	'	'
Fee And Other Income [Line Items]	'	'	'	'
Lease termination fees	19,500	'	'	'
Vornado Realty Trust [Member]	'	'	'	'
Fee And Other Income [Line Items]	'	'	'	'
Lease termination fees	$12,121	'	'	'

Interest_and_Other_Investment_2

Interest and Other Investment Income (Loss), Net (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	($10,275)	$10,523	($32,933)	($22,984)
Marketable Equity Securities Derivative Positions [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	-20,012	4,344	-33,487	-53,343
Income From Prepayment Penalties [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	0	0	5,267	0
Mezzanine Loans Receivable [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	4,766	2,852	14,783	8,867
Marketable Securities [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	2,804	0	8,344	11,093
Mark to Market of deferred Compensation Plan [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	269	1,116	6,207	5,267
Impairment Losses On Marketable Securities [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	0	0	-39,487	0
Other Investment Income [Member]	'	'	'	'
Schedule of Investment Income, Reported Amounts, by Category [Line Items]	'	'	'	'
Total Interest and Other Investment Income, net	$1,898	$2,211	$5,440	$5,132

Interest_and_Debt_Expense_Deta

Interest and Debt Expense (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest Expense Debt [Abstract]	'	'	'	'
Interest expense	$125,422	$121,230	$375,963	$364,223
Amortization of deferred financing costs	4,980	5,623	15,189	16,918
Capitalized interest	-10,532	-7,523	-28,024	-7,884
Interest and Debt Expense, Total	$119,870	$119,330	$363,128	$373,257

Income_Per_Class_A_Unit_Detail

Income Per Class A Unit (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Per Class A Unit [Abstract]	'	'	'	'
Income from continuing operations, net of income attributable to noncontrolling interests in consolidated subsidiaries	$92,627	$99,007	$266,235	$324,231
Income from discontinued operations, net of income attributable to noncontrolling interests in consolidated subsidiaries	15,791	158,539	287,215	247,489
Net income attributable to Vornado Realty L.P.	108,418	257,546	553,450	571,720
Preferred unit distributions	-20,381	-22,016	-63,585	-65,337
Preferred unit redemptions	0	11,700	-1,130	11,700
Net Income attributable to Class A unitholders	88,037	247,230	488,735	518,083
Earnings allocated to unvested participating securities	-699	-1,008	-2,203	-2,302
Numerator for basic income per Class A unit	87,338	246,222	486,532	515,781
Convertible preferred unit distributions	0	28	82	85
Numerator for diluted income per Class A unit	$87,338	$246,250	$486,614	$515,866
Denominator for basic income per Class A unit - weighted average units (in units)	197,599	197,155	197,510	197,050
Vornado stock options and restricted unit awards (in shares)	1,118	1,046	1,049	1,028
Convertible preferred units	0	50	48	50
Denominator for diluted income per Class A unit - weighted average units and assumed conversions (in units)	198,717	198,251	198,607	198,128
INCOME PER CLASS A UNIT - BASIC:	'	'	'	'
Income from continuing operations, net (in dollars per unit)	0.36	0.45	1.01	1.36
Income from discontinued operations, net (in dollars per unit)	0.08	0.8	1.45	1.26
Net income per Class A unit (in dollars per unit)	0.44	1.25	2.46	2.62
INCOME PER CLASS A UNIT - DILUTED:	'	'	'	'
Income from continuing operations, net (in dollars per unit)	0.36	0.44	1	1.35
Income from discontinued operations, net (in dollars per unit)	0.08	0.8	1.45	1.25
Net income per Class A unit (in dollars per unit)	0.44	1.24	2.45	2.6

Income_Per_Class_A_Unit_Parent

Income Per Class A Unit (Parentheticals) (Details)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Per Class A Unit [Abstract]	'	'	'	'
Weighted average common share equivalents of excluded dilutive securities due to anti-dilutive effect	1,009	1,056	962	3,320

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Capital And Other Commitments [Line Items]	'
Number Of Subsidiaries Entering Into Development Contract	2
Commitment to fund additional capital to partially owned entities	$155,000
Guarantees and master leases	367,000
Outstanding letters of credit	33,068
Cleveland Medical Mart & Convention Center [Member]	'
Capital And Other Commitments [Line Items]	'
Commitments to Fund Improvements	11,500
Commitment Funded During Period	3,598
NBCR Losses [Member]	'
Insurance limit per occurrence	2,000,000
Federal government deductible, percentage of balance of a covered loss	85.00%
Earthquake California Properties [Member]	'
Insurance limit per occurrence	180,000
Vornado deductible, percentage of property value	5.00%
Vornado deductible, annual aggregate	180,000
All Risk And Rental Value [Member]	'
Insurance limit per occurrence	2,000,000
General Liability [Member]	'
Insurance limit per occurrence	300,000
PPIC [Member] | NBCR Losses [Member]	'
Insurance deductible	$3,200
Insurance Deductible Percentage Of Balance Of Covered Loss	15.00%

Subsequent_Events_Narratives_D

Subsequent Events (Narratives) (Details) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Oct. 01, 2013	Oct. 04, 2013	Oct. 15, 2013
					Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
					New York Harlem Park 1800 Park Avenue [Member]	New York 655 Fifth Avenue [Member]	New York Manhattan 220 Central Park South Site [Member]
					Other Segment [Member]	New York Segment [Member]	Other Segment [Member]
						sqft	sqft
						ft
Subsequent Event [Line Items]	'	'	'	'	'	'	'
Gross proceeds from sale of real estate	'	'	'	'	$66,000	'	'
Net proceeds from sale of real estate	'	'	'	'	63,000	'	'
Net gain on sale of of real estate	18,996	131,088	286,990	203,801	23,000	'	'
Business acquisition description of acquisition	'	'	'	'	'	'On October 4, 2013, we acquired a 92.5% interest in 655 Fifth Avenue, a 57,500 square foot retail and office property located at the northeast corner of Fifth Avenue and 52nd Street in Manhattan with 50 feet of frontage on Fifth Avenue, for $277,500,000 in cash. We consolidate the accounts of the property into our consolidated financial statements.	'On October 15, 2013, we acquired, for $194,000,000, land and air rights for 137,000 zoning square feet thereby completing the assemblage for our 220 Central Park South site in Manhattan.
Equity method ownership percentage	'	'	'	'	'	92.50%	'
Square Footage Of Real Estate Property	'	'	'	'	'	57,500	137,000
Frontage Length	'	'	'	'	'	50	'
Cost Of Acquired Entity Purchase Price	'	'	'	'	'	$277,500	$194,000

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Property rentals	$505,062	$486,914	$1,521,127	$1,443,478
Straight-line rent adjustments	15,809	11,391	47,989	53,169
Amortization of acquired below-market leases, net	11,820	13,256	40,326	39,569
Total rentals	532,691	511,561	1,609,442	1,536,216
Tenant expense reimbursements	84,638	79,215	236,580	220,679
Cleveland Medical Mart development project	4,893	72,651	34,026	184,014
BMS cleaning fees	15,898	16,945	49,071	49,437
Signage Revenue	8,738	4,783	23,566	14,252
Management and leasing fees	7,982	7,234	19,675	16,534
Lease termination fees	20,432	282	87,587	1,172
Other income	8,108	10,381	26,431	24,494
Total Revenues	683,380	703,052	2,086,378	2,046,798
Operating expenses	264,422	261,512	784,031	749,213
Depreciation and amortization	124,079	122,241	400,952	381,270
General and administrative	48,250	48,456	157,155	150,578
Cleveland Medical Mart development project	3,239	70,431	29,764	177,127
Acquisition related costs	2,818	1,070	6,769	4,314
Total expenses	442,808	503,710	1,378,671	1,462,502
Operating income (loss)	240,572	199,342	707,707	584,296
(Loss) Income from partially owned entities	-32,756	12,683	-45,620	142,187
Income from real estate fund	22,913	5,509	73,947	37,572
Interest and other investment (loss) income, net	-10,275	10,523	-32,933	-22,984
Interest and debt expense	-119,870	-119,330	-363,128	-373,257
Net gain (loss) on disposition of wholly owned and partially owned assets	15,138	0	-20,581	4,856
Income (loss) before income taxes	115,722	108,727	319,392	372,670
Income tax expense	-2,222	-3,015	-6,172	-17,319
Income (loss) from continuing operations	113,500	105,712	313,220	355,351
Income from discontinued operations	18,751	158,444	290,279	247,297
Net income (loss)	132,251	264,156	603,499	602,648
Less net income attributable to noncontrolling interests in consolidated subsidiaries	-23,833	-6,610	-50,049	-30,928
Net income attributable to Vornado Realty L.P.	108,418	257,546	553,450	571,720
Interest and debt expense (2)	183,116	183,241	551,357	567,265
Depreciation and amortization (2)	172,756	177,593	549,072	552,794
Income tax (benefit) expense (2)	-20,292	3,850	18,101	50,076
EBITDA	443,998	622,230	1,671,980	1,741,855
Toys R Us [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	-34,209	-8,585	-69,311	88,696
All Equity Method Investees Excluding Toys [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	1,453	21,268	23,691	53,491
New York Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Property rentals	277,855	255,703	839,349	735,587
Straight-line rent adjustments	9,430	8,140	27,289	42,334
Amortization of acquired below-market leases, net	7,151	8,458	26,184	23,776
Total rentals	294,436	272,301	892,822	801,697
Tenant expense reimbursements	47,142	45,164	128,598	118,861
BMS cleaning fees	21,191	23,918	63,192	70,476
Signage Revenue	8,738	4,783	23,566	14,252
Management and leasing fees	2,615	1,816	7,533	4,037
Lease termination fees	19,496	78	24,986	334
Other income	581	1,116	4,550	3,449
Total Revenues	394,199	349,176	1,145,247	1,013,106
Operating expenses	160,465	159,048	478,318	447,910
Depreciation and amortization	58,058	57,967	203,679	168,391
General and administrative	7,849	6,739	25,552	21,980
Total expenses	226,372	223,754	707,549	638,281
Operating income (loss)	167,827	125,422	437,698	374,825
(Loss) Income from partially owned entities	4,189	9,309	14,020	20,345
Interest and other investment (loss) income, net	1,468	1,057	4,076	3,166
Interest and debt expense	-42,538	-36,817	-125,991	-109,365
Income (loss) before income taxes	130,946	98,971	329,803	288,971
Income tax expense	-65	-815	-1,298	-2,480
Income (loss) from continuing operations	130,881	98,156	328,505	286,491
Income from discontinued operations	'	0	'	-640
Net income (loss)	130,881	98,156	328,505	285,851
Less net income attributable to noncontrolling interests in consolidated subsidiaries	-6,556	-2,092	-9,518	-7,266
Net income attributable to Vornado Realty L.P.	124,325	96,064	318,987	278,585
Interest and debt expense (2)	59,344	46,823	163,579	140,294
Depreciation and amortization (2)	67,294	62,905	220,280	188,480
Income tax (benefit) expense (2)	67	871	1,444	2,677
EBITDA	251,030	206,663	704,290	610,036
New York Segment [Member] | All Equity Method Investees Excluding Toys [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	4,189	9,309	14,020	20,345
Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Property rentals	113,737	115,641	338,742	356,459
Straight-line rent adjustments	234	1,267	4,242	4,382
Amortization of acquired below-market leases, net	521	506	1,543	1,537
Total rentals	114,492	117,414	344,527	362,378
Tenant expense reimbursements	10,462	9,601	31,264	30,471
Management and leasing fees	5,263	4,615	11,529	9,782
Lease termination fees	867	128	1,417	256
Other income	6,520	8,288	17,915	18,846
Total Revenues	137,604	140,046	406,652	421,733
Operating expenses	49,646	50,305	145,258	143,923
Depreciation and amortization	31,109	29,825	92,678	107,395
General and administrative	6,857	6,668	20,655	19,849
Total expenses	87,612	86,798	258,591	271,167
Operating income (loss)	49,992	53,248	148,061	150,566
(Loss) Income from partially owned entities	-2,003	-2,182	-6,545	-4,571
Interest and other investment (loss) income, net	17	24	99	97
Interest and debt expense	-27,246	-28,311	-83,350	-85,408
Income (loss) before income taxes	20,760	22,779	58,265	60,684
Income tax expense	-766	25	-1,949	-1,277
Income (loss) from continuing operations	19,994	22,804	56,316	59,407
Income from discontinued operations	'	126,437	'	130,979
Net income (loss)	19,994	149,241	56,316	190,386
Net income attributable to Vornado Realty L.P.	19,994	149,241	56,316	190,386
Interest and debt expense (2)	30,717	33,280	93,715	99,486
Depreciation and amortization (2)	35,403	35,071	105,799	122,987
Income tax (benefit) expense (2)	828	-25	2,134	1,532
EBITDA	86,942	217,567	257,964	414,391
Washington DC Segment [Member] | All Equity Method Investees Excluding Toys [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	-2,003	-2,182	-6,545	-4,571
Retail Properties Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Property rentals	63,361	63,408	189,964	190,671
Straight-line rent adjustments	1,491	1,873	3,741	5,265
Amortization of acquired below-market leases, net	2,894	2,882	8,669	9,989
Total rentals	67,746	68,163	202,374	205,925
Tenant expense reimbursements	21,670	19,787	63,601	61,307
Management and leasing fees	371	736	1,170	2,640
Lease termination fees	0	73	59,797	74
Other income	656	569	1,448	1,232
Total Revenues	90,443	89,328	328,390	271,178
Operating expenses	31,628	30,726	98,374	97,154
Depreciation and amortization	16,455	16,359	47,935	51,877
General and administrative	4,240	6,103	14,824	18,803
Total expenses	52,323	53,188	161,133	167,834
Operating income (loss)	38,120	36,140	167,257	103,344
(Loss) Income from partially owned entities	188	342	1,512	1,040
Interest and other investment (loss) income, net	1	4	5	24
Interest and debt expense	-10,839	-13,292	-34,523	-45,362
Net gain (loss) on disposition of wholly owned and partially owned assets	1,377	'	1,377	'
Income (loss) before income taxes	28,847	23,194	135,628	59,046
Income tax expense	-731	'	-1,480	0
Income (loss) from continuing operations	28,116	23,194	134,148	59,046
Income from discontinued operations	19,012	11,370	290,267	37,456
Net income (loss)	47,128	34,564	424,415	96,502
Less net income attributable to noncontrolling interests in consolidated subsidiaries	-2,970	97	-3,079	308
Net income attributable to Vornado Realty L.P.	44,158	34,661	421,336	96,810
Interest and debt expense (2)	12,119	17,499	40,057	58,039
Depreciation and amortization (2)	17,573	21,345	52,440	65,751
Income tax (benefit) expense (2)	731	0	1,480	0
EBITDA	74,581	73,505	515,313	220,600
Retail Properties Segment [Member] | All Equity Method Investees Excluding Toys [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	188	342	1,512	1,040
Toys R Us Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	-34,209	-8,585	-69,311	88,696
Income (loss) before income taxes	-34,209	-8,585	-69,311	88,696
Income (loss) from continuing operations	-34,209	-8,585	-69,311	88,696
Net income (loss)	-34,209	-8,585	-69,311	88,696
Net income attributable to Vornado Realty L.P.	-34,209	-8,585	-69,311	88,696
Interest and debt expense (2)	38,435	34,526	119,347	103,388
Depreciation and amortization (2)	32,176	33,160	103,732	100,371
Income tax (benefit) expense (2)	-22,690	-11,118	10,959	17,982
EBITDA	13,712	47,983	164,727	310,437
Toys R Us Segment [Member] | Toys R Us [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	-34,209	-8,585	-69,311	88,696
Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Property rentals	50,109	52,162	153,072	160,761
Straight-line rent adjustments	4,654	111	12,717	1,188
Amortization of acquired below-market leases, net	1,254	1,410	3,930	4,267
Total rentals	56,017	53,683	169,719	166,216
Tenant expense reimbursements	5,364	4,663	13,117	10,040
Cleveland Medical Mart development project	4,893	72,651	34,026	184,014
BMS cleaning fees	-5,293	-6,973	-14,121	-21,039
Management and leasing fees	-267	67	-557	75
Lease termination fees	69	3	1,387	508
Other income	351	408	2,518	967
Total Revenues	61,134	124,502	206,089	340,781
Operating expenses	22,683	21,433	62,081	60,226
Depreciation and amortization	18,457	18,090	56,660	53,607
General and administrative	29,304	28,946	96,124	89,946
Cleveland Medical Mart development project	3,239	70,431	29,764	177,127
Acquisition related costs	2,818	1,070	6,769	4,314
Total expenses	76,501	139,970	251,398	385,220
Operating income (loss)	-15,367	-15,468	-45,309	-44,439
(Loss) Income from partially owned entities	-921	13,799	14,704	36,677
Income from real estate fund	22,913	5,509	73,947	37,572
Interest and other investment (loss) income, net	-11,761	9,438	-37,113	-26,271
Interest and debt expense	-39,247	-40,910	-119,264	-133,122
Net gain (loss) on disposition of wholly owned and partially owned assets	13,761	'	-21,958	4,856
Income (loss) before income taxes	-30,622	-27,632	-134,993	-124,727
Income tax expense	-660	-2,225	-1,445	-13,562
Income (loss) from continuing operations	-31,282	-29,857	-136,438	-138,289
Income from discontinued operations	-261	20,637	12	79,502
Net income (loss)	-31,543	-9,220	-136,426	-58,787
Less net income attributable to noncontrolling interests in consolidated subsidiaries	-14,307	-4,615	-37,452	-23,970
Net income attributable to Vornado Realty L.P.	-45,850	-13,835	-173,878	-82,757
Interest and debt expense (2)	42,501	51,113	134,659	166,058
Depreciation and amortization (2)	20,310	25,112	66,821	75,205
Income tax (benefit) expense (2)	772	14,122	2,084	27,885
EBITDA	17,733	76,512	29,686	186,391
Other Segment [Member] | Toys R Us [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	'	'	0	'
Other Segment [Member] | All Equity Method Investees Excluding Toys [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
(Loss) Income from partially owned entities	($921)	$13,799	$14,704	$36,677

Segment_Information_Parentheti

Segment Information (Parentheticals) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	$443,998	$622,230	$1,671,980	$1,741,855
New York Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	251,030	206,663	704,290	610,036
Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	86,942	217,567	257,964	414,391
Total Retail properties [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	74,581	73,505	515,313	220,600
Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	17,733	76,512	29,686	186,391
Office Properties [Member] | New York Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	172,367	139,894	476,849	418,414
Office Properties [Member] | Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	76,061	206,945	225,009	382,423
Retail [Member] | New York Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	59,782	46,165	177,394	135,399
Alexanders Inc [Member] | New York Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,387	13,080	31,141	39,477
Hotel Pennsylvania [Member] | New York Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	8,494	7,524	18,906	16,746
Washington Dc Office Excluding Skyline Properties [Member] | Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	69,220	197,009	202,463	350,296
Washington Dc Office Excluding Skyline Properties [Member] | Net Gain On Sale Of Real Estate [Member] | Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	126,621	'	126,621
Washington DC Skyline Properties [Member] | Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	6,841	9,936	22,546	32,127
Washington Dc Residential Property [Member] | Washington DC Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,881	10,622	32,955	31,968
Retail Segment Strip Shopping Centers [Member] | Total Retail properties [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	59,175	49,378	264,065	148,554
Retail Segment Strip Shopping Centers [Member] | Litigation Settlement Income [Member] | Total Retail properties [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	'	59,599	'
Retail Segment Strip Shopping Centers [Member] | Net Gain On Sale Of Real Estate [Member] | Total Retail properties [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	16,087	'	81,806	'
Retail Segment Regional Malls [Member] | Total Retail properties [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	15,406	24,127	251,248	72,046
Retail Segment Regional Malls [Member] | Net Gain On Sale Of Real Estate [Member] | Total Retail properties [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	'	202,275	'
LNR [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	18,773	20,443	46,006
Merchandise Mart Building 7 West 34th Street And Trade Shows [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	15,006	13,869	52,167	46,518
Other Properties 555 California Street [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	10,720	10,714	32,371	31,406
India real estate ventures [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	695	1,841	4,708	1,718
Lexington Realty Trust [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	7,859	6,931	24,780
Other Investments [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	5,330	9,280	14,207	30,226
Corporate general and administrative expenses [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	-23,467	-22,811	-71,054	-66,940
Investment income and other, net [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	11,108	6,854	39,153	30,900
Net Gain On Sale Of Marketable Securities [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	31,741	'	31,741	3,582
Impairment loss on J.C. Penney owned shares [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	'	-39,487	'
Gain Loss on Sale of J.C. Penney shares [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	-18,114	'	-54,914	'
Income from the mark-to-market of J.C. Penney derivative position [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	-20,012	4,344	-33,487	-53,343
Merchandise Mart Reduction In Force And Severance Costs [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	-1,014	-4,154	-1,520
Merchandise Mart Discontinued Operations [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	-81	32,087	2,065	88,488
Verde Realty Operating Partnership [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	'	-4,936	'	-4,936
Aquisiiton Costs [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	-2,818	-1,070	-6,769	-4,314
Net Gain On Sale Of Residential Condominiums [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	134	'	1,139	1,274
Other Ebitda Attributable To Identifiable Investments [Member] | Other Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	39,242	63,058	165,453	193,200
Income before net realized/unrealized gains [Member] | Other Segment [Member] | Real Estate Funds [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	1,997	1,874	1,746	4,162
Net unrealized gains [Member] | Other Segment [Member] | Real Estate Funds [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	3,092	1,389	14,869	8,384
Net realized gains [Member] | Other Segment [Member] | Real Estate Funds [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	2,046	'	2,046	'
Carried Interest [Member] | Other Segment [Member] | Real Estate Funds [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	356	-2,541	15,965	'
Total [Member] | Other Segment [Member] | Real Estate Funds [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Earnings Before Interest, Taxes, Depreciation, and Amortization	$7,491	$722	$34,626	$12,546