Investments in Partially Owned Entities (Tables)

12 Months Ended

Dec. 31, 2014

Schedule Of Equity Method Investments [Line Items]

Equity Method Investment Summarized Financial Information [Table Text Block]

(Amounts in thousands)				Balance as of December 31,
Balance Sheet:				2014		2013
	Assets			$	21,389,000	$	21,773,000
	Liabilities				17,986,000		17,982,000
	Noncontrolling interests				104,000		96,000
	Equity				3,299,000		3,695,000

		For the Year Ended December 31,
Income Statement:		2014		2013		2012
	Total revenue	$	13,620,000	$	14,092,000	$	15,119,000
	Net (loss) income⁽¹⁾		(434,000)		(368,000)		1,091,000


(1)	2012 includes a $600,000 net gain on sale of real estate.

Equity Method Investments [Table Text Block]

			Percentage
(Amounts in thousands)			Ownership at	As of December 31,
Investments:			December 31, 2014	2014		2013
	Toys		32.6%	$	-	$	83,224

	Alexander’s		32.4%	$	131,616	$	167,785
	India real estate ventures		4.1%-36.5%		76,752		88,467
	Partially owned office buildings⁽¹⁾		Various		760,749		621,294
	Other investments⁽²⁾		Various		277,379		288,897
				$	1,246,496	$	1,166,443
______________________________________________________
(1)		Includes interests in 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
(2)		Includes interests in Independence Plaza, Monmouth Mall, 85 Tenth Avenue, Fashion Center Mall, 50-70 West 93rd Street and others.

				Percentage
(Amounts in thousands)				Ownership at		For the Year Ended December 31,
Our Share of Net (Loss) Income:				December 31, 2014		2014		2013		2012
	Toys:
		Equity in net (loss) earnings			32.6%	$	(4,691)	$	(128,919)	$	45,267
		Non-cash impairment losses (see page 113 for details)					(75,196)		(240,757)		(40,000)
		Management fees					6,331		7,299		9,592
						$	(73,556)	$	(362,377)	$	14,859

	Alexander's:
		Equity in net income			32.4%	$	21,287	$	17,721	$	24,709
		Management, leasing and development fees					8,722		6,681		13,748
		Net gain on sale of real estate					-		-		179,934
							30,009		24,402		218,391

	India real estate ventures⁽¹⁾				4.1%-36.5%		(8,309)		(3,533)		(5,008)

	Partially owned office buildings⁽²⁾				Various		93		(4,212)		(3,770)

	Other investments⁽³⁾				Various		(6,368)		(10,817)		103,644

	LNR (see page 115 for details):
		Equity in net income			n/a		-		42,186		66,270
		Impairment loss					-		(27,231)		-
		Net gain on sale					-		3,776		-
							-		18,731		66,270

	Lexington (see page 112 for details):⁽⁴⁾				n/a
		Equity in net loss					-		(979)		(23)
		Net gain resulting from Lexington's stock issuance and asset
			acquisition				-		-		28,763
							-		(979)		28,740

						$	15,425	$	23,592	$	408,267
______________________________________________________
(1)			Includes a $5,771 non-cash impairment loss in 2014.
(2)			Includes interests in 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
(3)			Includes interests in Independence Plaza, Monmouth Mall, 85 Tenth Avenue, Fashion Center Mall, 50-70 West 93rd Street and others. In the third quarter of 2014, we recognized a $10,263 non-cash charge, comprised of a $5,959 impairment loss and a $4,304 loan loss reserve, on our equity and debt investments in Suffolk Downs.
(4)			In the first quarter of 2013, we began accounting for our investment in Lexington as a marketable equity security - available for sale.

Schedule of debt of partially owned entities [Table Text Block]


		Below is a summary of the debt of our partially owned entities as of December 31, 2014 and 2013, none of which is recourse to us.

			Percentage		Interest
			Ownership at		Rate at	100% Partially Owned Entities’
(Amounts in thousands)			December 31,		December 31,	Debt at December 31,
			2014	Maturity	2014	2014		2013
Toys:
	Notes, loans and mortgages payable		32.6%	2015-2021	7.23%	$	5,748,350	$	5,702,247

Alexander's:
	Mortgages payable		32.4%	2015-2021	2.59%	$	1,032,780	$	1,049,959

Partially owned office buildings⁽¹⁾^:
	Mortgages payable		Various	2015-2023	5.59%	$	3,691,274	$	3,622,759

India Real Estate Ventures:
	TCG Urban Infrastructure Holdings mortgages
		payable	25.0%	2015-2026	13.25%	$	183,541	$	199,021

Other⁽²⁾^:
	Mortgages payable		Various	2015-2023	4.33%	$	1,480,485	$	1,709,509


(1)		Includes 280 Park Avenue, 650 Madison Avenue, One Park Avenue, 666 Fifth Avenue (Office), 330 Madison Avenue and others.
(2)		Includes Independence Plaza, Monmouth Mall, Fashion Center 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:					November 1, 2014		November 2, 2013
	Assets				$	11,267,000	$	11,756,000
	Liabilities					10,377,000		10,437,000
	Noncontrolling interests					82,000		75,000
	Toys “R” Us, Inc. equity⁽¹⁾					808,000		1,244,000

			For the Twelve Months Ended
Income Statement:			November 1, 2014		November 2, 2013		October 27, 2012
	Total revenues		$	12,645,000	$	13,046,000	$	13,698,000
	Net (loss) income attributable to Toys			(343,000)		(396,000)		138,000


(1)		At December 31, 2014, the carrying amount of our investment in Toys is less than our share of Toys' equity by approximately $263,455. This basis difference results primarily from non-cash impairment losses aggregating $355,953 that we have recognized through December 31, 2014. We have allocated the basis difference primarily to Toys' real estate, which is being amortized over its remaining estimated useful life.

Alexanders Inc [Member]

Schedule Of Equity Method Investments [Line Items]

Equity Method Investment Summarized Financial Information [Table Text Block]

(Amounts in thousands)				Balance as of December 31,
Balance Sheet:				2014		2013
	Assets			$	1,423,000	$	1,458,000
	Liabilities				1,075,000		1,124,000
	Stockholders' equity				348,000		334,000

		For the Year Ended December 31,
Income Statement:		2014		2013		2012
	Total revenues	$	201,000	$	196,000	$	191,000
	Net income attributable to Alexander’s ⁽¹⁾		68,000		57,000		674,000


(1)	2012 includes a $600,000 net gain on sale of real estate.