The Macerich Company (MAC) 10-Q 4 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 04, 2013
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'MACERICH CO	'
Entity Central Index Key	'0000912242	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	140,540,086
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS:	'		'
Property, net	$7,733,929		$7,479,546
Cash and cash equivalents	62,108		65,793
Restricted cash	26,704		78,658
Marketable securities	0		23,667
Tenant and other receivables, net	94,719		103,744
Deferred charges and other assets, net	546,582		565,130
Loans to unconsolidated joint ventures	2,736		3,345
Due from affiliates	32,299		17,068
Investments in unconsolidated joint ventures	706,450		974,258
Total assets	9,205,527		9,311,209
Mortgage notes payable:	'		'
Related parties	270,715	[1]	274,609	[1]
Others	4,209,900	[1]	4,162,734	[1]
Total	4,480,615		4,437,343
Bank and other notes payable	282,937		824,027
Accounts payable and accrued expenses	85,394		70,251
Other accrued liabilities	360,408		318,174
Distributions in excess of investments in unconsolidated joint ventures	257,452		152,948
Co-venture obligation	83,951		92,215
Total liabilities	5,550,757		5,894,958
Commitments and contingencies	'		'
Stockholders' equity:	'		'
Common stock, $0.01 par value, 250,000,000 shares authorized, 140,716,198 and 137,507,010 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	1,407		1,375
Additional paid-in capital	3,901,676		3,715,895
Accumulated deficit	-606,464		-639,741
Total stockholders' equity	3,296,619		3,077,529
Noncontrolling interests	358,151		338,722
Total equity	3,654,770		3,416,251
Total liabilities and equity	$9,205,527		$9,311,209
[1]	The mortgage notes payable balances include the unamortized debt premiums (discounts). Debt premiums (discounts) represent the excess (deficiency) of the fair value of debt over (under) the principal value of debt assumed in various acquisitions and are amortized to interest expense over the remaining term of the related debt in a manner that approximates the effective interest method.Debt premiums (discounts) consist of the following:Property Pledged as CollateralSeptember 30, 2013 December 31, 2012Arrowhead Towne Center$15,411 $17,716Camelback Colonnade2,416 —Deptford Mall(15) (19)Fashion Outlets of Niagara Falls USA6,574 7,270FlatIron Crossing— 5,232Great Northern Mall(5) (28)Valley Mall(241) (307) $24,140 $29,864

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	140,716,198	137,507,010
Common stock, shares outstanding (in shares)	140,716,198	137,507,010

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (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:	'		'		'		'
Minimum rents	$150,638		$112,221		$438,625		$335,713
Percentage rents	4,137		4,838		10,953		10,806
Tenant recoveries	90,033		64,713		256,366		186,661
Management Companies	10,742		9,858		31,193		30,730
Other	11,006		12,462		35,770		28,988
Total revenues	266,556		204,092		772,907		592,898
Expenses:	'		'		'		'
Shopping center and operating expenses	86,184		63,246		248,933		185,332
Management Companies' operating expenses	23,036		20,706		69,003		66,953
REIT general and administrative expenses	5,955		5,063		18,672		15,235
Depreciation and amortization	91,346		68,737		272,696		207,177
Total expenses before interest	206,521		157,752		609,304		474,697
Interest expense:	'		'		'		'
Related parties	3,745		3,815		11,289		11,588
Other	48,911		37,750		147,430		113,706
Total interest expense	52,656		41,565		158,719		125,294
Loss (gain) on early extinguishment of debt, net	6		0		-1,938		0
Total expenses	259,183		199,317		766,085		599,991
Equity in income of unconsolidated joint ventures	35,161		19,315		145,477		68,624
Co-venture expense	-2,053		-2,066		-6,232		-4,462
Income tax benefit	543		934		2,263		2,159
Gain on remeasurement, sale or write down of assets, net	1,763		21,967		5,793		39,938
Income from continuing operations	42,787		44,925		154,123		99,166
Discontinued operations:	'		'		'		'
(Loss) gain on the disposition of assets, net	-1,281		-256		140,631		75,571
(Loss) income from discontinued operations	-681		2,606		3,416		5,357
Total (loss) income from discontinued operations	-1,962		2,350		144,047		80,928
Net income	40,825		47,275		298,170		180,094
Less net income attributable to noncontrolling interests	2,702		3,382		22,958		16,915
Net income attributable to the Company	$38,123		$43,893		$275,212		$163,179
Earnings per common share attributable to Company—basic: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.28		$0.31		$1		$0.66
Discontinued operations	($0.01)		$0.02		$0.97		$0.56
Net income attributable to common stockholders	$0.27		$0.33		$1.97		$1.22
Earnings per common share attributable to Company—diluted: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.28		$0.31		$1		$0.66
Discontinued operations	($0.01)		$0.02		$0.97		$0.56
Net income attributable to common stockholders	$0.27		$0.33		$1.97		$1.22
Weighted average number of common shares outstanding: (in shares)	'		'		'		'
Basic	140,712		134,220		139,219		133,091
Diluted	140,773	[1]	134,330	[1]	139,320	[1]	133,187	[1]
[1]	The convertible senior notes ("Senior Notes") are excluded from diluted EPS for the nine months ended September 30, 2012 as their impact was antidilutive. The Senior Notes were paid off in full on March 15, 2012 (See Note 10—Bank and Other Notes Payable).Diluted EPS excludes 184,304 convertible preferred units for the three months ended September 30, 2013 and 2012, and 184,304 and 197,183 convertible preferred units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.Diluted EPS excludes 9,621,313 and 10,769,552 Operating Partnership units ("OP Units") for the three months ended September 30, 2013 and 2012, respectively, and 9,920,197 and 11,069,129 OP Units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.

CONSOLIDATED_STATEMENT_OF_EQUI

CONSOLIDATED STATEMENT OF EQUITY (USD $)	Total	Total Stockholders' Equity	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Noncontrolling Interests
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2012	$3,416,251	$3,077,529	$1,375	$3,715,895	($639,741)	$338,722
Balance (in shares) at Dec. 31, 2012	137,507,010	'	137,507,010	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'
Net income	298,170	275,212	'	'	275,212	22,958
Share and unit-based compensation plans (in shares)	'	'	86,425	'	'	'
Share and unit-based compensation plans	16,757	16,757	'	16,757	'	'
Employee stock purchases (in shares)	'	'	8,941	'	'	'
Employee stock purchases	459	459	'	459	'	'
Stock offerings, net (in shares)	'	'	2,456,956	'	'	'
Stock offerings, net	171,121	171,121	25	171,096	'	'
Distributions paid ($1.74) per share	-241,935	-241,935	'	'	-241,935	'
Distributions to noncontrolling interests	-19,207	'	'	'	'	-19,207
Contributions from noncontrolling interests	18,066	'	'	'	'	18,066
Other	-3,890	-3,890	'	-3,890	'	'
Conversion of noncontrolling interests to common shares (in shares)	'	'	656,866	'	'	'
Conversion of noncontrolling interests to common shares	'	12,984	7	12,977	'	-12,984
Redemption of noncontrolling interests	-1,022	-703	'	-703	'	-319
Adjustment of noncontrolling interest in Operating Partnership	'	-10,915	'	-10,915	'	10,915
Balance at Sep. 30, 2013	$3,654,770	$3,296,619	$1,407	$3,901,676	($606,464)	$358,151
Balance (in shares) at Sep. 30, 2013	140,716,198	'	140,716,198	'	'	'

CONSOLIDATED_STATEMENT_OF_EQUI1

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]	'
Distributions paid, per share (in dollars per share)	$1.74

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	$298,170	$180,094
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Gain on early extinguishment of debt, net	-1,938	0
Gain on remeasurement, sale or write down of assets, net	-5,793	-39,938
Gain on the disposition of assets, net from discontinued operations	-140,631	-75,571
Depreciation and amortization	285,933	234,410
Amortization of net (premium) discount on mortgages, bank and other notes payable	-5,502	661
Amortization of share and unit-based plans	13,913	8,950
Provision for doubtful accounts	3,231	2,200
Income tax benefit	-2,263	-2,159
Equity in income of unconsolidated joint ventures	-145,477	-68,624
Distributions of income from unconsolidated joint ventures	8,538	14,682
Co-venture expense	6,232	4,462
Changes in assets and liabilities, net of acquisitions and dispositions:	'	'
Tenant and other receivables	-1,887	-1,336
Other assets	19,786	23,114
Due from affiliates	-1,901	-4,208
Accounts payable and accrued expenses	10,355	16,272
Other accrued liabilities	-11,910	-36,830
Net cash provided by operating activities	328,856	256,179
Cash flows from investing activities:	'	'
Acquisitions of property	-492,577	-70,925
Development, redevelopment, expansion and renovation of properties	-158,682	-84,283
Property improvements	-21,752	-24,846
Issuance of notes receivable	-13,330	-12,500
Proceeds from notes receivable	8,347	0
Proceeds from maturities of marketable securities	23,769	788
Deferred leasing costs	-21,774	-20,875
Distributions from unconsolidated joint ventures	665,374	217,393
Contributions to unconsolidated joint ventures	-135,477	-47,513
Collection of/loans to unconsolidated joint ventures, net	609	661
Proceeds from sale of assets	327,059	130,691
Restricted cash	52,892	2,886
Net cash provided by investing activities	234,458	91,477
Cash flows from financing activities:	'	'
Proceeds from mortgages, bank and other notes payable	2,239,853	1,580,885
Payments on mortgages, bank and other notes payable	-2,694,945	-1,813,271
Deferred financing costs	-11,053	-4,639
Net proceeds from stock offerings	171,121	175,869
Proceeds from share and unit-based plans	558	656
Exercise of stock warrants	0	-3,448
Redemption of noncontrolling interests	-1,022	-71
Contribution from noncontrolling interests	4,127	918
Dividends and distributions	-261,142	-240,635
Distributions to co-venture partner	-14,496	-34,615
Net cash used in financing activities	-566,999	-338,351
Net (decrease) increase in cash and cash equivalents	-3,685	9,305
Cash and cash equivalents, beginning of period	65,793	67,248
Cash and cash equivalents, end of period	62,108	76,553
Supplemental cash flow information:	'	'
Cash payments for interest, net of amounts capitalized	164,673	147,946
Non-cash transactions:	'	'
Accrued development costs included in accounts payable and accrued expenses and other accrued liabilities	23,666	30,591
Noncash or Part Noncash Acquisition, Debt Assumed	109,858	0
Assumption of mortgage note payable and other liabilities from unconsolidated joint ventures	54,271	0
Mortgage notes payable settled by deed-in-lieu of foreclosure	84,000	185,000
Application of deposit to acquire property	30,000	0
Conversion of noncontrolling interests to common shares	$12,984	$11,978

Organization

Organization:	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization:	'
	Organization:
	The Macerich Company (the "Company") is involved in the acquisition, ownership, development, redevelopment, management and leasing of regional and community/power shopping centers (the "Centers") located throughout the United States.
	The Company commenced operations effective with the completion of its initial public offering on March 16, 1994. As of September 30, 2013, the Company was the sole general partner of, and held a 94% ownership interest in, The Macerich Partnership, L.P. (the "Operating Partnership"). The Company was organized to qualify as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended (the "Code").
	The property management, leasing and redevelopment of the Company's portfolio is provided by the Company's management companies, Macerich Property Management Company, LLC, a single member Delaware limited liability company, Macerich Management Company, a California corporation, Macerich Arizona Partners LLC, a single member Arizona limited liability company, Macerich Arizona Management LLC, a single member Delaware limited liability company, Macerich Partners of Colorado LLC, a Colorado limited liability company, MACW Mall Management, Inc., a New York corporation, and MACW Property Management, LLC, a single member New York limited liability company. All seven of the management companies are collectively referred to herein as the "Management Companies."
	All references to the Company in this Quarterly Report on Form 10-Q include the Company, those entities owned or controlled by the Company and predecessors of the Company, unless the context indicates otherwise.

Summary_of_Significant_Account

Summary of Significant Accounting Policies:	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies:	'
	Summary of Significant Accounting Policies:
	Basis of Presentation:
	The accompanying consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. They do not include all of the information and footnotes required by GAAP for complete financial statements and have not been audited by independent public accountants.
	The accompanying consolidated financial statements include the accounts of the Company and the Operating Partnership. Investments in entities in which the Company has a controlling financial interest or entities that meet the definition of a variable interest entity in which the Company has, as a result of ownership, contractual or other financial interests, both the power to direct activities that most significantly impact the economic performance of the variable interest entity and the obligation to absorb losses or the right to receive benefits that could potentially be significant to the variable interest entity are consolidated; otherwise they are accounted for under the equity method of accounting and are reflected as investments in unconsolidated joint ventures.
	All intercompany accounts and transactions have been eliminated in the consolidated financial statements.
	The unaudited interim consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2012. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the consolidated financial statements for the interim periods have been made. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and 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 period. Actual results could differ from those estimates. The accompanying consolidated balance sheet as of December 31, 2012 has been derived from the audited financial statements, but does not include all disclosures required by GAAP.

Earnings_per_Share_EPS

Earnings per Share ("EPS"):	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Earnings per Share ("EPS"):	'
	Earnings per Share ("EPS"):
	The following table reconciles the numerator and denominator used in the computation of earnings per share for the three and nine months ended September 30, 2013 and 2012 (shares in thousands):
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
		2013			2012			2013			2012
	Numerator
	Income from continuing operations	$	42,787		$	44,925		$	154,123		$	99,166
	(Loss) income from discontinued operations	(1,962		)	2,350			144,047			80,928
	Net income attributable to noncontrolling interests	(2,702		)	(3,382		)	(22,958		)	(16,915		)
	Net income attributable to the Company	38,123			43,893			275,212			163,179
	Allocation of earnings to participating securities	(80		)	(63		)	(257		)	(443		)
	Numerator for basic and diluted earnings per share—net income attributable to common stockholders	$	38,043		$	43,830		$	274,955		$	162,736
	Denominator
	Denominator for basic earnings per share—weighted average number of common shares outstanding	140,712			134,220			139,219			133,091
	Effect of dilutive securities:(1)
	Stock warrants	—			64			—			78
	Share and unit-based compensation plans	61			46			101			18
	Denominator for diluted earnings per share—weighted average number of common shares outstanding	140,773			134,330			139,320			133,187
	Earnings per common share—basic:
	Income from continuing operations	$	0.28		$	0.31		$	1		$	0.66
	Discontinued operations	(0.01		)	0.02			0.97			0.56
	Net income attributable to common stockholders	$	0.27		$	0.33		$	1.97		$	1.22
	Earnings per common share—diluted:
	Income from continuing operations	$	0.28		$	0.31		$	1		$	0.66
	Discontinued operations	(0.01		)	0.02			0.97			0.56
	Net income attributable to common stockholders	$	0.27		$	0.33		$	1.97		$	1.22
	-1	The convertible senior notes ("Senior Notes") are excluded from diluted EPS for the nine months ended September 30, 2012 as their impact was antidilutive. The Senior Notes were paid off in full on March 15, 2012 (See Note 10—Bank and Other Notes Payable).
	Diluted EPS excludes 184,304 convertible preferred units for the three months ended September 30, 2013 and 2012, and 184,304 and 197,183 convertible preferred units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.
	Diluted EPS excludes 9,621,313 and 10,769,552 Operating Partnership units ("OP Units") for the three months ended September 30, 2013 and 2012, respectively, and 9,920,197 and 11,069,129 OP Units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.

Investments_in_Unconsolidated_

Investments in Unconsolidated Joint Ventures:	9 Months Ended
	Sep. 30, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Investments in Unconsolidated Joint Ventures:	'
	Investments in Unconsolidated Joint Ventures:
	During 2013 and 2012, the Company made the following investments and dispositions relating to its unconsolidated joint ventures:
	On March 30, 2012, the Company sold its 50% ownership interest in Chandler Village Center, a 273,000 square foot community center in Chandler, Arizona, for a total sales price of $14,795, resulting in a gain on sale of assets of $8,185 that was included in gain on remeasurement, sale or write down of assets, net during the nine months ended September 30, 2012. The sales price was funded by a cash payment of $6,045 and the assumption of the Company's share of the mortgage note payable on the property of $8,750. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On March 30, 2012, the Company sold its 50% ownership interest in Chandler Festival, a 500,000 square foot community center in Chandler, Arizona, for a total sales price of $30,975, resulting in a gain on sale of assets of $12,347 that was included in gain on remeasurement, sale or write down of assets, net during the nine months ended September 30, 2012. The sales price was funded by a cash payment of $16,183 and the assumption of the Company's share of the mortgage note payable on the property of $14,792. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On March 30, 2012, the Company's joint venture in SanTan Village Power Center, a 491,000 square foot community center in Gilbert, Arizona, sold the property for $54,780, resulting in a gain on sale of assets to the joint venture of $23,294. The cash proceeds from the sale were used to pay off the $45,000 mortgage loan on the property and the remaining $9,780 was distributed to the partners. The Company's share of the gain recognized was $11,502, which was included in equity in income of unconsolidated joint ventures during the nine months ended September 30, 2012, offset in part by $3,565, which was included in net income attributable to noncontrolling interests during the nine months ended September 30, 2012. The Company used its share of the proceeds to pay down its line of credit and for general corporate purposes.
	On May 31, 2012, the Company sold its 50% ownership interest in Chandler Gateway, a 260,000 square foot community center in Chandler, Arizona, for a total sales price of $14,315, resulting in a gain on sale of assets of $3,365 that was included in gain on remeasurement, sale or write down of assets, net during the nine months ended September 30, 2012. The sales price was funded by a cash payment of $4,921 and the assumption of the Company's share of the mortgage note payable on the property of $9,394. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On August 10, 2012, the Company was bought out of its ownership interest in NorthPark Center, a 1,946,000 square foot regional shopping center in Dallas, Texas, for $118,810, resulting in a gain of $24,590 that was included in gain on remeasurement, sale or write down of assets during the three and nine months ended September 30, 2012. The Company used the cash proceeds to pay down its line of credit.
	On October 3, 2012, the Company acquired the remaining 75% ownership interest in FlatIron Crossing, a 1,435,000 square foot regional shopping center in Broomfield, Colorado, that it did not own for $310,397. The purchase price was funded by a cash payment of $195,900 and the assumption of the third party's share of the mortgage note payable on the property of $114,497. Prior to the acquisition, the Company had accounted for its investment in FlatIron Crossing under the equity method. Since the date of acquisition, the Company has included FlatIron Crossing in its consolidated financial statements (See Note 14—Acquisitions).
	On October 26, 2012, the Company acquired the remaining 33.3% ownership interest in Arrowhead Towne Center, a 1,196,000 square foot regional shopping center in Glendale, Arizona, that it did not own for $144,400. The purchase price was funded by a cash payment of $69,025 and the assumption of the third party's pro rata share of the mortgage note payable on the property of $75,375. Prior to the acquisition, the Company had accounted for its investment in Arrowhead Towne Center under the equity method. Since the date of acquisition, the Company has included Arrowhead Towne Center in its consolidated financial statements (See Note 14—Acquisitions).
	On May 29, 2013, the Company's joint venture in Pacific Premier Retail LP sold Redmond Town Center Office, a 582,000 square foot office building in Redmond, Washington, for $185,000, resulting in a gain on the sale of assets of $89,155 to the joint venture. The Company's share of the gain was $44,424, which was included in equity in income of unconsolidated joint ventures during the nine months ended September 30, 2013. The Company used its share of the proceeds to pay down its line of credit and for general corporate purposes.
	On June 12, 2013, the Company's joint venture in Pacific Premier Retail LP sold Kitsap Mall, a 846,000 square foot regional shopping center in Silverdale, Washington, for $127,000, resulting in a gain on the sale of assets of $55,155 to the joint venture. The Company's share of the gain was $28,129, which was included in equity in income of unconsolidated joint ventures during the nine months ended September 30, 2013. The Company used its share of the proceeds to pay down its line of credit and for general corporate purposes.
	On August 1, 2013, the Company's joint venture in Pacific Premier Retail LP sold Redmond Town Center, a 695,000 square foot community center in Redmond, Washington, for $127,000, resulting in a gain on the sale of assets of $38,471 to the joint venture. The Company's share of the gain was $18,263, which was included in equity in income of unconsolidated joint ventures during the three and nine months ended September 30, 2013. The Company used its share of the proceeds to pay down its line of credit and for general corporate purposes.
	On September 17, 2013, the Company’s joint venture in Camelback Colonnade, a 619,000 square foot community center in Phoenix, Arizona, was restructured. As a result of the restructuring, the Company’s ownership interest in Camelback Colonnade decreased from 73.2% to 67.5%. Prior to the restructuring, the Company had accounted for its investment in Camelback Colonnade under the equity method of accounting due to substantive participation rights held by the outside partners. Upon completion of the restructuring, these substantive participation rights were terminated and the Company obtained voting control of the joint venture. This transaction is referred to herein as the "Camelback Colonnade Restructuring". Since the date of the restructuring, the Company has included Camelback Colonnade in its consolidated financial statements (See Note 14—Acquisitions).
	Combined condensed balance sheets and statements of operations are presented below for all unconsolidated joint ventures.
	Combined Condensed Balance Sheets of Unconsolidated Joint Ventures:
		September 30,			December 31,
		2013			2012
	Assets(1):
	Properties, net	$	3,454,127		$	3,653,631
	Other assets	316,985			411,862
	Total assets	$	3,771,112		$	4,065,493
	Liabilities and partners' capital(1):
	Mortgage notes payable(2)	$	3,648,498		$	3,240,723
	Other liabilities	196,927			148,711
	Company's (deficit) capital	(72,153		)	304,477
	Outside partners' (deficit) capital	(2,160		)	371,582
	Total liabilities and partners' capital	$	3,771,112		$	4,065,493
	Investments in unconsolidated joint ventures:
	Company's (deficit) capital	$	(72,153	)	$	304,477
	Basis adjustment(3)	521,151			516,833
		$	448,998		$	821,310
	Assets—Investments in unconsolidated joint ventures	$	706,450		$	974,258
	Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(257,452		)	(152,948		)
		$	448,998		$	821,310
	-1	These amounts include the assets and liabilities of the following joint ventures as of September 30, 2013 and December 31, 2012:
		Pacific			Tysons
		Premier			Corner LLC
		Retail LP
	As of September 30, 2013:
	Total Assets	$	776,186		$	467,632
	Total Liabilities	$	818,222		$	337,804
	As of December 31, 2012:
	Total Assets	$	1,039,742		$	409,622
	Total Liabilities	$	942,370		$	329,145
	-2	Certain mortgage notes payable could become recourse debt to the Company should the joint venture be unable to discharge the obligations of the related debt. As of September 30, 2013 and December 31, 2012, a total of $47,040 and $51,171, respectively, could become recourse debt to the Company. As of September 30, 2013 and December 31, 2012, the Company had indemnity agreements from joint venture partners for $21,270 of the guaranteed amount.
	Included in mortgage notes payable are amounts due to affiliates of Northwestern Mutual Life ("NML") of $715,332 and $436,857 as of September 30, 2013 and December 31, 2012, respectively. NML is considered a related party because it is a joint venture partner with the Company in Macerich Northwestern Associates—Broadway Plaza. Interest expense incurred on these borrowings amounted to $7,920 and $10,980 for the three months ended September 30, 2013 and 2012, respectively, and $21,717 and $32,974 for the nine months ended September 30, 2013 and 2012, respectively.
	-3	The Company amortizes the difference between the cost of its investments in unconsolidated joint ventures and the book value of the underlying equity into income on a straight-line basis consistent with the lives of the underlying assets. The amortization of this difference was $3,860 and $3,136 for the three months ended September 30, 2013 and 2012, respectively, and $9,753 and $6,211 for the nine months ended September 30, 2013 and 2012, respectively.
	Combined Condensed Statements of Operations of Unconsolidated Joint Ventures:
		Pacific			Tysons			Other			Total
		Premier			Corner			Joint
		Retail LP			LLC			Ventures
	Three Months Ended September 30, 2013
	Revenues:
	Minimum rents	$	27,426		$	15,344		$	59,940		$	102,710
	Percentage rents	572			(12		)	2,938			3,498
	Tenant recoveries	12,115			11,304			28,361			51,780
	Other	1,086			510			8,143			9,739
	Total revenues	41,199			27,146			99,382			167,727
	Expenses:
	Shopping center and operating expenses	12,231			9,818			35,926			57,975
	Interest expense	10,251			3,801			21,062			35,114
	Depreciation and amortization	9,067			4,568			22,688			36,323
	Total operating expenses	31,549			18,187			79,676			129,412
Gain (loss) on remeasurement, sale or write down of assets, net	38,432			—			(328		)	38,104
Gain on early extinguishment of debt	—			14			—			14
Net income	$	48,082		$	8,973		$	19,378		$	76,433
Company's equity in net income	$	21,567		$	2,919		$	10,675		$	35,161
Three Months Ended September 30, 2012
Revenues:
Minimum rents	$	32,718		$	15,847		$	75,809		$	124,374
Percentage rents	837			233			4,214			5,284
Tenant recoveries	14,091			11,340			37,663			63,094
Other	1,138			618			9,415			11,171
Total revenues	48,784			28,038			127,101			203,923
Expenses:
Shopping center and operating expenses	15,075			8,760			46,153			69,988
Interest expense	12,904			2,838			32,338			48,080
Depreciation and amortization	10,905			5,094			28,784			44,783
Total operating expenses	38,884			16,692			107,275			162,851
Loss on remeasurement, sale or write down of assets, net	—			—			(28		)	(28		)
Net income	$	9,900		$	11,346		$	19,798		$	41,044
Company's equity in net income	$	5,035		$	4,372		$	9,908		$	19,315
	Pacific			Tysons			Other			Total
	Premier			Corner			Joint
	Retail LP			LLC			Ventures
Nine Months Ended September 30, 2013
Revenues:
Minimum rents	$	91,779		$	46,526		$	180,870		$	319,175
Percentage rents	2,155			734			7,176			10,065
Tenant recoveries	40,555			34,025			82,261			156,841
Other	3,980			2,080			26,923			32,983
Total revenues	138,469			83,365			297,230			519,064
Expenses:
Shopping center and operating expenses	40,948			26,819			106,887			174,654
Interest expense	33,118			7,825			66,108			107,051
Depreciation and amortization	30,697			13,499			67,808			112,004
Total operating expenses	104,763			48,143			240,803			393,709
Gain on remeasurement, sale or write down of assets, net	182,781			—			373			183,154
Gain on early extinguishment of debt	—			14			—			14
Net income	$	216,487		$	35,236		$	56,800		$	308,523
Company's equity in net income	$	105,684		$	12,957		$	26,836		$	145,477
Nine Months Ended September 30, 2012
Revenues:
Minimum rents	$	98,812		$	47,149		$	251,599		$	397,560
Percentage rents	2,571			866			10,531			13,968
Tenant recoveries	41,967			32,969			121,825			196,761
Other	3,665			1,964			27,775			33,404
Total revenues	147,015			82,948			411,730			641,693
Expenses:
Shopping center and operating expenses	43,385			25,834			155,014			224,233
Interest expense	39,405			8,902			108,784			157,091
Depreciation and amortization	31,926			15,279			91,214			138,419
Total operating expenses	114,716			50,015			355,012			519,743
(Loss) gain on remeasurement, sale or write down of assets, net	(10		)	—			22,948			22,938
Net income	$	32,289		$	32,933		$	79,666		$	144,888
Company's equity in net income	$	16,422		$	12,721		$	39,481		$	68,624
Significant accounting policies used by the unconsolidated joint ventures are similar to those used by the Company.

Property

Property:	9 Months Ended
	Sep. 30, 2013
Property, Plant and Equipment [Abstract]	'
Property:	'
	Property:
	Property consists of the following:
		September 30,			December 31,
		2013			2012
	Land	$	1,751,611		$	1,572,621
	Buildings and improvements	6,642,696			6,417,674
	Tenant improvements	554,528			496,203
	Equipment and furnishings	153,146			149,959
	Construction in progress	239,106			376,249
		9,341,087			9,012,706
	Less accumulated depreciation	(1,607,158		)	(1,533,160		)
		$	7,733,929		$	7,479,546
	Depreciation expense was $71,136 and $55,086 for the three months ended September 30, 2013 and 2012, respectively, and $207,877 and $164,369 for the nine months ended September 30, 2013 and 2012, respectively.
	The gain on remeasurement, sale or write down of assets, net includes the write off of development costs of $126 and $2,623 during the three months ended September 30, 2013 and 2012, respectively, and $1,497 and $8,549 during the nine months ended September 30, 2013 and 2012, respectively.
	The gain on remeasurement, sale or write down of assets, net for the three and nine months ended September 30, 2013 includes a remeasurement gain of $36,341 on the Camelback Colonnade Restructuring (See Note 14—Acquisitions) offset in part by an impairment loss of $34,452 due to the reduction in the estimated holding period of the long-lived assets of Great Northern Mall and two former Mervyn's stores.
	In addition, the gain on remeasurement, sale or write down of assets, net includes the gain on the sale of assets of $5,401 during the nine months ended September 30, 2013.

Marketable_Securities

Marketable Securities:	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Marketable Securities:	'
	Marketable Securities:
	Marketable securities consist of the following:
		September 30,		December 31,
		2013		2012
	Government debt securities, at par value	$	—	$	23,769
	Less discount	—		(102		)
		—		23,667
	Unrealized gain	—		685
	Fair value (Level 1 measurement)	$	—	$	24,352
	The proceeds from maturities and interest receipts from the marketable securities were restricted to the service of the Greeley Note (See Note 10—Bank and Other Notes Payable). On September 1, 2013, the Greeley note was paid off in full.

Tenant_and_Other_Receivables_n

Tenant and Other Receivables, net:	9 Months Ended
	Sep. 30, 2013
Loans and Leases Receivable Disclosure [Abstract]	'
Tenant and Other Receivables, net:	'
	Tenant and Other Receivables, net:
	Included in tenant and other receivables, net, is an allowance for doubtful accounts of $2,672 and $2,374 at September 30, 2013 and December 31, 2012, respectively. Also included in tenant and other receivables, net, are accrued percentage rents of $2,180 and $9,168 at September 30, 2013 and December 31, 2012, respectively, and deferred rent receivable due to straight-line rent adjustments of $53,523 and $49,129 at September 30, 2013 and December 31, 2012, respectively.
	Tenant and other receivables, net includes a note receivable from J&R Holdings XV, LLC ("Pederson") that bears interest at an effective rate of 16.3% and matures on December 31, 2013. Pederson is considered a related party because it has an ownership interest in Promenade at Casa Grande. The note is secured by Pederson's interest in Promenade at Casa Grande. Interest income on the note was $156 and $130 for the three months ended September 30, 2013 and 2012, respectively, and $464 and $388 for the nine months ended September 30, 2013 and 2012, respectively. The balance on the note, including accrued interest, at September 30, 2013 and December 31, 2012 was $4,427 and $3,963, respectively.
	Tenant and other receivables, net also included a note receivable that was secured by a deed of trust, bore interest at 5.5% and was to mature on March 31, 2031. This loan was collected in full on August 23, 2013. The balance on the loan at December 31, 2012 was $8,502.

Deferred_Charges_and_Other_Ass

Deferred Charges and Other Assets, net:	9 Months Ended
	Sep. 30, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
Deferred Charges and Other Assets, net:	'
	Deferred Charges and Other Assets, net:
	Deferred charges and other assets, net, consist of the following:
		September 30,			December 31,
		2013			2012
	Leasing	$	226,891		$	234,498
	Financing	52,038			42,868
	Intangible assets:
	In-place lease values	199,274			175,735
	Leasing commissions and legal costs	50,020			46,419
	Above-market leases	116,717			118,033
	Deferred tax assets	32,020			33,414
	Deferred compensation plan assets	29,126			24,670
	Acquisition deposit	—			30,000
	Other assets	68,180			72,811
		774,266			778,448
	Less accumulated amortization(1)	(227,684		)	(213,318		)
		$	546,582		$	565,130
	-1	Accumulated amortization includes $80,747 and $62,792 relating to in-place lease values, leasing commissions and legal costs at September 30, 2013 and December 31, 2012, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $12,228 and $6,323 for the three months ended September 30, 2013 and 2012, respectively, and $40,611 and $22,529 for the nine months ended September 30, 2013 and 2012, respectively.
	The allocated values of above-market leases and below-market leases consist of the following:
		September 30,			December 31,
		2013			2012
	Above-Market Leases
	Original allocated value	$	116,717		$	118,033
	Less accumulated amortization	(43,047		)	(46,361		)
		$	73,670		$	71,672
	Below-Market Leases(1)
	Original allocated value	$	186,600		$	164,489
	Less accumulated amortization	(74,056		)	(77,131		)
		$	112,544		$	87,358
	-1	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable

Mortgage Notes Payable:	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Mortgage Notes Payable:	'
	Mortgage Notes Payable:
	Mortgage notes payable at September 30, 2013 and December 31, 2012 consist of the following:
			Carrying Amount of Mortgage Notes(1)
			September 30, 2013					December 31, 2012
	Property Pledged as Collateral		Related Party			Other		Related Party		Other		Effective Interest		Monthly		Maturity
												Rate(2)		Debt		Date(4)
														Service(3)
	Arrowhead Towne Center		$	—		$	237,832	$	—	$	243,176	2.76	%	$	1,131	2018
	Camelback Colonnade(5)		—			49,416		—		—		2.16	%	178		2015
	Chandler Fashion Center(6)		—			200,000		—		200,000		3.77	%	625		2019
	Chesterfield Towne Center		—			110,000		—		110,000		4.8	%	573		2022
	Danbury Fair Mall		117,810			117,809		119,823		119,823		5.53	%	1,538		2020
	Deptford Mall		—			202,556		—		205,000		3.76	%	947		2023
	Deptford Mall		—			14,616		—		14,800		6.46	%	101		2016
	Eastland Mall		—			168,000		—		168,000		5.79	%	811		2016
	Fashion Outlets of Chicago(7)		—			81,472		—		9,165		2.98	%	182		2017
	Fashion Outlets of Niagara Falls USA		—			124,682		—		126,584		4.89	%	727		2020
	Fiesta Mall(8)		—			—		—		84,000		—		—		—
	Flagstaff Mall		—			37,000		—		37,000		5.03	%	151		2015
	FlatIron Crossing(9)		—			—		—		173,561		—		—		—
	Freehold Raceway Mall(6)		—			232,900		—		232,900		4.2	%	805		2018
	Fresno Fashion Fair		79,701			79,701		80,601		80,602		6.76	%	1,104		2015
	Great Northern Mall		—			35,719		—		36,395		5.19	%	234		2013
	Green Acres Mall(10)		—			321,407		—		—		3.61	%	1,447		2021
	Kings Plaza Shopping Center(11)		—			492,954		—		354,000		3.67	%	2,229		2019
	Northgate Mall(12)		—			64,000		—		64,000		3.06	%	130		2017
	Oaks, The		—			215,224		—		218,119		4.14	%	1,064		2022
	Pacific View		—			136,478		—		138,367		4.08	%	668		2022
	Paradise Valley Mall(13)		—			—		—		81,000		—		—		—
	Promenade at Casa Grande(14)		—			64,226		—		73,700		5.21	%	245		2013
	Salisbury, Centre at		—			115,000		—		115,000		5.83	%	555		2016
	Santa Monica Place		—			236,701		—		240,000		2.99	%	1,004		2018
	SanTan Village Regional Center(15)		—			137,321		—		138,087		3.14	%	589		2019
	South Plains Mall		—			100,221		—		101,340		6.58	%	648		2015
	South Towne Center(16)		—			—		—		85,247		—		—		—
	Towne Mall		—			23,092		—		23,369		4.48	%	117		2022
	Tucson La Encantada		73,204			—		74,185		—		4.23	%	368		2022
	Twenty Ninth Street(17)		—			107,000		—		107,000		3.02	%	251		2016
	Valley Mall		—			42,345		—		42,891		5.85	%	280		2016
	Valley River Center		—			120,000		—		120,000		5.59	%	558		2016
	Victor Valley, Mall of(18)		—			90,000		—		90,000		2.74	%	183		2014
	Vintage Faire Mall(16)		—			99,431		—		135,000		5.81	%	586		2015
	Westside Pavilion		—			152,797		—		154,608		4.49	%	783		2022
	Wilton Mall(19)		—			—		—		40,000		—		—		—
			$	270,715		$	4,209,900	$	274,609	$	4,162,734
	-1	The mortgage notes payable balances include the unamortized debt premiums (discounts). Debt premiums (discounts) represent the excess (deficiency) of the fair value of debt over (under) the principal value of debt assumed in various acquisitions and are amortized to interest expense over the remaining term of the related debt in a manner that approximates the effective interest method.
	Debt premiums (discounts) consist of the following:
	Property Pledged as Collateral	September 30,			December 31,
		2013			2012
	Arrowhead Towne Center	$	15,411		$	17,716
	Camelback Colonnade	2,416			—
	Deptford Mall	(15		)	(19		)
	Fashion Outlets of Niagara Falls USA	6,574			7,270
	FlatIron Crossing	—			5,232
	Great Northern Mall	(5		)	(28		)
	Valley Mall	(241		)	(307		)
		$	24,140		$	29,864
	-2	The interest rate disclosed represents the effective interest rate, including the debt premiums (discounts) and deferred finance costs.
	-3	The monthly debt service represents the payment of principal and interest.
	-4	The maturity date assumes that all extension options are fully exercised and that the Company does not opt to refinance the debt prior to these dates. These extension options are at the Company's discretion, subject to certain conditions, which the Company believes will be met.
	-5	On September 17, 2013, the Company obtained control of the consolidated joint venture as a result of the Camelback Colonnade Restructuring (See Note 14—Acquisitions). The loan on the property bears interest at an effective rate of 2.16% and matures on October 12, 2015.
	-6	A 49.9% interest in the loan has been assumed by a third party in connection with a co-venture arrangement (See Note 11—Co-Venture Arrangement).
	-7	The construction loan on the property allows for borrowings up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At September 30, 2013 and December 31, 2012, the total interest rate was 2.98% and 3.00%, respectively.
-8	On September 30, 2013, the Company conveyed the property to the lender by a deed-in-lieu of foreclosure. As a result, the Company has been discharged from this non-recourse loan (See Note 15—Discontinued Operations).
-9	On June 4, 2013, the loan was paid off in full, which resulted in a gain of $2,791 on the early extinguishment of debt.
-10	On January 24, 2013, in connection with the Company's acquisition of Green Acres Mall (See Note 14—Acquisitions), the Company placed a new loan on the property that allowed for borrowings of up to $325,000, bears interest at an effective interest rate of 3.61% and matures on February 3, 2021. Concurrent with the acquisition, the Company borrowed $100,000 on the loan. On January 31, 2013, the Company exercised its option to borrow an additional $225,000 on the loan.
-11	On January 3, 2013, the Company exercised its option to borrow an additional $146,000 on the loan.
-12	The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At September 30, 2013 and December 31, 2012, the total interest rate was 3.06% and 3.09%, respectively.
-13	On August 26, 2013, the loan was paid off in full.
-14	The loan bears interest at LIBOR plus 4.0% with a LIBOR rate floor of 0.50% and matures on December 30, 2013. At September 30, 2013 and December 31, 2012, the total interest rate was 5.21%.
-15	On May 30, 2013, the consolidated joint venture replaced the existing loan on the property with a new $138,000 loan that bears interest at 3.14% and matures on June 1, 2019.
-16	On April 30, 2013, the existing loan on Vintage Faire Mall was paid off in full, resulting in a loss of $853 on the early extinguishment of debt. Concurrently, the loan on South Towne Center was assumed by Vintage Faire Mall. An additional $15,200 loan was added to the assumed loan that bears interest at 2.50% and matures on November 5, 2015.
-17	The loan bears interest at LIBOR plus 2.63% and matures on January 18, 2016. At September 30, 2013 and December 31, 2012, the total interest rate was 3.02% and 3.04%, respectively.
-18	The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At September 30, 2013 and December 31, 2012, the total interest rate was 2.74% and 2.12%, respectively.
-19	On August 1, 2013, the loan was paid off in full.
Most of the mortgage loan agreements contain a prepayment penalty provision for the early extinguishment of the debt.
Most of the Company's mortgage notes payable are secured by the properties on which they are placed and are non-recourse to the Company. As of September 30, 2013 and December 31, 2012, a total of $205,555 and $213,466, respectively, of the mortgage notes payable could become recourse to the Company. The Company had indemnity agreements from consolidated joint venture partners for $21,263 and $28,208 of the guaranteed amounts at September 30, 2013 and December 31, 2012, respectively.
The Company expects that all loan maturities during the next twelve months will be refinanced, restructured, extended and/or paid-off from the Company's line of credit or with cash on hand.
Total interest expense capitalized was $2,887 and $2,984 during the three months ended September 30, 2013 and 2012, respectively, and $8,227 and $7,899 during the nine months ended September 30, 2013 and 2012, respectively.
Related party mortgage notes payable are amounts due to affiliates of NML. See Note 17—Related Party Transactions for interest expense associated with loans from NML.
The fair value of mortgage notes payable at September 30, 2013 and December 31, 2012 was $4,558,549 and $4,567,658, respectively, based on current interest rates for comparable loans. The method for computing fair value (Level 2 measurement) was determined using a present value model and an interest rate that included a credit value adjustment based on the estimated value of the property that serves as collateral for the underlying debt.

Bank_and_Other_Notes_Payable

Bank and Other Notes Payable:	9 Months Ended
	Sep. 30, 2013
Bank and Other Notes Payable:	'
Bank and Other Notes Payable:	'
	Bank and Other Notes Payable:
	Bank and other notes payable consist of the following:
	Senior Notes:
	On March 16, 2007, the Company issued $950,000 in Senior Notes that matured on March 15, 2012. The Senior Notes bore interest at 3.25%, payable semiannually, were senior to unsecured debt of the Company and were guaranteed by the Operating Partnership. On March 15, 2012, the Company paid-off in full the $439,318 of Senior Notes then outstanding.
	Line of Credit:
	The Company has a $1,500,000 revolving line of credit that initially bore interest at LIBOR plus a spread of 1.75% to 3.0%, depending on the Company's overall leverage levels, and was to mature on May 2, 2015 with a one-year extension option. The line of credit had the ability to be expanded, depending on certain conditions, up to a total facility of $2,000,000 less the outstanding balance of the $125,000 unsecured term loan as described below.
	On August 6, 2013, the Company's line of credit was amended and extended. The amended facility provides for an interest rate of LIBOR plus a spread of 1.375% to 2.0%, depending on the Company's overall leverage levels, and matures on August 6, 2018. Based on the Company's leverage level as of September 30, 2013, the borrowing rate on the facility was LIBOR plus 1.50%. In addition, the line of credit can be expanded, depending on certain conditions, up to a total facility of $2,000,000 (without giving effect to the $125,000 unsecured term loan described below).
	As of September 30, 2013 and December 31, 2012, borrowings under the line of credit were $145,000 and $675,000, respectively, at an average interest rate of 1.86% and 2.76%, respectively. The fair value (Level 2 measurement) of the line of credit at September 30, 2013 and December 31, 2012 was $137,160 and $675,107, respectively, based on a present value model using a credit interest rate spread offered to the Company for comparable debt.
	Term Loan:
	On December 8, 2011, the Company obtained a $125,000 unsecured term loan under the line of credit that bears interest at LIBOR plus a spread of 1.95% to 3.20%, depending on the Company's overall leverage levels, and matures on December 8, 2018. Based on the Company's leverage level as of September 30, 2013, the borrowing rate was LIBOR plus 2.20%. As of September 30, 2013 and December 31, 2012, the total interest rate was 2.53% and 2.57%, respectively. The fair value (Level 2 measurement) of the term loan at September 30, 2013 and December 31, 2012 was $118,703 and $121,821, respectively, based on a present value model using a credit interest rate spread offered to the Company for comparable debt.
	Greeley Note:
	On July 27, 2006, concurrent with the sale of Greeley Mall, the Company provided marketable securities to replace Greeley Mall as collateral for the mortgage note payable on the property (See Note 6—Marketable Securities). As a result of this transaction, the mortgage note payable was reclassified to bank and other notes payable. On September 1, 2013, the loan was paid off in full. At December 31, 2012, the loan had a balance of $24,027.
	Prasada Note:
	On March 29, 2013, the Company issued a $13,330 note payable that bears interest at 5.25% and matures on March 29, 2016. The note payable is collateralized by a portion of a development reimbursement agreement with the City of Surprise, Arizona. At September 30, 2013, the note had a balance of $12,937. The fair value (Level 2 measurement) of the note at September 30, 2013 was $13,612 based on current interest rates for comparable notes. The method for computing fair value was determined using a present value model and an interest rate that included a credit value adjustment based on the estimated value of the collateral for the underlying debt.
	As of September 30, 2013 and December 31, 2012, the Company was in compliance with all applicable financial loan covenants.

CoVenture_Arrangement

Co-Venture Arrangement:	9 Months Ended
	Sep. 30, 2013
Co-Venture Arrangement:	'
Co-Venture Arrangement:	'
	Co-Venture Arrangement:
	On September 30, 2009, the Company formed a joint venture, whereby a third party acquired a 49.9% interest in Freehold Raceway Mall and Chandler Fashion Center. As part of this transaction, the Company issued a warrant in favor of the third party to purchase 935,358 shares of common stock of the Company at an exercise price of $46.68 per share. See Note 13—Stockholders' Equity. The Company received approximately $174,650 in cash proceeds for the overall transaction, of which $6,496 was attributed to the warrant.
	As a result of the Company having certain rights under the agreement to repurchase the assets after the seventh year of the venture formation, the transaction did not qualify for sale treatment. The Company, however, is not obligated to repurchase the assets. The transaction has been accounted for as a profit-sharing arrangement, and accordingly the assets, liabilities and operations of the properties remain on the books of the Company and a co-venture obligation was established for the amount of $168,154, representing the net cash proceeds received from the third party less costs allocated to the warrant. The co-venture obligation is increased for the allocation of income to the co-venture partner and decreased for distributions to the co-venture partner. The co-venture obligation was $83,951 and $92,215 at September 30, 2013 and December 31, 2012, respectively.

Noncontrolling_Interests

Noncontrolling Interests:	9 Months Ended
	Sep. 30, 2013
Noncontrolling Interest [Abstract]	'
Noncontrolling Interests:	'
	Noncontrolling Interests:
	The Company allocates net income of the Operating Partnership based on the weighted average ownership interest during the period. The net income of the Operating Partnership that is not attributable to the Company is reflected in the consolidated statements of operations as noncontrolling interests. The Company adjusts the noncontrolling interests in the Operating Partnership at the end of each period to reflect its ownership interest in the Company. The Company had a 94% and 93% ownership interest in the Operating Partnership as of September 30, 2013 and December 31, 2012, respectively. The remaining 6% and 7% limited partnership interest as of September 30, 2013 and December 31, 2012, respectively, was owned by certain of the Company's executive officers and directors, certain of their affiliates, and other third party investors in the form of OP Units. The OP Units may be redeemed for shares of stock or cash, at the Company's option. The redemption value for each OP Unit as of any balance sheet date is the amount equal to the average of the closing price per share of the Company's common stock, par value $0.01 per share, as reported on the New York Stock Exchange for the 10 trading days ending on the respective balance sheet date. Accordingly, as of September 30, 2013 and December 31, 2012, the aggregate redemption value of the then-outstanding OP Units not owned by the Company was $557,651 and $586,409, respectively.
	The Company issued common and preferred units of MACWH, LP in April 2005 in connection with the acquisition of the Wilmorite portfolio. The common and preferred units of MACWH, LP are redeemable at the election of the holder, the Company may redeem them for cash or shares of the Company's stock at the Company's option and they are classified as permanent equity.
	Included in permanent equity are outside ownership interests in various consolidated joint ventures. The joint ventures do not have rights that require the Company to redeem the ownership interests in either cash or stock.

Stockholders_Equity

Stockholders' Equity:	9 Months Ended
	Sep. 30, 2013
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity:	'
	Stockholders' Equity:
	Stock Warrants:
	On September 30, 2009, the Company issued a warrant in connection with its formation of a co-venture to own and operate Freehold Raceway Mall and Chandler Fashion Center (See Note 11—Co-Venture Arrangement). The warrant provided for the purchase of 935,358 shares of the Company's common stock. The warrant was valued at $6,496 and recorded as a credit to additional paid-in capital. The warrant was immediately exercisable upon its issuance and was scheduled to expire on December 1, 2012. The warrant had an exercise price of $46.68 per share, with such price subject to anti-dilutive adjustments. The warrant allowed for either gross or net issue settlement at the option of the warrant holder. In the event that the warrant holder elected a net issue settlement, the Company could have elected to settle the warrant in cash or shares; provided, however, that in the event the Company elected to deliver cash, the holder could have elected to instead have the exercise of the warrant satisfied in shares. In addition, the Company had entered into a registration rights agreement with the warrant holders requiring the Company to provide certain registration rights regarding the resale of shares of common stock underlying the warrant. On December 30, 2011, the holders requested a net issue exercise of 311,786 shares of the warrant and the Company elected to deliver a cash payment of $1,278 in exchange for the portion of the warrant exercised. On April 10, 2012, the holders requested a net issue exercise of an additional 311,786 shares of the warrant and the Company elected to deliver a cash payment of $3,448 in exchange for the portion of the warrant exercised. On October 24, 2012, the holders requested a net issue exercise of the remaining 311,786 shares of the warrant and the Company elected to deliver a cash payment of $3,922 in exchange for the portion of the warrant exercised.
	At-The-Market Stock Offering Program ("ATM Program"):
	On August 17, 2012, the Company entered into an equity distribution agreement ("Distribution Agreement") with a number of sales agents to issue and sell, from time to time, shares of common stock, par value $0.01 per share, having an aggregate offering price of up to $500,000 (the “Shares”). Sales of the Shares, if any, may be made in privately negotiated transactions and/or any other method permitted by law, including sales deemed to be an “at the market” offering, which includes sales made directly on the New York Stock Exchange or sales made to or through a market maker other than on an exchange. The Company will pay each sales agent a commission that will not exceed, but may be lower than, 2% of the gross proceeds of the Shares sold through such sales agent under the Distribution Agreement.
	During the nine months ended September 30, 2012, the Company sold 2,961,903 shares of common stock under the ATM Program in exchange for aggregate gross proceeds of $177,896 and net proceeds of $175,649 after commissions and other transaction costs. During the nine months ended September 30, 2013, the Company sold 2,456,956 shares of common stock under the ATM Program in exchange for aggregate gross proceeds of $173,011 and net proceeds of $171,121 after commissions and other transaction costs. The proceeds from the sales were used to pay down the Company's line of credit.
	As of September 30, 2013, $149,093 remained available to be sold under the ATM Program. Actual future sales will depend upon a variety of factors including but not limited to market conditions, the trading price of the Company's common stock and the Company's capital needs. The Company has no obligation to sell the remaining shares available for sale under the ATM Program.
	Stock Issued to Acquire Property:
	On November 28, 2012, the Company issued 535,265 restricted shares of common stock in connection with the acquisition of Kings Plaza Shopping Center (See Note 14—Acquisitions) for a value of $30,000, based on the average closing price of the Company's common stock for ten preceding trading days.

Acquisitions

Acquisitions:	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Acquisitions:	'
		Acquisitions:
	500 North Michigan Avenue:
	On February 29, 2012, the Company acquired a 327,000 square foot mixed-use retail/office building in Chicago, Illinois ("500 North Michigan Avenue") for $70,925. The purchase price was funded from borrowings under the Company's line of credit. The acquisition was completed in order to gain control over the property adjacent to The Shops at North Bridge.
	The following is a summary of the allocation of the fair value of 500 North Michigan Avenue:
	Property	$	66,033
	Deferred charges	7,450
	Other assets	2,143
	Total assets acquired	75,626
	Other accrued liabilities	4,701
	Total liabilities assumed	4,701
	Fair value of acquired net assets	$	70,925
	The Company determined that the purchase price represented the fair value of the assets acquired and liabilities assumed.
	Since the date of acquisition, the Company has included 500 North Michigan Avenue in its consolidated financial statements.
	FlatIron Crossing:
	On October 3, 2012, the Company acquired the remaining 75% ownership interest in FlatIron Crossing, a 1,435,000 square foot regional shopping center in Broomfield, Colorado, that it did not own for $310,397. The acquisition was completed in order to gain 100% ownership and control over this asset. The purchase price was funded by a cash payment of $195,900 and the assumption of the third party's share of the mortgage note payable on the property of $114,497. Prior to the acquisition, the Company had accounted for its investment in FlatIron Crossing under the equity method (See Note 4—Investments in Unconsolidated Joint Ventures). As a result of this transaction, the Company obtained 100% ownership of FlatIron Crossing.
	The following is a summary of the allocation of the fair value of FlatIron Crossing:
	Property	$	443,391
	Deferred charges	25,251
	Cash and cash equivalents	3,856
	Other assets	2,101
	Total assets acquired	474,599
	Mortgage note payable	175,720
	Accounts payable	366
	Other accrued liabilities	11,071
	Total liabilities assumed	187,157
	Fair value of acquired net assets (at 100% ownership)	$	287,442
	The Company determined that the purchase price represented the fair value of the additional ownership interest in FlatIron Crossing that was acquired.
	Fair value of existing ownership interest (at 25% ownership)	$	91,542
	Carrying value of investment	(33,382		)
	Prior gain deferral recognized	26,067
	Gain on remeasurement	$	84,227
	The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
	Purchase price	$	310,397
	Less debt assumed	(114,497		)
	Carrying value of investment	33,382
	Remeasurement gain	84,227
	Less prior gain deferral	(26,067		)
	Fair value of acquired net assets (at 100% ownership)	$	287,442
	The prior gain deferral relates to the prior sale of the 75% ownership interest in FlatIron Crossing. Due to certain contractual rights that were afforded to the buyer of the interest, a portion of that gain was deferred.
	Since the date of acquisition, the Company has included FlatIron Crossing in its consolidated financial statements.
	Arrowhead Towne Center:
	On October 26, 2012, the Company acquired the remaining 33.3% ownership interest in Arrowhead Towne Center, a 1,196,000 square foot regional shopping center in Glendale, Arizona, that it did not own for $144,400. The acquisition was completed in order to gain 100% ownership and control over this asset. The purchase price was funded by a cash payment of $69,025 and the assumption of the third party's pro rata share of the mortgage note payable on the property of $75,375. Prior to the acquisition, the Company had accounted for its investment in Arrowhead Towne Center under the equity method (See Note 4—Investments in Unconsolidated Joint Ventures). As a result of this transaction, the Company obtained 100% ownership of Arrowhead Towne Center.
	The following is a summary of the allocation of the fair value of Arrowhead Towne Center:
	Property	$	423,349
	Deferred charges	31,500
	Restricted cash	4,009
	Tenant receivables	926
	Other assets	4,234
	Total assets acquired	464,018
	Mortgage note payable	244,403
	Accounts payable	815
	Other accrued liabilities	10,449
	Total liabilities assumed	255,667
	Fair value of acquired net assets (at 100% ownership)	$	208,351
	The Company determined that the purchase price represented the fair value of the additional ownership interest in Arrowhead Towne Center that was acquired.
	Fair value of existing ownership interest (at 66.7% ownership)	$	139,326
	Carrying value of investment	(23,597		)
	Gain on remeasurement	$	115,729
	The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
	Purchase price	$	144,400
	Less debt assumed	(75,375		)
	Carrying value of investment	23,597
	Remeasurement gain	115,729
Fair value of acquired net assets (at 100% ownership)	$	208,351
Since the date of acquisition, the Company has included Arrowhead Towne Center in its consolidated financial statements.
Kings Plaza Shopping Center:
On November 28, 2012, the Company acquired Kings Plaza Shopping Center, a 1,199,000 square foot regional shopping center in Brooklyn, New York, for a purchase price of $756,000. The purchase price was funded from a cash payment of $726,000 and the issuance of $30,000 in restricted common stock of the Company (See Note 13—Stockholders' Equity). The cash payment was provided by the placement of a mortgage note payable on the property that allowed for borrowings of up to $500,000 and from borrowings under the Company's line of credit. Concurrent with the acquisition, the Company borrowed $354,000 on the loan. On January 3, 2013, the Company exercised its option to borrow the remaining $146,000 on the loan. The acquisition was completed to acquire a prominent shopping center in Brooklyn, New York.
The following is a summary of the allocation of the fair value of Kings Plaza Shopping Center:
Property	$	714,589
Deferred charges	37,371
Other assets	29,282
Total assets acquired	781,242
Other accrued liabilities	25,242
Total liabilities assumed	25,242
Fair value of acquired net assets	$	756,000
The Company determined that the purchase price represented the fair value of the assets acquired and liabilities assumed.
Since the date of acquisition, the Company has included Kings Plaza Shopping Center in its consolidated financial statements.
Green Acres Mall:
On January 24, 2013, the Company acquired Green Acres Mall, a 1,792,000 square foot regional shopping center in Valley Stream, New York, for a purchase price of $500,000. A purchase deposit of $30,000 was funded during the year ended December 31, 2012, and the remaining $470,000 was funded upon closing of the acquisition. The cash payment made at the time of closing was provided by the placement of a mortgage note payable on the property that allowed for borrowings of up to $325,000 and from borrowings under the Company's line of credit. Concurrent with the acquisition, the Company borrowed $100,000 on the loan. On January 31, 2013, the Company exercised its option to borrow the remaining $225,000 on the loan. The acquisition was completed to acquire another prominent shopping center in the New York metropolitan area.
The following is a summary of the allocation of the fair value of Green Acres Mall:
Property	$	477,673
Deferred charges	45,130
Other assets	19,125
Total assets acquired	541,928
Other accrued liabilities	41,928
Total liabilities assumed	41,928
Fair value of acquired net assets	$	500,000
The Company determined that the purchase price represented the fair value of the assets acquired and liabilities assumed.
Since the date of acquisition, the Company has included Green Acres Mall in its consolidated financial statements. The property has generated incremental revenue of $47,564 and incremental loss of $563 during the nine months ended September 30, 2013.
Green Acres Adjacent:
On April 25, 2013, the Company acquired a 19 acre parcel of land adjacent to Green Acres Mall for $22,577. The payment was provided by borrowings from the Company's line of credit. The acquisition was completed to allow for future expansion of Green Acres Mall.
Camelback Colonnade Restructuring:
On September 17, 2013, the Company’s joint venture in Camelback Colonnade, a 619,000 square foot community center in Phoenix, Arizona, was restructured. As a result of the restructuring, the Company’s ownership interest in Camelback Colonnade decreased from 73.2% to 67.5%. Prior to the restructuring, the Company had accounted for its investment in Camelback Colonnade under the equity method of accounting due to substantive participation rights held by the outside partners. Upon completion of the restructuring, these substantive participation rights were terminated and the Company obtained voting control of the joint venture (See Note 4—Investments in Unconsolidated Joint Ventures).
The following is a summary of the allocation of the fair value of Camelback Colonnade:
Property	$	98,160
Deferred charges	8,284
Cash and cash equivalents	1,280
Restricted cash	1,139
Tenant receivables	615
Other assets	380
Total assets acquired	109,858
Mortgage note payable	49,465
Accounts payable	54
Other accrued liabilities	4,752
Total liabilities assumed	54,271
Fair value of acquired net assets (at 100% ownership)	$	55,587
The Company recognized the following remeasurement gain on the Camelback Colonnade Restructuring:
Fair value of existing ownership interest (at 73.2% ownership)	$	41,690
Carrying value of investment	(5,349		)
Gain on remeasurement	$	36,341
Since the date of the restructuring, the Company has included Camelback Colonnade in its consolidated financial statements. The property has generated incremental revenue of $521 and incremental earnings of $51.
Pro Forma Results of Operations:
The following unaudited pro forma financial information for the three and nine months ended September 30, 2013 and 2012 assumes all of the above transactions took place on January 1, 2012:
	Total			Income from
	revenues (1)			continuing operations (1)
Supplemental pro forma information for the three months ended September 30, 2013	$	269,098		$	43,063
Supplemental pro forma information for the three months ended September 30, 2012	$	258,906		$	43,223
Supplemental pro forma information for the nine months ended September 30, 2013	$	767,733		$	153,151
Supplemental pro forma information for the nine months ended September 30, 2012	$	758,130		$	96,703
-1	This unaudited pro forma supplemental information does not purport to be indicative of what the Company's operating results would have been had these transactions occurred on January 1, 2012, and may not be indicative of future operating results. The Company has excluded remeasurement gains and acquisition costs from these pro forma results as they are considered significant non-recurring adjustments directly attributable to these transactions.

Discontinued_Operations

Discontinued Operations:	9 Months Ended
	Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations:	'
	Discontinued Operations:
	During the three months ended March 31, 2012, the Company recorded an impairment charge of $54,306 related to Valley View Center. As a result of the sale of the property on April 23, 2012, the Company wrote down the carrying value of the long-lived assets to their estimated fair value of $33,450 (Level 1 measurement), which was equal to the sales price of the property. On April 23, 2012, the property was sold by a court appointed receiver, which resulted in a gain on the extinguishment of debt of $104,023.
	On April 30, 2012, the Company sold The Borgata, a 94,000 square foot community center in Scottsdale, Arizona, for $9,150, resulting in a loss on the sale of assets of $1,275. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On May 11, 2012, the Company sold a former Mervyn's store in Montebello, California for $20,750, resulting in a loss on the sale of assets of $407. The Company used the proceeds from the sale for general corporate purposes.
	On May 17, 2012, the Company sold Hilton Village, a 80,000 square foot community center in Scottsdale, Arizona, for $24,820, resulting in a gain on the sale of assets of $3,127. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On May 31, 2012, the Company conveyed Prescott Gateway, a 584,000 square foot regional shopping center in Prescott, Arizona, to the mortgage note lender by a deed-in-lieu of foreclosure. As a result of the conveyance, the Company recognized a gain on the extinguishment of debt of $16,296.
	On June 28, 2012, the Company sold Carmel Plaza, a 112,000 square foot community center in Carmel, California, for $52,000, resulting in a gain on the sale of assets of $7,844. The Company used the proceeds from the sale to pay down its line of credit.
	On May 31, 2013, the Company sold Green Tree Mall, a 793,000 square foot regional shopping center in Clarksville, Indiana, for $79,000, resulting in a gain on the sale of assets of $59,768. The Company used the proceeds from the sale to pay down its line of credit.
	On June 4, 2013, the Company sold Northridge Mall, a 890,000 square foot regional shopping center in Salinas, California, and Rimrock Mall, a 603,000 square foot regional shopping center in Billings, Montana. The properties were sold in a combined transaction for $230,000, resulting in a gain on the sale of assets of $82,079. The Company used the proceeds from the sale to pay down its line of credit.
	On September 11, 2013, the Company sold a former Mervyn's store in Milpitas, California for $12,000, resulting in a loss on the sale of assets of $2,617. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On September 30, 2013, the Company conveyed Fiesta Mall, a 933,000 square foot regional shopping center in Mesa, Arizona, to the mortgage note lender by a deed-in-lieu of foreclosure. As a result of the conveyance, the Company recognized a gain on the extinguishment of debt of $1,401, which is included in (loss) gain on the disposition of assets, net.
	The Company has classified the results of operations and the gain or loss on all of the above dispositions as discontinued operations for the three and nine months ended September 30, 2013 and 2012.
	Revenues from discontinued operations consisted of $2,524 and $11,580 for the three months ended September 30, 2013 and 2012, respectively, and $21,855 and $47,861 for the nine months ended September 30, 2013 and 2012, respectively. Total (loss) income from discontinued operations was $(1,962) and $2,350 for the three months ended September 30, 2013 and 2012, respectively, and $144,047 and $80,928 for the nine months ended September 30, 2013 and 2012, respectively.

Commitments_and_Contingencies

Commitments and Contingencies:	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies:	'
	Commitments and Contingencies:
	The Company has certain properties that are subject to non-cancelable operating ground leases. The leases expire at various times through 2098, subject in some cases to options to extend the terms of the leases. Certain leases provide for contingent rent payments based on a percentage of base rental income, as defined in the lease. Ground rent expense was $2,580 and $2,244 for the three months ended September 30, 2013 and 2012, respectively, and $7,881 and $6,329 for the nine months ended September 30, 2013 and 2012, respectively. No contingent rent was incurred during the three and nine months ended September 30, 2013 or 2012.
	As of September 30, 2013 and December 31, 2012, the Company was contingently liable for $3,657 and $3,757, respectively, in letters of credit guaranteeing performance by the Company of certain obligations relating to the Centers. The Company does not believe that these letters of credit will result in a liability to the Company.
	The Company has entered into a number of construction agreements related to its redevelopment and development activities. Obligations under these agreements are contingent upon the completion of the services within the guidelines specified in the agreements. At September 30, 2013, the Company had $12,359 in outstanding obligations which it believes will be settled in the next twelve months.

RelatedParty_Transactions

Related-Party Transactions:	9 Months Ended
	Sep. 30, 2013
Related Party Transactions [Abstract]	'
Related-Party Transactions:	'
	Related Party Transactions:
	Certain unconsolidated joint ventures and third-parties have engaged the Management Companies to manage the operations of the Centers. Under these arrangements, the Management Companies are reimbursed for compensation paid to on-site employees, leasing agents and project managers at the Centers, as well as insurance costs and other administrative expenses. The following are fees charged to unconsolidated joint ventures:
		For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		2013		2012		2013		2012
	Management Fees	$	5,286	$	5,861	$	16,286	$	17,862
	Development and Leasing Fees	3,810		3,677		8,284		9,764
		$	9,096	$	9,538	$	24,570	$	27,626
	Certain mortgage notes on the properties are held by NML (See Note 9—Mortgage Notes Payable). Interest expense in connection with these notes was $3,745 and $3,815 for the three months ended September 30, 2013 and 2012, respectively, and $11,289 and $11,588 for the nine months ended September 30, 2013 and 2012, respectively. Included in accounts payable and accrued expenses is interest payable on these notes of $1,246 and $1,264 at September 30, 2013 and December 31, 2012, respectively.
	As of September 30, 2013 and December 31, 2012, the Company had loans to unconsolidated joint ventures of $2,736 and $3,345, respectively. Interest income associated with these notes was $58 and $63 for the three months ended September 30, 2013 and 2012, respectively, and $178 and $191 for the nine months ended September 30, 2013 and 2012, respectively. These loans represent initial funds advanced to development stage projects prior to construction loan funding. Accordingly, loan payables in the same amount have been accrued as an obligation by the various joint ventures.
	Due from affiliates includes $5,740 and $4,568 of unreimbursed costs and fees due from unconsolidated joint ventures under management agreements at September 30, 2013 and December 31, 2012, respectively. Due from affiliates at September 30, 2013 and December 31, 2012 also includes two notes receivable from principals of AWE/Talisman that bear interest at 5.0% and mature based on the refinancing or sale of Fashion Outlets of Chicago, or certain other specified events. The notes are collateralized by the principals' interests in Fashion Outlets of Chicago. AWE/Talisman is considered a related party because it has an ownership interest in Fashion Outlets of Chicago. The balance on these notes was $13,446 and $12,500 at September 30, 2013 and December 31, 2012, respectively. Interest income earned on these notes was $157 and $158 for the three months ended September 30, 2013 and 2012, respectively, and $467 and $321 for the nine months ended September 30, 2013 and 2012, respectively. In addition, due from affiliates at September 30, 2013 includes a note receivable of $13,113 from RED/303 LLC ("RED") that bears interest at 5.25% and matures on March 29, 2016. Interest income earned on this note was $176 and $356 for the three and nine months ended September 30, 2013, respectively. RED is considered a related party because it is a partner in a joint venture development project. The note is collateralized by RED's membership interest in a development agreement.

Share_and_UnitBased_Plans

Share and Unit-Based Plans:	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share and Unit-Based Plans:	'
	Share and Unit-Based Plans:
	On February 15, 2013, the Company granted 332,189 limited partnership units of the Operating Partnership ("LTIP Units") under the Long-Term Incentive Plan to seven executive officers at a weighted average grant date fair value of $49.67 per LTIP Unit. The new grants vest over a service period ending December 31, 2013 based on the percentile ranking of the Company in terms of total return to stockholders (the "Total Return") per share of common stock relative to the Total Return of a group of peer REITs, as measured at the end of the measurement period. Upon the occurrence of specified events and subject to the satisfaction of applicable vesting conditions, LTIP Units (after conversion into OP Units) are ultimately redeemable for common stock of the Company on a one-unit for one-share basis.
	The fair value of the Company's LTIP Units granted in 2013 was estimated on the date of grant using a Monte Carlo Simulation model. The stock price of the Company, along with the stock prices of the group of peer REITs, was assumed to follow the Multivariate Geometric Brownian Motion Process. Multivariate Geometric Brownian Motion Process modeling is commonly used in financial markets, as it allows the modeled quantity (in this case, the stock price) to vary randomly from its current value based on the stock price's expected volatility and current market interest rates. The volatilities of the returns on the stock price of the Company and the peer group REITs were estimated based on a one-year look-back period. The expected growth rate of the stock prices over the derived service period was determined with consideration of the risk free rate as of the grant date.
	The following summarizes the compensation cost under the share and unit-based plans:
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
		2013			2012			2013				2012
	LTIP Units	$	4,743		$	2,778		$	12,393			$	6,646
	Stock awards	121			125			353				345
	Stock units	674			383			3,165				2,991
	Stock options	4			18			12				18
	Stock appreciation rights ("SARs")	—			210			—				291
	Phantom stock units	248			211			735				721
		$	5,790		$	3,725		$	16,658			$	11,012
	The Company capitalized share and unit-based compensation costs of $657 and $436 for the three months ended September 30, 2013 and 2012, respectively, and $2,745 and $2,209 for the nine months ended September 30, 2013 and 2012, respectively. Unrecognized compensation costs of share and unit-based plans at September 30, 2013 consisted of $4,744 from LTIP Units, $779 from stock awards, $3,650 from stock units, $64 from stock options and $1,155 from phantom stock units.
	The following table summarizes the activity of the non-vested LTIP Units, stock awards, phantom stock units and stock units:
		LTIP Units					Stock Awards							Phantom Stock Units				Stock Units
		Units		Value(1)			Shares			Value(1)				Units		Value(1)		Units		Value(1)
	Balance at January 1, 2013	200,000		$	38.63		20,924			$	49.36			—		$	—	114,677		$	52.19
	Granted	332,189		49.67			8,963			61.84				32,063		58.94		67,920		62.01
	Vested	(200,000	)	38.63			(10,886	)		46.7				(12,377	)	59.38		(45,279	)	51.29
	Forfeited	—		—			—			—				—		—		—		—
	Balance at September 30, 2013	332,189		$	49.67		19,001			$	56.77			19,686		$	58.66	137,318		$	57.24
	-1	Value represents the weighted-average grant date fair value.
	The following table summarizes the activity of the SARs and stock options outstanding:
		SARs					Stock Options
		Shares		Value(1)			Shares			Value(1)
	Balance at January 1, 2013	1,164,185		$	56.66		12,768			$	54.69
	Granted	—		—			—			—
	Exercised	(93,194	)	56.63			(2,700	)		36.51
	Forfeited	—		—			—			—
	Balance at September 30, 2013	1,070,991		$	56.66		10,068			$	59.57
	-1	Value represents the weighted-average exercise price.

Income_Taxes

Income Taxes:	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes:	'
	Income Taxes:
	The Company has made taxable REIT subsidiary elections for all of its corporate subsidiaries other than its qualified REIT subsidiaries. The elections, effective for the year beginning January 1, 2001 and future years, were made pursuant to Section 856(l) of the Code. The Company's Taxable REIT Subsidiaries ("TRSs") are subject to corporate level income taxes which are provided for in the Company's consolidated financial statements. The Company's primary TRSs include Macerich Management Company and Macerich Arizona Partners LLC.
	The income tax benefit of the TRSs is as follows:
		For the Three Months Ended September 30,					For the Nine Months Ended September 30,
		2013			2012		2013			2012
	Current	$	(79	)	$	—	$	(235	)	$	—
	Deferred	622			934		2,498			2,159
	Income tax benefit	$	543		$	934	$	2,263		$	2,159
	The net operating loss carryforwards are currently scheduled to expire through 2032, beginning in 2021. Net deferred tax assets of $32,020 and $33,414 were included in deferred charges and other assets, net at September 30, 2013 and December 31, 2012, respectively.
	The tax returns for the years 2010-2012 remain open to examination by the taxing jurisdictions to which the Company is subject. The Company does not expect that the total amount of unrecognized tax benefits will materially change within the next twelve months.

Subsequent_Events

Subsequent Events:	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Subsequent Events:	'
	Subsequent Events:
	On October 8, 2013, the Company's joint venture in Ridgmar Mall, a 1,273,000 square foot regional shopping center in Forth Worth, Texas, sold the property for $60,900. The cash proceeds from the sale were used to pay off the $51,657 mortgage loan on the property and the remaining $9,243 net of closing costs was distributed to the partners. The Company used its share of the proceeds to pay down its line of credit and for general corporate purposes.
	On October 15, 2013, the Company sold a former Mervyn's store in Midland, Texas for $5,700. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On October 21, 2013, the Company received a commitment for a mortgage note payable on FlatIron Crossing. The new $268,000 mortgage note payable is expected to bear interest at a fixed rate of 3.85% and have a seven year term. The Company plans to use the proceeds for the repayment of debt and for general corporate purposes.
	On October 23, 2013, the Company sold a former Mervyn's store in Grand Junction, Colorado for $5,430. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On October 24, 2013, the Company acquired the remaining 33.3% ownership interest in Superstition Springs Center, a 999,000 square foot regional shopping center in Mesa, Arizona, that it did not own for $44,242. The purchase price was funded by a cash payment of $21,742 and the assumption of the third party's pro rata share of the mortgage note payable on the property of $22,500.
	On October 24, 2013, the Company announced a dividend/distribution of $0.62 per share for common stockholders and OP Unit holders of record on November 12, 2013. All dividends/distributions will be paid 100% in cash on December 6, 2013.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies: (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation:
	The accompanying consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. They do not include all of the information and footnotes required by GAAP for complete financial statements and have not been audited by independent public accountants.
	The accompanying consolidated financial statements include the accounts of the Company and the Operating Partnership. Investments in entities in which the Company has a controlling financial interest or entities that meet the definition of a variable interest entity in which the Company has, as a result of ownership, contractual or other financial interests, both the power to direct activities that most significantly impact the economic performance of the variable interest entity and the obligation to absorb losses or the right to receive benefits that could potentially be significant to the variable interest entity are consolidated; otherwise they are accounted for under the equity method of accounting and are reflected as investments in unconsolidated joint ventures.
	All intercompany accounts and transactions have been eliminated in the consolidated financial statements.
	The unaudited interim consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2012. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the consolidated financial statements for the interim periods have been made. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and 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 period. Actual results could differ from those estimates. The accompanying consolidated balance sheet as of December 31, 2012 has been derived from the audited financial statements, but does not include all disclosures required by GAAP.

Earnings_per_Share_EPS_Tables

Earnings per Share ("EPS"): (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Reconciliation of numerator and denominator used in computation of earnings per share	'
	The following table reconciles the numerator and denominator used in the computation of earnings per share for the three and nine months ended September 30, 2013 and 2012 (shares in thousands):
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
		2013			2012			2013			2012
	Numerator
	Income from continuing operations	$	42,787		$	44,925		$	154,123		$	99,166
	(Loss) income from discontinued operations	(1,962		)	2,350			144,047			80,928
	Net income attributable to noncontrolling interests	(2,702		)	(3,382		)	(22,958		)	(16,915		)
	Net income attributable to the Company	38,123			43,893			275,212			163,179
	Allocation of earnings to participating securities	(80		)	(63		)	(257		)	(443		)
	Numerator for basic and diluted earnings per share—net income attributable to common stockholders	$	38,043		$	43,830		$	274,955		$	162,736
	Denominator
	Denominator for basic earnings per share—weighted average number of common shares outstanding	140,712			134,220			139,219			133,091
	Effect of dilutive securities:(1)
	Stock warrants	—			64			—			78
	Share and unit-based compensation plans	61			46			101			18
	Denominator for diluted earnings per share—weighted average number of common shares outstanding	140,773			134,330			139,320			133,187
	Earnings per common share—basic:
	Income from continuing operations	$	0.28		$	0.31		$	1		$	0.66
	Discontinued operations	(0.01		)	0.02			0.97			0.56
	Net income attributable to common stockholders	$	0.27		$	0.33		$	1.97		$	1.22
	Earnings per common share—diluted:
	Income from continuing operations	$	0.28		$	0.31		$	1		$	0.66
	Discontinued operations	(0.01		)	0.02			0.97			0.56
	Net income attributable to common stockholders	$	0.27		$	0.33		$	1.97		$	1.22
	-1	The convertible senior notes ("Senior Notes") are excluded from diluted EPS for the nine months ended September 30, 2012 as their impact was antidilutive. The Senior Notes were paid off in full on March 15, 2012 (See Note 10—Bank and Other Notes Payable).
	Diluted EPS excludes 184,304 convertible preferred units for the three months ended September 30, 2013 and 2012, and 184,304 and 197,183 convertible preferred units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.
	Diluted EPS excludes 9,621,313 and 10,769,552 Operating Partnership units ("OP Units") for the three months ended September 30, 2013 and 2012, respectively, and 9,920,197 and 11,069,129 OP Units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.

Investments_in_Unconsolidated_1

Investments in Unconsolidated Joint Ventures: (Tables)	9 Months Ended
	Sep. 30, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Combined and Condensed Balance Sheets of Unconsolidated Joint Ventures and Other Related Information	'
	Combined Condensed Balance Sheets of Unconsolidated Joint Ventures:
		September 30,			December 31,
		2013			2012
	Assets(1):
	Properties, net	$	3,454,127		$	3,653,631
	Other assets	316,985			411,862
	Total assets	$	3,771,112		$	4,065,493
	Liabilities and partners' capital(1):
	Mortgage notes payable(2)	$	3,648,498		$	3,240,723
	Other liabilities	196,927			148,711
	Company's (deficit) capital	(72,153		)	304,477
	Outside partners' (deficit) capital	(2,160		)	371,582
	Total liabilities and partners' capital	$	3,771,112		$	4,065,493
	Investments in unconsolidated joint ventures:
	Company's (deficit) capital	$	(72,153	)	$	304,477
	Basis adjustment(3)	521,151			516,833
		$	448,998		$	821,310
	Assets—Investments in unconsolidated joint ventures	$	706,450		$	974,258
	Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(257,452		)	(152,948		)
		$	448,998		$	821,310
	-1	These amounts include the assets and liabilities of the following joint ventures as of September 30, 2013 and December 31, 2012:
		Pacific			Tysons
		Premier			Corner LLC
		Retail LP
	As of September 30, 2013:
	Total Assets	$	776,186		$	467,632
	Total Liabilities	$	818,222		$	337,804
	As of December 31, 2012:
	Total Assets	$	1,039,742		$	409,622
	Total Liabilities	$	942,370		$	329,145
	-2	Certain mortgage notes payable could become recourse debt to the Company should the joint venture be unable to discharge the obligations of the related debt. As of September 30, 2013 and December 31, 2012, a total of $47,040 and $51,171, respectively, could become recourse debt to the Company. As of September 30, 2013 and December 31, 2012, the Company had indemnity agreements from joint venture partners for $21,270 of the guaranteed amount.
	Included in mortgage notes payable are amounts due to affiliates of Northwestern Mutual Life ("NML") of $715,332 and $436,857 as of September 30, 2013 and December 31, 2012, respectively. NML is considered a related party because it is a joint venture partner with the Company in Macerich Northwestern Associates—Broadway Plaza. Interest expense incurred on these borrowings amounted to $7,920 and $10,980 for the three months ended September 30, 2013 and 2012, respectively, and $21,717 and $32,974 for the nine months ended September 30, 2013 and 2012, respectively.
	-3	The Company amortizes the difference between the cost of its investments in unconsolidated joint ventures and the book value of the underlying equity into income on a straight-line basis consistent with the lives of the underlying assets. The amortization of this difference was $3,860 and $3,136 for the three months ended September 30, 2013 and 2012, respectively, and $9,753 and $6,211 for the nine months ended September 30, 2013 and 2012, respectively.
Combined and Condensed Statements of Operations of Unconsolidated Joint Ventures	'
	Combined Condensed Statements of Operations of Unconsolidated Joint Ventures:
		Pacific			Tysons			Other			Total
		Premier			Corner			Joint
		Retail LP			LLC			Ventures
	Three Months Ended September 30, 2013
	Revenues:
	Minimum rents	$	27,426		$	15,344		$	59,940		$	102,710
	Percentage rents	572			(12		)	2,938			3,498
	Tenant recoveries	12,115			11,304			28,361			51,780
	Other	1,086			510			8,143			9,739
	Total revenues	41,199			27,146			99,382			167,727
	Expenses:
	Shopping center and operating expenses	12,231			9,818			35,926			57,975
	Interest expense	10,251			3,801			21,062			35,114
	Depreciation and amortization	9,067			4,568			22,688			36,323
	Total operating expenses	31,549			18,187			79,676			129,412
	Gain (loss) on remeasurement, sale or write down of assets, net	38,432			—			(328		)	38,104
	Gain on early extinguishment of debt	—			14			—			14
	Net income	$	48,082		$	8,973		$	19,378		$	76,433
	Company's equity in net income	$	21,567		$	2,919		$	10,675		$	35,161
	Three Months Ended September 30, 2012
	Revenues:
	Minimum rents	$	32,718		$	15,847		$	75,809		$	124,374
	Percentage rents	837			233			4,214			5,284
	Tenant recoveries	14,091			11,340			37,663			63,094
	Other	1,138			618			9,415			11,171
	Total revenues	48,784			28,038			127,101			203,923
	Expenses:
	Shopping center and operating expenses	15,075			8,760			46,153			69,988
	Interest expense	12,904			2,838			32,338			48,080
	Depreciation and amortization	10,905			5,094			28,784			44,783
	Total operating expenses	38,884			16,692			107,275			162,851
	Loss on remeasurement, sale or write down of assets, net	—			—			(28		)	(28		)
	Net income	$	9,900		$	11,346		$	19,798		$	41,044
	Company's equity in net income	$	5,035		$	4,372		$	9,908		$	19,315
		Pacific			Tysons			Other			Total
		Premier			Corner			Joint
		Retail LP			LLC			Ventures
	Nine Months Ended September 30, 2013
	Revenues:
	Minimum rents	$	91,779		$	46,526		$	180,870		$	319,175
	Percentage rents	2,155			734			7,176			10,065
	Tenant recoveries	40,555			34,025			82,261			156,841
	Other	3,980			2,080			26,923			32,983
	Total revenues	138,469			83,365			297,230			519,064
	Expenses:
	Shopping center and operating expenses	40,948			26,819			106,887			174,654
	Interest expense	33,118			7,825			66,108			107,051
	Depreciation and amortization	30,697			13,499			67,808			112,004
	Total operating expenses	104,763			48,143			240,803			393,709
	Gain on remeasurement, sale or write down of assets, net	182,781			—			373			183,154
	Gain on early extinguishment of debt	—			14			—			14
	Net income	$	216,487		$	35,236		$	56,800		$	308,523
	Company's equity in net income	$	105,684		$	12,957		$	26,836		$	145,477
	Nine Months Ended September 30, 2012
	Revenues:
	Minimum rents	$	98,812		$	47,149		$	251,599		$	397,560
	Percentage rents	2,571			866			10,531			13,968
	Tenant recoveries	41,967			32,969			121,825			196,761
	Other	3,665			1,964			27,775			33,404
	Total revenues	147,015			82,948			411,730			641,693
	Expenses:
	Shopping center and operating expenses	43,385			25,834			155,014			224,233
Interest expense	39,405			8,902			108,784			157,091
Depreciation and amortization	31,926			15,279			91,214			138,419
Total operating expenses	114,716			50,015			355,012			519,743
(Loss) gain on remeasurement, sale or write down of assets, net	(10		)	—			22,948			22,938
Net income	$	32,289		$	32,933		$	79,666		$	144,888
Company's equity in net income	$	16,422		$	12,721		$	39,481		$	68,624

Property_Tables

Property: (Tables)	9 Months Ended
	Sep. 30, 2013
Property, Plant and Equipment [Abstract]	'
Components of property	'
	Property consists of the following:
		September 30,			December 31,
		2013			2012
	Land	$	1,751,611		$	1,572,621
	Buildings and improvements	6,642,696			6,417,674
	Tenant improvements	554,528			496,203
	Equipment and furnishings	153,146			149,959
	Construction in progress	239,106			376,249
		9,341,087			9,012,706
	Less accumulated depreciation	(1,607,158		)	(1,533,160		)
		$	7,733,929		$	7,479,546

Marketable_Securities_Tables

Marketable Securities: (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Reconciliation of marketable securities	'
	Marketable securities consist of the following:
		September 30,		December 31,
		2013		2012
	Government debt securities, at par value	$	—	$	23,769
	Less discount	—		(102		)
		—		23,667
	Unrealized gain	—		685
	Fair value (Level 1 measurement)	$	—	$	24,352

Deferred_Charges_and_Other_Ass1

Deferred Charges and Other Assets, net: (Tables)	9 Months Ended
	Sep. 30, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
Schedule of deferred charges and other assets, net	'
	Deferred charges and other assets, net, consist of the following:
		September 30,			December 31,
		2013			2012
	Leasing	$	226,891		$	234,498
	Financing	52,038			42,868
	Intangible assets:
	In-place lease values	199,274			175,735
	Leasing commissions and legal costs	50,020			46,419
	Above-market leases	116,717			118,033
	Deferred tax assets	32,020			33,414
	Deferred compensation plan assets	29,126			24,670
	Acquisition deposit	—			30,000
	Other assets	68,180			72,811
		774,266			778,448
	Less accumulated amortization(1)	(227,684		)	(213,318		)
		$	546,582		$	565,130
	-1	Accumulated amortization includes $80,747 and $62,792 relating to in-place lease values, leasing commissions and legal costs at September 30, 2013 and December 31, 2012, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $12,228 and $6,323 for the three months ended September 30, 2013 and 2012, respectively, and $40,611 and $22,529 for the nine months ended September 30, 2013 and 2012, respectively.
Allocated values of above-market leases and below-market leases	'
	The allocated values of above-market leases and below-market leases consist of the following:
		September 30,			December 31,
		2013			2012
	Above-Market Leases
	Original allocated value	$	116,717		$	118,033
	Less accumulated amortization	(43,047		)	(46,361		)
		$	73,670		$	71,672
	Below-Market Leases(1)
	Original allocated value	$	186,600		$	164,489
	Less accumulated amortization	(74,056		)	(77,131		)
		$	112,544		$	87,358
	-1	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable_Tables

Mortgage Notes Payable: (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Mortgage notes payable	'
	Mortgage notes payable at September 30, 2013 and December 31, 2012 consist of the following:
			Carrying Amount of Mortgage Notes(1)
			September 30, 2013					December 31, 2012
	Property Pledged as Collateral		Related Party			Other		Related Party		Other		Effective Interest		Monthly		Maturity
												Rate(2)		Debt		Date(4)
														Service(3)
	Arrowhead Towne Center		$	—		$	237,832	$	—	$	243,176	2.76	%	$	1,131	2018
	Camelback Colonnade(5)		—			49,416		—		—		2.16	%	178		2015
	Chandler Fashion Center(6)		—			200,000		—		200,000		3.77	%	625		2019
	Chesterfield Towne Center		—			110,000		—		110,000		4.8	%	573		2022
	Danbury Fair Mall		117,810			117,809		119,823		119,823		5.53	%	1,538		2020
	Deptford Mall		—			202,556		—		205,000		3.76	%	947		2023
	Deptford Mall		—			14,616		—		14,800		6.46	%	101		2016
	Eastland Mall		—			168,000		—		168,000		5.79	%	811		2016
	Fashion Outlets of Chicago(7)		—			81,472		—		9,165		2.98	%	182		2017
	Fashion Outlets of Niagara Falls USA		—			124,682		—		126,584		4.89	%	727		2020
	Fiesta Mall(8)		—			—		—		84,000		—		—		—
	Flagstaff Mall		—			37,000		—		37,000		5.03	%	151		2015
	FlatIron Crossing(9)		—			—		—		173,561		—		—		—
	Freehold Raceway Mall(6)		—			232,900		—		232,900		4.2	%	805		2018
	Fresno Fashion Fair		79,701			79,701		80,601		80,602		6.76	%	1,104		2015
	Great Northern Mall		—			35,719		—		36,395		5.19	%	234		2013
	Green Acres Mall(10)		—			321,407		—		—		3.61	%	1,447		2021
	Kings Plaza Shopping Center(11)		—			492,954		—		354,000		3.67	%	2,229		2019
	Northgate Mall(12)		—			64,000		—		64,000		3.06	%	130		2017
	Oaks, The		—			215,224		—		218,119		4.14	%	1,064		2022
	Pacific View		—			136,478		—		138,367		4.08	%	668		2022
	Paradise Valley Mall(13)		—			—		—		81,000		—		—		—
	Promenade at Casa Grande(14)		—			64,226		—		73,700		5.21	%	245		2013
	Salisbury, Centre at		—			115,000		—		115,000		5.83	%	555		2016
	Santa Monica Place		—			236,701		—		240,000		2.99	%	1,004		2018
	SanTan Village Regional Center(15)		—			137,321		—		138,087		3.14	%	589		2019
	South Plains Mall		—			100,221		—		101,340		6.58	%	648		2015
	South Towne Center(16)		—			—		—		85,247		—		—		—
	Towne Mall		—			23,092		—		23,369		4.48	%	117		2022
	Tucson La Encantada		73,204			—		74,185		—		4.23	%	368		2022
	Twenty Ninth Street(17)		—			107,000		—		107,000		3.02	%	251		2016
	Valley Mall		—			42,345		—		42,891		5.85	%	280		2016
	Valley River Center		—			120,000		—		120,000		5.59	%	558		2016
	Victor Valley, Mall of(18)		—			90,000		—		90,000		2.74	%	183		2014
	Vintage Faire Mall(16)		—			99,431		—		135,000		5.81	%	586		2015
	Westside Pavilion		—			152,797		—		154,608		4.49	%	783		2022
	Wilton Mall(19)		—			—		—		40,000		—		—		—
			$	270,715		$	4,209,900	$	274,609	$	4,162,734
	-1	The mortgage notes payable balances include the unamortized debt premiums (discounts). Debt premiums (discounts) represent the excess (deficiency) of the fair value of debt over (under) the principal value of debt assumed in various acquisitions and are amortized to interest expense over the remaining term of the related debt in a manner that approximates the effective interest method.
	Debt premiums (discounts) consist of the following:
	Property Pledged as Collateral	September 30,			December 31,
		2013			2012
	Arrowhead Towne Center	$	15,411		$	17,716
	Camelback Colonnade	2,416			—
	Deptford Mall	(15		)	(19		)
	Fashion Outlets of Niagara Falls USA	6,574			7,270
	FlatIron Crossing	—			5,232
	Great Northern Mall	(5		)	(28		)
	Valley Mall	(241		)	(307		)
		$	24,140		$	29,864
	-2	The interest rate disclosed represents the effective interest rate, including the debt premiums (discounts) and deferred finance costs.
	-3	The monthly debt service represents the payment of principal and interest.
	-4	The maturity date assumes that all extension options are fully exercised and that the Company does not opt to refinance the debt prior to these dates. These extension options are at the Company's discretion, subject to certain conditions, which the Company believes will be met.
	-5	On September 17, 2013, the Company obtained control of the consolidated joint venture as a result of the Camelback Colonnade Restructuring (See Note 14—Acquisitions). The loan on the property bears interest at an effective rate of 2.16% and matures on October 12, 2015.
	-6	A 49.9% interest in the loan has been assumed by a third party in connection with a co-venture arrangement (See Note 11—Co-Venture Arrangement).
	-7	The construction loan on the property allows for borrowings up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At September 30, 2013 and December 31, 2012, the total interest rate was 2.98% and 3.00%, respectively.
	-8	On September 30, 2013, the Company conveyed the property to the lender by a deed-in-lieu of foreclosure. As a result, the Company has been discharged from this non-recourse loan (See Note 15—Discontinued Operations).
-9	On June 4, 2013, the loan was paid off in full, which resulted in a gain of $2,791 on the early extinguishment of debt.
-10	On January 24, 2013, in connection with the Company's acquisition of Green Acres Mall (See Note 14—Acquisitions), the Company placed a new loan on the property that allowed for borrowings of up to $325,000, bears interest at an effective interest rate of 3.61% and matures on February 3, 2021. Concurrent with the acquisition, the Company borrowed $100,000 on the loan. On January 31, 2013, the Company exercised its option to borrow an additional $225,000 on the loan.
-11	On January 3, 2013, the Company exercised its option to borrow an additional $146,000 on the loan.
-12	The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At September 30, 2013 and December 31, 2012, the total interest rate was 3.06% and 3.09%, respectively.
-13	On August 26, 2013, the loan was paid off in full.
-14	The loan bears interest at LIBOR plus 4.0% with a LIBOR rate floor of 0.50% and matures on December 30, 2013. At September 30, 2013 and December 31, 2012, the total interest rate was 5.21%.
-15	On May 30, 2013, the consolidated joint venture replaced the existing loan on the property with a new $138,000 loan that bears interest at 3.14% and matures on June 1, 2019.
-16	On April 30, 2013, the existing loan on Vintage Faire Mall was paid off in full, resulting in a loss of $853 on the early extinguishment of debt. Concurrently, the loan on South Towne Center was assumed by Vintage Faire Mall. An additional $15,200 loan was added to the assumed loan that bears interest at 2.50% and matures on November 5, 2015.
-17	The loan bears interest at LIBOR plus 2.63% and matures on January 18, 2016. At September 30, 2013 and December 31, 2012, the total interest rate was 3.02% and 3.04%, respectively.
-18	The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At September 30, 2013 and December 31, 2012, the total interest rate was 2.74% and 2.12%, respectively.
-19	On August 1, 2013, the loan was paid off in full
Debt premiums (discounts) on mortgage notes payable	'
	Debt premiums (discounts) consist of the following:
	Property Pledged as Collateral	September 30,			December 31,
		2013			2012
	Arrowhead Towne Center	$	15,411		$	17,716
	Camelback Colonnade	2,416			—
	Deptford Mall	(15		)	(19		)
	Fashion Outlets of Niagara Falls USA	6,574			7,270
	FlatIron Crossing	—			5,232
	Great Northern Mall	(5		)	(28		)
	Valley Mall	(241		)	(307		)
		$	24,140		$	29,864

Acquisitions_Tables

Acquisitions: (Tables)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Schedule of recognized identified assets acquired and liabilities assumed	'
	The following is a summary of the allocation of the fair value of 500 North Michigan Avenue:
	Property	$	66,033
	Deferred charges	7,450
	Other assets	2,143
	Total assets acquired	75,626
	Other accrued liabilities	4,701
	Total liabilities assumed	4,701
	Fair value of acquired net assets	$	70,925
	The following is a summary of the allocation of the fair value of Camelback Colonnade:
	Property	$	98,160
	Deferred charges	8,284
	Cash and cash equivalents	1,280
	Restricted cash	1,139
	Tenant receivables	615
	Other assets	380
	Total assets acquired	109,858
	Mortgage note payable	49,465
	Accounts payable	54
	Other accrued liabilities	4,752
	Total liabilities assumed	54,271
	Fair value of acquired net assets (at 100% ownership)	$	55,587
	The following is a summary of the allocation of the fair value of Green Acres Mall:
	Property	$	477,673
	Deferred charges	45,130
	Other assets	19,125
	Total assets acquired	541,928
	Other accrued liabilities	41,928
	Total liabilities assumed	41,928
	Fair value of acquired net assets	$	500,000
	The following is a summary of the allocation of the fair value of Kings Plaza Shopping Center:
	Property	$	714,589
	Deferred charges	37,371
	Other assets	29,282
	Total assets acquired	781,242
	Other accrued liabilities	25,242
	Total liabilities assumed	25,242
	Fair value of acquired net assets	$	756,000
	The following is a summary of the allocation of the fair value of Arrowhead Towne Center:
	Property	$	423,349
	Deferred charges	31,500
	Restricted cash	4,009
	Tenant receivables	926
	Other assets	4,234
	Total assets acquired	464,018
	Mortgage note payable	244,403
	Accounts payable	815
	Other accrued liabilities	10,449
	Total liabilities assumed	255,667
	Fair value of acquired net assets (at 100% ownership)	$	208,351
	The following is a summary of the allocation of the fair value of FlatIron Crossing:
	Property	$	443,391
	Deferred charges	25,251
	Cash and cash equivalents	3,856
	Other assets	2,101
	Total assets acquired	474,599
	Mortgage note payable	175,720
	Accounts payable	366
	Other accrued liabilities	11,071
	Total liabilities assumed	187,157
	Fair value of acquired net assets (at 100% ownership)	$	287,442
Schedule of reconciliation of the purchase price to the fair value of the acquired net assets	'
	The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
	Purchase price	$	310,397
	Less debt assumed	(114,497		)
	Carrying value of investment	33,382
	Remeasurement gain	84,227
	Less prior gain deferral	(26,067		)
	Fair value of acquired net assets (at 100% ownership)	$	287,442
	The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
	Purchase price	$	144,400
	Less debt assumed	(75,375		)
	Carrying value of investment	23,597
	Remeasurement gain	115,729
	Fair value of acquired net assets (at 100% ownership)	$	208,351
Summary of gain on remeasurement of existing investment	'
	The Company determined that the purchase price represented the fair value of the additional ownership interest in FlatIron Crossing that was acquired.
	Fair value of existing ownership interest (at 25% ownership)	$	91,542
	Carrying value of investment	(33,382		)
	Prior gain deferral recognized	26,067
	Gain on remeasurement	$	84,227
	The Company determined that the purchase price represented the fair value of the additional ownership interest in Arrowhead Towne Center that was acquired.
	Fair value of existing ownership interest (at 66.7% ownership)	$	139,326
	Carrying value of investment	(23,597		)
	Gain on remeasurement	$	115,729
	The Company recognized the following remeasurement gain on the Camelback Colonnade Restructuring:
	Fair value of existing ownership interest (at 73.2% ownership)	$	41,690
	Carrying value of investment	(5,349		)
	Gain on remeasurement	$	36,341
Schedule of pro forma total revenue and income from continuing operations	'
	The following unaudited pro forma financial information for the three and nine months ended September 30, 2013 and 2012 assumes all of the above transactions took place on January 1, 2012:
		Total			Income from
		revenues (1)			continuing operations (1)
	Supplemental pro forma information for the three months ended September 30, 2013	$	269,098		$	43,063
	Supplemental pro forma information for the three months ended September 30, 2012	$	258,906		$	43,223
	Supplemental pro forma information for the nine months ended September 30, 2013	$	767,733		$	153,151
	Supplemental pro forma information for the nine months ended September 30, 2012	$	758,130		$	96,703
	-1	This unaudited pro forma supplemental information does not purport to be indicative of what the Company's operating results would have been had these transactions occurred on January 1, 2012, and may not be indicative of future operating results. The Company has excluded remeasurement gains and acquisition costs from these pro forma results as they are considered significant non-recurring adjustments directly attributable to these transactions.

RelatedParty_Transactions_Tabl

Related-Party Transactions: (Tables)	9 Months Ended
	Sep. 30, 2013
Related Party Transactions [Abstract]	'
Schedule of fees charged to unconsolidated joint ventures	'
	The following are fees charged to unconsolidated joint ventures:
		For the Three Months Ended September 30,				For the Nine Months Ended September 30,
		2013		2012		2013		2012
	Management Fees	$	5,286	$	5,861	$	16,286	$	17,862
	Development and Leasing Fees	3,810		3,677		8,284		9,764
		$	9,096	$	9,538	$	24,570	$	27,626

Share_and_UnitBased_Plans_Tabl

Share and Unit-Based Plans: (Tables)	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Compensation cost under the share and unit-based plans	'
	The following summarizes the compensation cost under the share and unit-based plans:
		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
		2013			2012			2013				2012
	LTIP Units	$	4,743		$	2,778		$	12,393			$	6,646
	Stock awards	121			125			353				345
	Stock units	674			383			3,165				2,991
	Stock options	4			18			12				18
	Stock appreciation rights ("SARs")	—			210			—				291
	Phantom stock units	248			211			735				721
		$	5,790		$	3,725		$	16,658			$	11,012
Summary of activity of non-vested LTIP Units, stock awards, phantom stock and stock units	'
	The following table summarizes the activity of the non-vested LTIP Units, stock awards, phantom stock units and stock units:
		LTIP Units					Stock Awards							Phantom Stock Units				Stock Units
		Units		Value(1)			Shares			Value(1)				Units		Value(1)		Units		Value(1)
	Balance at January 1, 2013	200,000		$	38.63		20,924			$	49.36			—		$	—	114,677		$	52.19
	Granted	332,189		49.67			8,963			61.84				32,063		58.94		67,920		62.01
	Vested	(200,000	)	38.63			(10,886	)		46.7				(12,377	)	59.38		(45,279	)	51.29
	Forfeited	—		—			—			—				—		—		—		—
	Balance at September 30, 2013	332,189		$	49.67		19,001			$	56.77			19,686		$	58.66	137,318		$	57.24
	-1	Value represents the weighted-average grant date fair value.
Summary of activity of SARs and stock options outstanding	'
	The following table summarizes the activity of the SARs and stock options outstanding:
		SARs					Stock Options
		Shares		Value(1)			Shares			Value(1)
	Balance at January 1, 2013	1,164,185		$	56.66		12,768			$	54.69
	Granted	—		—			—			—
	Exercised	(93,194	)	56.63			(2,700	)		36.51
	Forfeited	—		—			—			—
	Balance at September 30, 2013	1,070,991		$	56.66		10,068			$	59.57
	-1	Value represents the weighted-average exercise price.

Income_Taxes_Tables

Income Taxes: (Tables)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Schedule of income tax benefit of TRSs	'
	The income tax benefit of the TRSs is as follows:
		For the Three Months Ended September 30,					For the Nine Months Ended September 30,
		2013			2012		2013			2012
	Current	$	(79	)	$	—	$	(235	)	$	—
	Deferred	622			934		2,498			2,159
	Income tax benefit	$	543		$	934	$	2,263		$	2,159

Organization_Details

Organization: (Details)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
	entity
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Ownership interest in operating partnership (as a percent)	94.00%	93.00%
Number of management companies (in entities)	7	'

Earnings_per_Share_EPS_Details

Earnings per Share ("EPS"): (Details) (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
Numerator	'		'		'		'
Income from continuing operations	$42,787		$44,925		$154,123		$99,166
(Loss) income from discontinued operations	-1,962		2,350		144,047		80,928
Net income attributable to noncontrolling interests	-2,702		-3,382		-22,958		-16,915
Net income attributable to the Company	38,123		43,893		275,212		163,179
Allocation of earnings to participating securities	-80		-63		-257		-443
Numerator for basic earnings per share—net income attributable to common stockholders	38,043		43,830		274,955		162,736
Numerator for diluted earnings per share-net income (loss) available to common stockholders	$38,043		$43,830		$274,955		$162,736
Denominator (in shares)	'		'		'		'
Denominator for basic earnings per share—weighted average number of common shares outstanding	140,712		134,220		139,219		133,091
Effect of dilutive securities:(1)	'		'		'		'
Stock warrants	0	[1]	64	[1]	0	[1]	78	[1]
Share and unit-based compensation plans	61	[1]	46	[1]	101	[1]	18	[1]
Denominator for diluted earnings per share—weighted average number of common shares outstanding	140,773	[1]	134,330	[1]	139,320	[1]	133,187	[1]
Earnings per common share—basic: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.28		$0.31		$1		$0.66
Discontinued operations	($0.01)		$0.02		$0.97		$0.56
Net income attributable to common stockholders	$0.27		$0.33		$1.97		$1.22
Earnings per common share—diluted: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.28		$0.31		$1		$0.66
Discontinued operations	($0.01)		$0.02		$0.97		$0.56
Net income attributable to common stockholders	$0.27		$0.33		$1.97		$1.22
[1]	The convertible senior notes ("Senior Notes") are excluded from diluted EPS for the nine months ended September 30, 2012 as their impact was antidilutive. The Senior Notes were paid off in full on March 15, 2012 (See Note 10—Bank and Other Notes Payable).Diluted EPS excludes 184,304 convertible preferred units for the three months ended September 30, 2013 and 2012, and 184,304 and 197,183 convertible preferred units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.Diluted EPS excludes 9,621,313 and 10,769,552 Operating Partnership units ("OP Units") for the three months ended September 30, 2013 and 2012, respectively, and 9,920,197 and 11,069,129 OP Units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.

Earnings_per_Share_EPS_Details1

Earnings per Share ("EPS"): (Details 2)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Convertible non-participating preferred units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	184,304	184,304	184,304	197,183
Partnership unit	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9,621,313	10,769,552	9,920,197	11,069,129

Investments_in_Unconsolidated_2

Investments in Unconsolidated Joint Ventures: (Details) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

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

Oct. 03, 2012

Oct. 26, 2012

Mar. 30, 2012

Sep. 30, 2012

Mar. 30, 2012

Sep. 30, 2012

Mar. 30, 2012

Sep. 30, 2012

31-May-12

Sep. 30, 2012

Aug. 10, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 17, 2013

Sep. 16, 2013

Sep. 30, 2013

Aug. 01, 2013

29-May-13

Sep. 30, 2013

Sep. 30, 2013

Jun. 12, 2013

Sep. 30, 2013

FlatIron Crossing

Arrowhead Towne Center

Chandler Village Center, LLC

Chandler Village Center, LLC

Chandler Festival

Chandler Festival

SanTan Village Power Center

SanTan Village Power Center

Chandler Gateway

Chandler Gateway

NorthPark Center

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

Camelback Colonnade

Camelback Colonnade

Redmond Town Center

Redmond Town Center

Redmond Town Center

Redmond Town Center

Redmond Town Center

Kitsap Mall

Kitsap Mall

sqft

sqft

sqft

sqft

sqft

sqft

sqft

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

sqft

sqft

sqft

Investments in unconsolidated joint ventures:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership interest sold

'

'

'

'

'

'

50.00%

'

50.00%

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on remeasurement, sale or write down of assets, net

$38,104

($28)

$183,154

$22,938

'

'

'

'

'

'

$23,294

'

'

'

'

$38,432

$0

$182,781

($10)

'

'

'

$38,471

$89,155

'

'

$55,155

'

Proceeds from sale of assets

'

'

327,059

130,691

'

'

6,045

'

16,183

'

'

'

4,921

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage notes payable settled by deed-in-lieu of foreclosure

'

'

84,000

185,000

'

'

8,750

'

14,792

'

'

'

9,394

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

'

'

'

1,435,000

1,196,000

273,000

'

500,000

'

491,000

'

260,000

'

1,946,000

'

'

'

'

'

'

'

695,000

582,000

'

'

846,000

'

Ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

73.20%

'

'

'

'

'

'

'

Purchase price on acquisition

'

'

'

'

310,397

144,400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from sale of property

'

'

'

'

'

'

'

'

'

'

54,780

'

'

'

'

'

'

'

'

'

'

'

127,000

185,000

'

'

127,000

'

Purchase price funded by cash payment on acquisition

'

'

'

'

195,900

69,025

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase price paid through assumption of debt by the Company

'

'

109,858

0

114,497

75,375

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consideration received on sale of joint venture interest

'

'

'

'

'

'

14,795

'

30,975

'

'

'

14,315

'

118,810

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of investments in unconsolidated entity

'

'

'

'

'

'

'

8,185

'

12,347

'

'

'

3,365

24,590

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional ownership interest acquired (as a percent)

'

'

'

'

75.00%

33.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

67.50%

'

'

'

'

'

'

'

'

Loan paid off

'

'

'

'

'

'

'

'

'

'

45,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash distributed to the partners

'

'

'

'

'

'

'

'

'

'

9,780

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of property, pro rata share

'

'

'

'

'

'

'

'

'

'

'

11,502

'

'

'

'

'

'

'

'

'

18,263

'

'

18,263

44,424

'

28,129

Gain on sale of property, pro rata share included in net income attributable to noncontrolling interests

'

'

'

'

'

'

'

'

'

'

'

($3,565)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments_in_Unconsolidated_3

Investments in Unconsolidated Joint Ventures: (Details 2) (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
Assets:	'		'	'		'	'
Properties, net	$3,454,127	[1]	'	$3,454,127	[1]	'	$3,653,631	[1]
Other assets	316,985	[1]	'	316,985	[1]	'	411,862	[1]
Total assets	3,771,112	[1]	'	3,771,112	[1]	'	4,065,493	[1]
Liabilities and partners' capital:	'		'	'		'	'
Mortgage notes payable	3,648,498	[2]	'	3,648,498	[2]	'	3,240,723	[2]
Other liabilities	196,927		'	196,927		'	148,711
Company's (deficit) capital	-72,153		'	-72,153		'	304,477
Outside partners' (deficit) capital	-2,160		'	-2,160		'	371,582
Total liabilities and partners' capital	3,771,112		'	3,771,112		'	4,065,493
Investments in unconsolidated joint ventures:	'		'	'		'	'
Company's (deficit) capital	-72,153		'	-72,153		'	304,477
Basis adjustment	521,151	[3]	'	521,151	[3]	'	516,833	[3]
Assets—Investments in unconsolidated joint ventures	706,450		'	706,450		'	974,258
Liabilities—Distributions in excess of investments in unconsolidated joint ventures	-257,452		'	-257,452		'	-152,948
Investments in unconsolidated joint ventures	448,998		'	448,998		'	821,310
Mortgage notes payable that could become recourse debt to the Company	47,040		'	47,040		'	51,171
Indemnity of guaranteed amount	21,270		'	21,270		'	21,270
Amortization of difference between cost of investments and book value of underlying equity	3,860		3,136	9,753		6,211	'
Revenues:	'		'	'		'	'
Minimum rents	102,710		124,374	319,175		397,560	'
Percentage rents	3,498		5,284	10,065		13,968	'
Tenant recoveries	51,780		63,094	156,841		196,761	'
Other	9,739		11,171	32,983		33,404	'
Total revenues	167,727		203,923	519,064		641,693	'
Expenses:	'		'	'		'	'
Shopping center and operating expenses	57,975		69,988	174,654		224,233	'
Interest expense	35,114		48,080	107,051		157,091	'
Depreciation and amortization	36,323		44,783	112,004		138,419	'
Total operating expenses	129,412		162,851	393,709		519,743	'
Gain (loss) on remeasurement, sale or write down of assets, net	38,104		-28	183,154		22,938	'
Gain on early extinguishment of debt	14		'	14		'	'
Net income	76,433		41,044	308,523		144,888	'
Company's equity in net income	35,161		19,315	145,477		68,624	'
Northwestern Mutual Life (NML)	'		'	'		'	'
Investments in unconsolidated joint ventures:	'		'	'		'	'
Mortgage notes payable to affiliate	715,332		'	715,332		'	436,857
Interest expense on borrowings from related party	7,920		10,980	21,717		32,974	'
Pacific Premier Retail LP	'		'	'		'	'
Assets:	'		'	'		'	'
Total assets	776,186		'	776,186		'	1,039,742
Investments in unconsolidated joint ventures:	'		'	'		'	'
Total liabilities	818,222		'	818,222		'	942,370
Revenues:	'		'	'		'	'
Minimum rents	27,426		32,718	91,779		98,812	'
Percentage rents	572		837	2,155		2,571	'
Tenant recoveries	12,115		14,091	40,555		41,967	'
Other	1,086		1,138	3,980		3,665	'
Total revenues	41,199		48,784	138,469		147,015	'
Expenses:	'		'	'		'	'
Shopping center and operating expenses	12,231		15,075	40,948		43,385	'
Interest expense	10,251		12,904	33,118		39,405	'
Depreciation and amortization	9,067		10,905	30,697		31,926	'
Total operating expenses	31,549		38,884	104,763		114,716	'
Gain (loss) on remeasurement, sale or write down of assets, net	38,432		0	182,781		-10	'
Gain on early extinguishment of debt	0		'	0		'	'
Net income	48,082		9,900	216,487		32,289	'
Company's equity in net income	21,567		5,035	105,684		16,422	'
Tysons Corner LLC	'		'	'		'	'
Assets:	'		'	'		'	'
Total assets	467,632		'	467,632		'	409,622
Investments in unconsolidated joint ventures:	'		'	'		'	'
Total liabilities	337,804		'	337,804		'	329,145
Revenues:	'		'	'		'	'
Minimum rents	15,344		15,847	46,526		47,149	'
Percentage rents	-12		233	734		866	'
Tenant recoveries	11,304		11,340	34,025		32,969	'
Other	510		618	2,080		1,964	'
Total revenues	27,146		28,038	83,365		82,948	'
Expenses:	'		'	'		'	'
Shopping center and operating expenses	9,818		8,760	26,819		25,834	'
Interest expense	3,801		2,838	7,825		8,902	'
Depreciation and amortization	4,568		5,094	13,499		15,279	'
Total operating expenses	18,187		16,692	48,143		50,015	'
Gain (loss) on remeasurement, sale or write down of assets, net	0		0	0		0	'
Gain on early extinguishment of debt	14		'	14		'	'
Net income	8,973		11,346	35,236		32,933	'
Company's equity in net income	2,919		4,372	12,957		12,721	'
Other Joint Ventures	'		'	'		'	'
Revenues:	'		'	'		'	'
Minimum rents	59,940		75,809	180,870		251,599	'
Percentage rents	2,938		4,214	7,176		10,531	'
Tenant recoveries	28,361		37,663	82,261		121,825	'
Other	8,143		9,415	26,923		27,775	'
Total revenues	99,382		127,101	297,230		411,730	'
Expenses:	'		'	'		'	'
Shopping center and operating expenses	35,926		46,153	106,887		155,014	'
Interest expense	21,062		32,338	66,108		108,784	'
Depreciation and amortization	22,688		28,784	67,808		91,214	'
Total operating expenses	79,676		107,275	240,803		355,012	'
Gain (loss) on remeasurement, sale or write down of assets, net	-328		-28	373		22,948	'
Gain on early extinguishment of debt	0		'	0		'	'
Net income	19,378		19,798	56,800		79,666	'
Company's equity in net income	$10,675		$9,908	$26,836		$39,481	'
[1]	These amounts include the assets and liabilities of the following joint ventures as of September 30, 2013 and December 31, 2012: PacificPremierRetail LP TysonsCorner LLCAs of September 30, 2013: Total Assets$776,186 $467,632Total Liabilities$818,222 $337,804As of December 31, 2012: Total Assets$1,039,742 $409,622Total Liabilities$942,370 $329,145
[2]	Certain mortgage notes payable could become recourse debt to the Company should the joint venture be unable to discharge the obligations of the related debt. As of September 30, 2013 and December 31, 2012, a total of $47,040 and $51,171, respectively, could become recourse debt to the Company. As of September 30, 2013 and December 31, 2012, the Company had indemnity agreements from joint venture partners for $21,270 of the guaranteed amount.Included in mortgage notes payable are amounts due to affiliates of Northwestern Mutual Life ("NML") of $715,332 and $436,857 as of September 30, 2013 and December 31, 2012, respectively. NML is considered a related party because it is a joint venture partner with the Company in Macerich Northwestern Associates—Broadway Plaza. Interest expense incurred on these borrowings amounted to $7,920 and $10,980 for the three months ended September 30, 2013 and 2012, respectively, and $21,717 and $32,974 for the nine months ended September 30, 2013 and 2012, respectively.
[3]	The Company amortizes the difference between the cost of its investments in unconsolidated joint ventures and the book value of the underlying equity into income on a straight-line basis consistent with the lives of the underlying assets. The amortization of this difference was $3,860 and $3,136 for the three months ended September 30, 2013 and 2012, respectively, and $9,753 and $6,211 for the nine months ended September 30, 2013 and 2012, respectively.

Property_Details

Property: (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	Sep. 17, 2013
	property		property			Camelback Colonnade
Acquisition	'	'	'	'	'	'
Land	$1,751,611	'	$1,751,611	'	$1,572,621	'
Buildings and improvements	6,642,696	'	6,642,696	'	6,417,674	'
Tenant improvements	554,528	'	554,528	'	496,203	'
Equipment and furnishings	153,146	'	153,146	'	149,959	'
Construction in progress	239,106	'	239,106	'	376,249	'
Total	9,341,087	'	9,341,087	'	9,012,706	'
Less accumulated depreciation	-1,607,158	'	-1,607,158	'	-1,533,160	'
Property, net	7,733,929	'	7,733,929	'	7,479,546	'
Depreciation expenses	71,136	55,086	207,877	164,369	'	'
Write off of development cost	-126	-2,623	-1,497	-8,549	'	'
Gain on remeasurement	'	'	'	'	'	36,341
Gain (loss) on the sale of assets	'	'	5,401	'	'	'
Impairment loss	'	'	'	'	'	($34,452)
Number of Real Estate Properties	2	'	2	'	'	'

Marketable_Securities_Details

Marketable Securities: (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]	'	'
Government debt securities, at par value	$0	$23,769
Less discount	0	-102
Government debt securities, net	0	23,667
Unrealized gain	0	685
Fair value (Level 1 measurement)	$0	$24,352

Tenant_and_Other_Receivables_n1

Tenant and Other Receivables, net: (Details) (USD $)

9 Months Ended

3 Months Ended

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

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Oct. 08, 2013

Accrued percentage rents

Accrued percentage rents

Note receivable secured by deed of trust

Note receivable secured by deed of trust

Related Parties Note Receivable, JR Holdings [Member]

Related Parties Note Receivable, JR Holdings [Member]

Related Parties Note Receivable, JR Holdings [Member]

Related Parties Note Receivable, JR Holdings [Member]

Subsequent event

Related Parties Note Receivable, JR Holdings [Member]

Components of tenant and other receivables, net

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for doubtful accounts

$2,672

'

$2,374

'

'

'

'

'

'

'

'

'

Accounts receivable

'

'

'

2,180

9,168

'

0

'

'

'

'

'

Deferred rent receivable due to straight-line rent adjustments

53,523

'

49,129

'

'

'

'

'

'

'

'

'

Distributions to Co-venture Partner

14,496

34,615

'

'

'

'

'

'

'

'

'

0

Note receivable, interest rate (as a percent)

'

'

'

'

'

5.50%

'

'

'

'

'

'

Notes receivable

'

'

'

'

'

'

3,963

4,427

'

4,427

'

'

Interest income on notes receivable

'

'

'

'

'

'

'

$156

$130

$464

$388

'

Deferred_Charges_and_Other_Ass2

Deferred Charges and Other Assets, 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	Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'		'	'		'	'
Leasing	$226,891		'	$226,891		'	$234,498
Financing	52,038		'	52,038		'	42,868
Intangible assets:	'		'	'		'	'
In-place lease values	199,274		'	199,274		'	175,735
Leasing commissions and legal costs	50,020		'	50,020		'	46,419
Above-market leases	116,717		'	116,717		'	118,033
Deferred tax assets	32,020		'	32,020		'	33,414
Deferred compensation plan assets	29,126		'	29,126		'	24,670
Acquisition deposit	0		'	0		'	30,000
Other assets	68,180		'	68,180		'	72,811
Deferred charges and other assets, gross	774,266		'	774,266		'	778,448
Less accumulated amortization	-227,684	[1]	'	-227,684	[1]	'	-213,318	[1]
Deferred charges and other assets, net	546,582		'	546,582		'	565,130
Accumulated amortization for intangible assets	80,747		'	80,747		'	62,792
Amortization expense for intangible assets	$12,228		$6,323	$40,611		$22,529	'
[1]	Accumulated amortization includes $80,747 and $62,792 relating to in-place lease values, leasing commissions and legal costs at September 30, 2013 and December 31, 2012, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $12,228 and $6,323 for the three months ended September 30, 2013 and 2012, respectively, and $40,611 and $22,529 for the nine months ended September 30, 2013 and 2012, respectively.

Mortgage_Notes_Payable_Details

Mortgage Notes Payable: (Details) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

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

Dec. 31, 2012

Aug. 01, 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

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

30-May-13

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Apr. 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

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Apr. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2009

Jan. 31, 2013

Jan. 24, 2013

Jan. 03, 2013

Nov. 28, 2012

Arrowhead Towne Center

Arrowhead Towne Center

Camelback Colonnade

Camelback Colonnade

Chandler Fashion Center

Chandler Fashion Center

Chesterfield Towne Center

Chesterfield Towne Center

Danbury Fair Mall

Danbury Fair Mall

Deptford Mall One

Deptford Mall One

Deptford Mall Two

Deptford Mall Two

Eastland Mall

Eastland Mall

Fashion Outlets of Chicago

Fashion Outlets of Chicago

Fashion Outlets of Niagara Falls USA

Fashion Outlets of Niagara Falls USA

Fiesta Mall

Fiesta Mall

Flagstaff Mall

Flagstaff Mall

FlatIron Crossing

FlatIron Crossing

FlatIron Crossing

Freehold Raceway Mall

Freehold Raceway Mall

Fresno Fashion Fair

Fresno Fashion Fair

Great Northern Mall

Great Northern Mall

Green Acres Mall

Green Acres Mall

Kings Plaza

Kings Plaza

The Mall at Northgate

The Mall at Northgate

The Oaks

The Oaks

Pacific View

Pacific View

Paradise Valley Mall

Paradise Valley Mall

Promenade at Casa Grande

Promenade at Casa Grande

Promenade at Casa Grande

Promenade at Casa Grande

Salisbury Center

Salisbury Center

Santa Monica Place

Santa Monica Place

SanTan Village Regional Center

SanTan Village Regional Center

SanTan Village Regional Center

South Plains Mall

South Plains Mall

South Towne center

South Towne center

South Towne center

Towne Mall

Towne Mall

Tucson La Encantada

Tucson La Encantada

Twenty Ninth Street

Twenty Ninth Street

Valley Mall

Valley Mall

Valley River Center

Valley River Center

Mall of Victor Valley

Mall of Victor Valley

Vintage Faire Mall

Vintage Faire Mall

Vintage Faire Mall

Westside Pavilion

Westside Pavilion

Wilton Mall

Wilton Mall

Freehold Raceway Mall and Chandler Fashion Center

Green Acres Mall

Green Acres Mall

Kings Plaza

Kings Plaza

Low end of range

High end of range

sqft

sqft

Mortgage loans payable on real estate

'

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Property area (in square feet)

'

'

'

'

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'

'

'

'

1,792,000

'

1,199,000

Percentage of oan assumed by third party (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

49.90%

'

'

'

'

Carrying amount of mortgage notes, related party

$270,715

[1]

'

'

$270,715

[1]

'

$274,609

[1]

$0

[1]

$0

[1]

$0

[1],[2]

$0

[1],[2]

$0

[1],[3]

$0

[1],[3]

$0

[1]

$0

[1]

$117,810

[1]

$119,823

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1],[4]

$0

[1],[4]

$0

[1]

$0

[1]

$0

[1],[5]

$0

[1],[5]

$0

[1]

$0

[1]

'

$0

[1],[6]

$0

[1],[6]

$0

[1],[3]

$0

[1],[3]

$79,701

[1]

$80,601

[1]

$0

[1]

$0

[1]

$0

[1],[7]

$0

[1],[7]

$0

[1],[8]

$0

[1],[8]

$0

[1],[9]

$0

[1],[9]

$0

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1],[10]

$0

[1],[10]

$0

[1],[11]

$0

[1],[11]

'

'

$0

[1]

$0

[1]

$0

[1]

$0

[1]

'

$0

[1],[12]

$0

[1],[12]

$0

[1]

$0

[1]

'

$0

[1],[13]

$0

[1],[13]

$0

[1]

$0

[1]

$73,204

[1]

$74,185

[1]

$0

[1],[14]

$0

[1],[14]

$0

[1]

$0

[1]

$0

[1]

$0

[1]

$0

[1],[15]

$0

[1],[15]

'

$0

[1],[13]

$0

[1],[13]

$0

[1]

$0

[1]

$0

[1],[16]

$0

[1],[16]

'

'

'

'

'

Carrying amount of mortgage notes, other

4,209,900

[1]

'

'

4,209,900

[1]

'

4,162,734

[1]

237,832

[1]

243,176

[1]

49,416

[1],[2]

0

[1],[2]

200,000

[1],[3]

200,000

[1],[3]

110,000

[1]

110,000

[1]

117,809

[1]

119,823

[1]

202,556

[1]

205,000

[1]

14,616

[1]

14,800

[1]

168,000

[1]

168,000

[1]

81,472

[1],[4]

9,165

[1],[4]

124,682

[1]

126,584

[1]

0

[1],[5]

84,000

[1],[5]

37,000

[1]

37,000

[1]

'

0

[1],[6]

173,561

[1],[6]

232,900

[1],[3]

232,900

[1],[3]

79,701

[1]

80,602

[1]

35,719

[1]

36,395

[1]

321,407

[1],[7]

0

[1],[7]

492,954

[1],[8]

354,000

[1],[8]

64,000

[1],[9]

64,000

[1],[9]

215,224

[1]

218,119

[1]

136,478

[1]

138,367

[1]

0

[1],[10]

81,000

[1],[10]

64,226

[1],[11]

73,700

[1],[11]

'

'

115,000

[1]

115,000

[1]

236,701

[1]

240,000

[1]

'

137,321

[1],[12]

138,087

[1],[12]

100,221

[1]

101,340

[1]

'

0

[1],[13]

85,247

[1],[13]

23,092

[1]

23,369

[1]

0

[1]

0

[1]

107,000

[1],[14]

107,000

[1],[14]

42,345

[1]

42,891

[1]

120,000

[1]

120,000

[1]

90,000

[1],[15]

90,000

[1],[15]

'

99,431

[1],[13]

135,000

[1],[13]

152,797

[1]

154,608

[1]

0

[1],[16]

40,000

[1],[16]

'

'

'

'

'

Effective interest rate (as a percent)

'

'

'

'

'

'

2.76%

[17]

'

2.16%

[12],[17]

'

3.77%

[17],[3]

'

4.80%

[17]

'

5.53%

[17]

'

3.76%

[17]

'

6.46%

[17]

'

5.79%

[17]

'

2.98%

[17],[4]

3.00%

4.89%

[17]

'

'

'

5.03%

[17]

'

'

'

'

4.20%

[17],[3]

'

6.76%

[17]

'

5.19%

[17]

'

3.61%

[17],[7]

'

3.67%

[17],[8]

'

3.06%

[17],[9]

3.09%

4.14%

[17]

'

4.08%

[17]

'

'

'

5.21%

[11],[17]

5.21%

[11],[17]

'

'

5.83%

[17]

'

2.99%

[17]

'

'

3.14%

[12],[17]

'

6.58%

[17]

'

'

'

'

4.48%

[17]

'

4.23%

[17]

'

3.02%

[14],[17]

3.04%

5.85%

[17]

'

5.59%

[17]

'

2.74%

[15],[17]

2.12%

2.50%

5.81%

[13],[17]

'

4.49%

[17]

'

'

'

'

'

'

'

'

Monthly debt service

'

'

'

'

'

'

1,131

[18]

'

178

[18],[2]

'

625

[18],[3]

'

573

[18]

'

1,538

[18]

'

947

[18]

'

101

[18]

'

811

[18]

'

182

[18],[4]

'

727

[18]

'

'

'

151

[18]

'

'

'

'

805

[18],[3]

'

1,104

[18]

'

234

[18]

'

1,447

[18],[7]

'

2,229

[18],[8]

'

130

[18],[9]

'

1,064

[18]

'

668

[18]

'

'

'

245

[11],[18]

'

'

'

555

[18]

'

1,004

[18]

'

'

589

[12],[18]

'

648

[18]

'

'

'

'

117

[18]

'

368

[18]

'

251

[14],[18]

'

280

[18]

'

558

[18]

'

183

[15],[18]

'

'

586

[13],[18]

'

783

[18]

'

'

'

'

'

'

'

'

Debt premiums

'

'

'

'

'

'

15,411

17,716

2,416

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,574

7,270

'

'

'

'

'

0

5,232

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt discounts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-15

-19

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-5

-28

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-241

-307

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt premiums (discounts), net

24,140

'

'

24,140

'

29,864

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage notes payable, maximum borrowings

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

325,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on extinguishment of debt

-6

0

'

1,938

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,791

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-853

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate basis (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'LIBOR

'

'

'

'

'

'

'

'LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'LIBOR

'

'

'

'

'

'LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate spread over basis (as a percent)

'

'

'

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25%

'

'

'

'

'

'

'

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.63%

'

'

'

'

'

2.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt interest rate floor (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage notes payable which could become recourse

205,555

'

'

205,555

'

213,466

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Guarantee amounts for indemnity agreements from consolidated joint venture partners

21,263

'

'

21,263

'

28,208

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense capitalized

2,887

'

2,984

8,227

7,899

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of mortgage notes payable

4,558,549

'

'

4,558,549

'

4,567,658

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period of loan maturities expected to be refinanced, restructured, extended or paid-off

'

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of additional borrowing

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$140,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$138,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$15,200

'

'

'

'

'

'

'

$225,000

$100,000

$146,000

$354,000

[1]

The mortgage notes payable balances include the unamortized debt premiums (discounts). Debt premiums (discounts) represent the excess (deficiency) of the fair value of debt over (under) the principal value of debt assumed in various acquisitions and are amortized to interest expense over the remaining term of the related debt in a manner that approximates the effective interest method.Debt premiums (discounts) consist of the following:Property Pledged as CollateralSeptember 30, 2013 December 31, 2012Arrowhead Towne Center$15,411 $17,716Camelback Colonnade2,416 —Deptford Mall(15) (19)Fashion Outlets of Niagara Falls USA6,574 7,270FlatIron Crossing— 5,232Great Northern Mall(5) (28)Valley Mall(241) (307) $24,140 $29,864

[2]

On September 17, 2013, the Company obtained control of the consolidated joint venture as a result of the Camelback Colonnade Restructuring (See Note 14—Acquisitions). The loan on the property bears interest at an effective rate of 2.16% and matures on October 12, 2015.

[3]

A 49.9% interest in the loan has been assumed by a third party in connection with a co-venture arrangement (See Note 11—Co-Venture Arrangement).

[4]

The construction loan on the property allows for borrowings up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At September 30, 2013 and December 31, 2012, the total interest rate was 2.98% and 3.00%, respectively.

[5]

On September 30, 2013, the Company conveyed the property to the lender by a deed-in-lieu of foreclosure. As a result, the Company has been discharged from this non-recourse loan (See Note 15—Discontinued Operations).

[6]

On June 4, 2013, the loan was paid off in full, which resulted in a gain of $2,791 on the early extinguishment of debt.

[7]

On January 24, 2013, in connection with the Company's acquisition of Green Acres Mall (See Note 14—Acquisitions), the Company placed a new loan on the property that allowed for borrowings of up to $325,000, bears interest at an effective interest rate of 3.61% and matures on February 3, 2021. Concurrent with the acquisition, the Company borrowed $100,000 on the loan. On January 31, 2013, the Company exercised its option to borrow an additional $225,000 on the loan.

[8]

On January 3, 2013, the Company exercised its option to borrow an additional $146,000 on the loan.

[9]

The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At September 30, 2013 and December 31, 2012, the total interest rate was 3.06% and 3.09%, respectively.

[10]

On August 26, 2013, the loan was paid off in full

[11]

The loan bears interest at LIBOR plus 4.0% with a LIBOR rate floor of 0.50% and matures on December 30, 2013. At September 30, 2013 and December 31, 2012, the total interest rate was 5.21%.

[12]

On May 30, 2013, the consolidated joint venture replaced the existing loan on the property with a new $138,000 loan that bears interest at 3.14% and matures on June 1, 2019.

[13]

On April 30, 2013, the existing loan on Vintage Faire Mall was paid off in full, resulting in a loss of $853 on the early extinguishment of debt. Concurrently, the loan on South Towne Center was assumed by Vintage Faire Mall. An additional $15,200 loan was added to the assumed loan that bears interest at 2.50% and matures on November 5, 2015.

[14]

The loan bears interest at LIBOR plus 2.63% and matures on January 18, 2016. At September 30, 2013 and December 31, 2012, the total interest rate was 3.02% and 3.04%, respectively.

[15]

The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At September 30, 2013 and December 31, 2012, the total interest rate was 2.74% and 2.12%, respectively.

[16]

On August 1, 2013, the loan was paid off in full

[17]

The interest rate disclosed represents the effective interest rate, including the debt premiums (discounts) and deferred finance costs.

[18]

The monthly debt service represents the payment of principal and interest.

Deferred_Charges_and_Other_Ass3

Deferred Charges and Other Assets, net: (Details 2) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Allocated values of leases	'		'
Less accumulated amortization	($80,747)		($62,792)
Above-Market Leases	'		'
Allocated values of leases	'		'
Original allocated value	116,717		118,033
Less accumulated amortization	-43,047		-46,361
Allocated value net	73,670		71,672
Below-Market Leases	'		'
Allocated values of leases	'		'
Original allocated value	186,600	[1]	164,489	[1]
Less accumulated amortization	-74,056	[1]	-77,131	[1]
Allocated value net	$112,544	[1]	$87,358	[1]
[1]	Below-market leases are included in other accrued liabilities.

Bank_and_Other_Notes_Payable_B

Bank and Other Notes Payable: Bank and Other Notes Payable: (Details) (USD $)

9 Months Ended

0 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Mar. 15, 2012

Mar. 16, 2007

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Aug. 06, 2013

2-May-11

Dec. 08, 2011

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Mar. 29, 2013

Sep. 30, 2013

Aug. 06, 2013

Sep. 30, 2013

Dec. 08, 2011

Aug. 06, 2013

Sep. 30, 2013

Dec. 08, 2011

Convertible Notes Payable

Convertible Notes Payable

Convertible Notes Payable

Line of Credit

Line of Credit

Line of Credit

Line of Credit

Unsecured term loan

Unsecured term loan

Unsecured term loan

Greeley Note

Prasada Note

Prasada Note

Low end of range

Low end of range

Low end of range

High end of range

High end of range

High end of range

Line of Credit

Line of Credit

Unsecured term loan

Line of Credit

Line of Credit

Unsecured term loan

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of additional borrowing

'

'

$950,000

'

'

'

'

'

$125,000

$125,000

'

'

$13,330

'

'

'

'

'

'

'

Interest rate on debt (as a percent)

'

'

'

3.25%

'

'

'

'

'

'

'

'

5.25%

'

'

'

'

'

'

'

Maturities of subordinated debt

'

439,318

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving line of credit

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate spread over basis (as a percent)

1.50%

'

'

'

'

'

'

'

'

2.20%

'

'

'

'

1.38%

1.75%

1.95%

2.00%

3.00%

3.20%

Expansion borrowing capacity

'

'

'

'

2,000,000

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of extension (in years)

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate basis (as a percent)

'

'

'

'

'

'

'

'

'LIBOR

'LIBOR

'

'

'

'

'

'

'

'

'

'

Outstanding borrowings under the line of credit

'

'

'

'

145,000

675,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit, average interest rate (as a percent)

'

'

'

'

1.86%

2.76%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of outstanding line of credit

'

'

'

'

137,160

675,107

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

2.53%

2.57%

'

'

'

'

'

'

'

'

'

Debt, carrying value

'

'

'

'

'

'

'

'

'

'

'

24,027

'

12,937

'

'

'

'

'

'

Debt, fair value

'

'

'

'

'

'

'

'

'

$118,703

$121,821

'

'

$13,612

'

'

'

'

'

'

CoVenture_Arrangement_Details

Co-Venture Arrangement: (Details) (USD $)	9 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2009	Sep. 30, 2009
				Freehold Raceway Mall and Chandler Fashion Center	Freehold Raceway Mall and Chandler Fashion Center
Co-Venture Arrangement:	'	'	'	'	'
Percentage of oan assumed by third party (as a percent)	'	'	'	'	49.90%
Number of common shares available for purchase under warrant (in shares)	'	'	'	935,358	'
Exercise price of stock warrants (in dollars per share)	'	'	'	46.68	'
Cash proceeds for sale of interest in property	$327,059	$130,691	'	$174,650	'
Proceeds attributed to the warrants	'	'	'	6,496	'
Co-venture obligation	$83,951	'	$92,215	$168,154	'

Noncontrolling_Interests_Detai

Noncontrolling Interests: (Details) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Noncontrolling Interest [Abstract]	'	'
Ownership interest in operating partnership (as a percent)	94.00%	93.00%
Limited partnership interest of the operating partnership (as a percent)	6.00%	7.00%
Common stock, par value (in dollars per share)	$0.01	$0.01
Number of trading days used to calculate redemption value (in days)	'10 days	'
Redemption value of outstanding OP Units not owned by the Company	$557,651	$586,409

Stockholders_Equity_Stock_Warr

Stockholders' Equity: (Stock Warrants) (Details) (Freehold Raceway Mall and Chandler Fashion Center, USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Oct. 24, 2012	Apr. 10, 2012	Dec. 30, 2011	Sep. 30, 2009	Dec. 31, 2011
Freehold Raceway Mall and Chandler Fashion Center	'	'	'	'	'
Class of Stock [Line Items]	'	'	'	'	'
Aggregate number of common shares available for purchase under warrants	'	'	'	935,358	'
Value of stock warrants	'	'	'	$6,496	'
Exercise price of stock warrants (in dollars per share)	'	'	'	46.68	'
Exercise of stock warrants	$3,922	$3,448	$1,278	'	'
Number of common shares available for purchase under warrant (in shares)	311,786	311,786	'	'	311,786

Stockholders_Equity_ATM_Progra

Stockholders' Equity: (ATM Program) (Details) (USD $)	9 Months Ended			9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Aug. 17, 2012
				ATM Program	ATM Program	ATM Program
Warrants:	'	'	'	'	'	'
Par value of common stock (in dollars per share)	$0.01	'	$0.01	'	'	$0.01
Maximum price of common stock available to be issued	'	'	'	$149,093	'	$500,000
Maximum commission to sales agent (as a percent)	'	'	'	'	'	2.00%
Common stock sold (in shares)	'	'	'	2,456,956	2,961,903	'
Proceeds from sale	'	'	'	173,011	177,896	'
Net proceeds from stock offerings	$171,121	$175,869	'	$171,121	$175,649	'

Stockholders_Equity_Stockholde

Stockholders' Equity: Stockholders' Equity (Stock Issued to Acquire Property) (Details) (Kings Plaza, USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Nov. 28, 2012
Kings Plaza	'
Class of Stock [Line Items]	'
Value of restricted shares issued for acquisition	535,265
Purchase price funded by issuance of restricted common stock	$30,000
Number of trading days used to value restricted stock issued for acquisition	'10 days

Acquisitions_Details

Acquisitions: (Details) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

8 Months Ended

12 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

Feb. 29, 2012

Oct. 03, 2012

Oct. 26, 2012

Oct. 03, 2012

Jan. 03, 2013

Nov. 28, 2012

Jan. 31, 2013

Jan. 24, 2013

Sep. 30, 2013

Dec. 31, 2012

Apr. 25, 2013

Sep. 30, 2013

Sep. 17, 2013

Sep. 17, 2013

Sep. 16, 2013

Sep. 17, 2013

500 North Michigan Avenue:

FlatIron Crossing

Arrowhead Towne Center

Arrowhead Towne Center

Kings Plaza

Kings Plaza

Green Acres Mall

Green Acres Mall

Green Acres Mall

Green Acres Mall

Green Acres Adjacent

Camelback Colonnade

Camelback Colonnade

Camelback Colonnade

Camelback Colonnade

Camelback Colonnade

sqft

sqft

sqft

sqft

sqft

acre

sqft

Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

'

'

'

'

327,000

1,435,000

1,196,000

'

'

1,199,000

'

1,792,000

'

'

19

'

'

'

'

619,000

Ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

73.20%

'

Purchase price on acquisition

'

'

'

'

'

$70,925

$310,397

$144,400

'

'

$756,000

'

$500,000

'

'

$22,577

'

'

'

'

'

Additional ownership interest acquired (as a percent)

'

'

'

'

'

'

75.00%

33.30%

'

'

'

'

'

'

'

'

'

'

67.50%

'

'

Amount of additional borrowing

'

'

'

'

'

'

'

'

'

146,000

354,000

225,000

100,000

'

'

'

'

'

'

'

'

Ownership interest before acquisition (as a percent)

'

'

'

'

'

'

25.00%

66.70%

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership interest at completion of acquisition (as a percent)

'

'

'

'

'

'

100.00%

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

Purchase price funded by cash payment on acquisition

'

'

'

'

'

'

195,900

69,025

'

'

726,000

'

'

'

'

'

'

'

'

'

'

Purchase price funded by issuance of restricted common stock

'

'

'

'

'

'

'

'

'

'

30,000

'

'

'

'

'

'

'

'

'

'

Deposits paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000

'

'

'

'

'

'

Purchase price, balance remaining after deposit

'

'

'

'

'

'

'

'

'

'

'

'

470,000

'

'

'

'

'

'

'

'

Face amount of debt

'

'

'

'

'

'

'

'

'

'

500,000

'

325,000

'

'

'

'

'

'

'

'

Purchase price paid through assumption of debt by the Company

'

'

-109,858

0

'

'

-114,497

-75,375

'

'

'

'

'

'

'

'

'

'

'

'

'

Allocation of the fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property

'

'

'

'

'

66,033

443,391

423,349

'

'

714,589

'

477,673

'

'

'

'

98,160

'

'

'

Deferred charges, net

'

'

'

'

'

7,450

25,251

31,500

'

'

37,371

'

45,130

'

'

'

'

8,284

'

'

'

Restricted cash

'

'

'

'

'

'

'

4,009

'

'

'

'

'

'

'

'

'

1,139

'

'

'

Cash and cash equivalents

'

'

'

'

'

'

3,856

'

'

'

'

'

'

'

'

'

'

1,280

'

'

'

Tenant receivables

'

'

'

'

'

'

'

926

'

'

'

'

'

'

'

'

'

615

'

'

'

Other assets, net

'

'

'

'

'

2,143

2,101

4,234

'

'

29,282

'

19,125

'

'

'

'

380

'

'

'

Total assets acquired

'

'

'

'

'

75,626

474,599

464,018

'

'

781,242

'

541,928

'

'

'

'

109,858

'

'

'

Mortgage note payable

'

'

'

'

'

'

175,720

244,403

'

'

'

'

'

'

'

'

'

49,465

'

'

'

Accounts payable

'

'

'

'

'

'

366

815

'

'

'

'

'

'

'

'

'

54

'

'

'

Other accrued liabilities

'

'

'

'

'

4,701

11,071

10,449

'

'

25,242

'

41,928

'

'

'

'

4,752

'

'

'

Total liabilities assumed

'

'

'

'

'

4,701

187,157

255,667

'

'

25,242

'

41,928

'

'

'

'

54,271

'

'

'

Fair value of acquired net assets (at 100% ownership)

'

'

'

'

'

70,925

287,442

208,351

'

'

756,000

'

500,000

'

'

'

'

55,587

'

'

'

Business combination

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of existing ownership interest (at % ownership)

'

'

'

'

'

'

91,542

139,326

'

'

'

'

'

'

'

'

'

41,690

'

'

'

Investments in unconsolidated joint ventures

-706,450

'

-706,450

'

-974,258

'

-33,382

-23,597

'

'

'

'

'

'

'

'

'

-5,349

'

'

'

Prior gain deferral recognized

'

'

'

'

'

'

-26,067

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on remeasurement

'

'

'

'

'

'

84,227

115,729

'

'

'

'

'

'

'

'

'

36,341

'

'

'

Incremental revenue generated from acquired property

'

'

'

'

'

'

'

'

'

'

'

'

'

47,564

'

'

521

'

'

'

'

Incremental loss of acquired property

'

'

'

'

'

'

'

'

'

'

'

'

'

-563

'

'

-51

'

'

'

'

Pro forma information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total revenue

269,098

[1]

258,906

[1]

767,733

[1]

758,130

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earnings

$43,063

[1]

$43,223

[1]

$153,151

[1]

$96,703

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

This unaudited pro forma supplemental information does not purport to be indicative of what the Company's operating results would have been had these transactions occurred on January 1, 2012, and may not be indicative of future operating results. The Company has excluded remeasurement gains and acquisition costs from these pro forma results as they are considered significant non-recurring adjustments directly attributable to these transactions.

Discontinued_Operations_Detail

Discontinued Operations: (Details) (USD $)

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Apr. 30, 2012

Mar. 31, 2012

Apr. 23, 2012

Apr. 30, 2012

Sep. 30, 2013

31-May-12

31-May-12

17-May-12

31-May-13

31-May-12

Jun. 30, 2012

Jun. 28, 2012

31-May-13

Jun. 04, 2013

Jun. 04, 2013

Jun. 30, 2013

Sep. 30, 2013

Valley View Mall

Valley View Mall

Valley View Mall

The Borgata

Mervyn's

Mervyn's

Hilton Village

Hilton Village

Prescott Gateway

Prescott Gateway

Carmel Plaza

Carmel Plaza

Green Tree Mall

Northridge Mall

Rimrock Mall

Rimrock Mall and Nortridge Mall

Fiesta Mall

sqft

sqft

sqft

sqft

sqft

sqft

sqft

sqft

Discontinued Operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from sale

'

'

'

'

'

'

'

$9,150

$12,000

$20,750

$24,820

'

'

'

$52,000

'

$79,000

'

'

$230,000

'

Gain (loss) from sale

-1,281

-256

140,631

75,571

'

'

'

-1,275

-2,617

-407

3,127

'

'

'

7,844

'

59,768

'

'

82,079

'

Impairment charge

'

'

'

'

'

54,306

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-lived assets written off to fair value

'

'

'

'

'

'

33,450

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on extinguishment of debt

-6

0

1,938

0

104,023

'

'

'

'

'

'

'

16,296

'

'

'

'

'

'

'

1,401

Property area (in square feet)

'

'

'

'

'

'

'

94,000

'

'

'

80,000

'

584,000

'

112,000

793,000

890,000

603,000

'

933,000

Revenues from discontinued operations

2,524

11,580

21,855

47,861

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

(Loss) income from discontinued operations

($1,962)

$2,350

$144,047

$80,928

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments_and_Contingencies_

Commitments and Contingencies: (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	Dec. 31, 2012
Contingent Liabilities	'	'	'	'	'
Operating lease rent expense	$2,580	$2,244	$7,881	$6,329	'
Contingent liability under letters of credit	3,657	'	3,657	'	3,757
Outstanding obligations under construction agreements	$12,359	'	$12,359	'	'

RelatedParty_Transactions_Deta

Related-Party Transactions: (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
			note		note
Related party transactions	'	'	'	'	'
Interest expense, related party	$3,745	$3,815	$11,289	$11,588	'
Loans to unconsolidated joint ventures	2,736	'	2,736	'	3,345
Due from affiliates	32,299	'	32,299	'	17,068
Unconsolidated joint ventures	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest income, related party	58	63	178	191	'
Due from affiliates	5,740	'	5,740	'	4,568
Northwestern Mutual Life (NML)	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest expense payable, related party	1,246	'	1,246	'	1,264
Unconsolidated joint ventures and third-party managed properties	'	'	'	'	'
Related party transactions	'	'	'	'	'
Management Fees	5,286	5,861	16,286	17,862	'
Development and Leasing Fees	3,810	3,677	8,284	9,764	'
Fees charged to unconsolidated joint ventures and third-party managed properties	9,096	9,538	24,570	27,626	'
Related parties note receivable, AWE Talisman Company	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest income, related party	157	158	467	321	'
Number of Notes Receivable (in notes)	'	'	2	'	2,000
Note receivable, interest rate (as a percent)	5.00%	'	5.00%	'	'
Debt, carrying value	13,446	'	13,446	'	12,500
Related parties note receivable, RED Consolidated Holdings, LLC	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest income, related party	176	'	356	'	'
Due from affiliates	$13,113	'	$13,113	'	'
Note receivable, interest rate (as a percent)	5.25%	'	5.25%	'	'

Share_and_UnitBased_Plans_Deta

Share and Unit-Based Plans: (Details) (USD $)	0 Months Ended	3 Months Ended			9 Months Ended
In Thousands, except Share data, unless otherwise specified	Feb. 15, 2013	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
	employee				unit
Share and unit-based plans	'	'		'	'		'
Compensation cost under share and unit-based plans	'	$5,790		$3,725	$16,658		$11,012
Capitalized share and unit-based compensation costs	'	657		436	2,745		2,209
Non-vested share and unit based plans, weighted average exercise price	'	'		'	'		'
Forfeited (in dollars per share)	'	'		'	$0	[1]	'
Options	'	'		'	'		'
Forfeited (in shares)	'	'		'	0		'
LTIP Units	'	'		'	'		'
Share and unit-based plans	'	'		'	'		'
Number of executives receiving grants (in employees)	7	'		'	'		'
Look-back period (in years)	'	'		'	'1 year		'
Compensation cost under share and unit-based plans	'	4,743		2,778	12,393		6,646
Conversion rate of shares	'	'		'	1		'
Share and unit-based plans, additional information	'	'		'	'		'
Unrecognized compensation cost of share and unit-based plans	'	4,744		'	4,744		'
Non-vested share and unit based plans, quantity	'	'		'	'		'
Balance at the beginning of the period (in shares)	'	'		'	200,000		'
Granted (in shares)	'	'		'	332,189		'
Vested (in shares)	'	'		'	-200,000		'
Forfeited (in shares)	'	'		'	0		'
Balance at the end of the period (in shares)	'	332,189		'	332,189		'
Non-vested share and unit based plans, weighted average exercise price	'	'		'	'		'
Balance at the beginning of the period (in dollars per share)	'	'		'	$38.63	[1]	'
Granted (in dollars per share)	'	'		'	$49.67	[1]	'
Vested (in dollars per share)	'	'		'	$38.63	[1]	'
Forfeited (in dollars per share)	'	'		'	$0	[1]	'
Balance at the end of the period (in dollars per share)	'	$49.67	[1]	'	$49.67	[1]	'
Stock awards	'	'		'	'		'
Share and unit-based plans	'	'		'	'		'
Compensation cost under share and unit-based plans	'	121		125	353		345
Share and unit-based plans, additional information	'	'		'	'		'
Unrecognized compensation cost of share and unit-based plans	'	779		'	779		'
Non-vested share and unit based plans, quantity	'	'		'	'		'
Balance at the beginning of the period (in shares)	'	'		'	20,924		'
Granted (in shares)	'	'		'	8,963		'
Vested (in shares)	'	'		'	-10,886		'
Forfeited (in shares)	'	'		'	0		'
Balance at the end of the period (in shares)	'	19,001		'	19,001		'
Non-vested share and unit based plans, weighted average exercise price	'	'		'	'		'
Balance at the beginning of the period (in dollars per share)	'	'		'	$49.36	[1]	'
Granted (in dollars per share)	'	'		'	$61.84	[1]	'
Vested (in dollars per share)	'	'		'	$46.70	[1]	'
Forfeited (in dollars per share)	'	'		'	$0	[1]	'
Balance at the end of the period (in dollars per share)	'	$56.77	[1]	'	$56.77	[1]	'
Stock units	'	'		'	'		'
Share and unit-based plans	'	'		'	'		'
Compensation cost under share and unit-based plans	'	674		383	3,165		2,991
Share and unit-based plans, additional information	'	'		'	'		'
Unrecognized compensation cost of share and unit-based plans	'	3,650		'	3,650		'
Non-vested share and unit based plans, quantity	'	'		'	'		'
Balance at the beginning of the period (in shares)	'	'		'	114,677		'
Granted (in shares)	'	'		'	67,920		'
Vested (in shares)	'	'		'	-45,279		'
Forfeited (in shares)	'	'		'	0		'
Balance at the end of the period (in shares)	'	137,318		'	137,318		'
Non-vested share and unit based plans, weighted average exercise price	'	'		'	'		'
Balance at the beginning of the period (in dollars per share)	'	'		'	$52.19	[1]	'
Granted (in dollars per share)	'	'		'	$62.01	[1]	'
Vested (in dollars per share)	'	'		'	$51.29	[1]	'
Forfeited (in dollars per share)	'	'		'	$0	[1]	'
Balance at the end of the period (in dollars per share)	'	$57.24	[1]	'	$57.24	[1]	'
Stock options	'	'		'	'		'
Share and unit-based plans	'	'		'	'		'
Compensation cost under share and unit-based plans	'	4		18	12		18
Share and unit-based plans, additional information	'	'		'	'		'
Unrecognized compensation cost of share and unit-based plans	'	64		'	64		'
Options	'	'		'	'		'
Balance at beginning of period (in shares)	'	'		'	12,768		'
Granted (in shares)	'	'		'	0		'
Exercised (in shares)	'	'		'	-2,700		'
Balance at end of period (in shares)	'	10,068		'	10,068		'
Weighted Average Exercise Price	'	'		'	'		'
Balance at beginning of period (in dollars per share)	'	'		'	$54.69		'
Granted (in dollars per share)	'	'		'	$0		'
Exercised (in dollars per share)	'	'		'	$36.51		'
Balance at end of period (in dollars per share)	'	$59.57		'	$59.57		'
Stock appreciation rights ("SARs")	'	'		'	'		'
Share and unit-based plans	'	'		'	'		'
Compensation cost under share and unit-based plans	'	0		210	0		291
Non-vested share and unit based plans, quantity	'	'		'	'		'
Balance at the beginning of the period (in shares)	'	'		'	1,164,185		'
Granted (in shares)	'	'		'	0		'
Exercised (in shares)	'	'		'	-93,194		'
Forfeited (in shares)	'	'		'	0		'
Balance at the end of the period (in shares)	'	1,070,991		'	1,070,991		'
Non-vested share and unit based plans, weighted average exercise price	'	'		'	'		'
Balance at the beginning of the period (in dollars per share)	'	'		'	$56.66		'
Granted (in dollars per share)	'	'		'	$0		'
Exercised (in dollars per share)	'	'		'	$56.63		'
Forfeited (in dollars per share)	'	'		'	$0	[1]	'
Balance at the end of the period (in dollars per share)	'	$56.66		'	$56.66		'
Phantom stock units	'	'		'	'		'
Share and unit-based plans	'	'		'	'		'
Compensation cost under share and unit-based plans	'	248		211	735		721
Share and unit-based plans, additional information	'	'		'	'		'
Unrecognized compensation cost of share and unit-based plans	'	$1,155		'	$1,155		'
Non-vested share and unit based plans, quantity	'	'		'	'		'
Balance at the beginning of the period (in shares)	'	'		'	0		'
Granted (in shares)	'	'		'	32,063		'
Vested (in shares)	'	'		'	-12,377		'
Forfeited (in shares)	'	'		'	0		'
Balance at the end of the period (in shares)	'	19,686		'	19,686		'
Non-vested share and unit based plans, weighted average exercise price	'	'		'	'		'
Balance at the beginning of the period (in dollars per share)	'	'		'	$0	[1]	'
Granted (in dollars per share)	'	'		'	$58.94	[1]	'
Vested (in dollars per share)	'	'		'	$59.38	[1]	'
Forfeited (in dollars per share)	'	'		'	$0	[1]	'
Balance at the end of the period (in dollars per share)	'	$58.66	[1]	'	$58.66	[1]	'
[1]	Value represents the weighted-average grant date fair value.

Income_Taxes_Details

Income Taxes: (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	Dec. 31, 2012
Income tax benefit	'	'	'	'	'
Current	($79)	$0	($235)	$0	'
Deferred	622	934	2,498	2,159	'
Income tax benefit	543	934	2,263	2,159	'
Components of net deferred tax assets	'	'	'	'	'
Net deferred tax assets	$32,020	'	$32,020	'	$33,414

Subsequent_Events_Details

Subsequent Events: (Details) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Aug. 06, 2013

Aug. 06, 2013

Sep. 30, 2013

Aug. 06, 2013

Sep. 30, 2013

Dec. 08, 2011

Sep. 30, 2013

Dec. 08, 2011

Dec. 08, 2011

Sep. 30, 2013

31-May-12

Oct. 25, 2013

Oct. 23, 2013

Oct. 15, 2013

Oct. 21, 2013

Oct. 08, 2013

Oct. 24, 2013

Line of Credit

Line of Credit

Line of Credit

Line of Credit

Line of Credit

Line of Credit

Unsecured term loan

Unsecured term loan

Unsecured term loan

Unsecured term loan

Mervyn's

Mervyn's

Subsequent event

Subsequent event

Subsequent event

Subsequent event

Subsequent event

Superstition Springs Land I

Low end of range

Low end of range

High end of range

High end of range

Low end of range

High end of range

Dividend declared

Mervyn's

Mervyn's

FlatIron Crossing

Ridgmar Mall

Subsequent event

sqft

sqft

Subsequent events

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,273,000

999,000

Purchase price on acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$44,242

Purchase price funded by cash payment on acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,742

Noncash or Part Noncash Acquisition, Debt Assumed

'

'

109,858

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22,500

Proceeds from sale

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,000

20,750

'

5,430

5,700

'

60,900

'

Mortgage Loans on Real Estate, New Mortgage Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

268,000

'

'

Gain (loss) from sale

-1,281

-256

140,631

75,571

'

'

'

'

'

'

'

'

'

'

-2,617

-407

'

'

'

'

'

'

Additional ownership interest acquired (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

33.30%

Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities

'

'

2,694,945

1,813,271

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,657

'

Distributions to Co-venture Partner

'

'

14,496

34,615

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,243

'

Interest rate on debt (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.85%

'

'

Debt Instrument, Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'7 years

'

'

Interest rate spread over basis (as a percent)

'

'

1.50%

'

'

'

1.38%

1.75%

2.00%

3.00%

'

2.20%

1.95%

3.20%

'

'

'

'

'

'

'

'

Expansion borrowing capacity

'

'

'

'

$2,000,000

$2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate basis (as a percent)

'

'

'

'

'

'

'

'

'

'

'LIBOR

'LIBOR

'

'

'

'

'

'

'

'

'

'

Dividend/distribution for common stockholders and OP Unit holders (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.62

'

'

'

'

'

Percentage of dividend/distribution payable in cash (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'