The Macerich Company (MAC) 10-Q 1 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'MACERICH CO	'
Entity Central Index Key	'0000912242	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
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	'	140,714,194
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS:	'		'
Property, net	$7,556,064		$7,621,766
Cash and cash equivalents	56,500		69,715
Restricted cash	15,423		16,843
Tenant and other receivables, net	97,900		99,497
Deferred charges and other assets, net	506,778		533,058
Loans to unconsolidated joint ventures	3,396		2,756
Due from affiliates	29,192		30,132
Investments in unconsolidated joint ventures	797,010		701,483
Total assets	9,062,263		9,075,250
Mortgage notes payable:	'		'
Related parties	266,658	[1]	269,381	[1]
Others	4,106,731	[1]	4,145,809	[1]
Total	4,373,389		4,415,190
Bank and other notes payable	386,718		167,537
Accounts payable and accrued expenses	66,652		76,941
Other accrued liabilities	306,899		363,158
Distributions in excess of investments in unconsolidated joint ventures	261,073		252,192
Co-venture obligation	76,854		81,515
Total liabilities	5,471,585		5,356,533
Commitments and contingencies	'		'
Stockholders' equity:	'		'
Common stock, $0.01 par value, 250,000,000 shares authorized, 140,907,420 and 140,733,683 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	1,409		1,407
Additional paid-in capital	3,925,713		3,906,148
Accumulated deficit	-689,497		-548,806
Total stockholders' equity	3,237,625		3,358,749
Noncontrolling interests	353,053		359,968
Total equity	3,590,678		3,718,717
Total liabilities and equity	$9,062,263		$9,075,250
[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 into 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 CollateralJune 30, 2014 December 31, 2013Arrowhead Towne Center$13,105 $14,642Camelback Colonnade1,528 2,120Deptford Mall(11) (14)Fashion Outlets of Niagara Falls USA5,878 6,342Superstition Springs Center737 895Valley Mall(175) (219) $21,062 $23,766

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
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)	140,907,420	140,733,683
Common Stock, shares outstanding (in shares)	140,907,420	140,733,683

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended				6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Revenues:	'		'		'		'
Minimum rents	$149,220		$140,214		$300,852		$277,241
Percentage rents	2,372		2,516		5,222		6,498
Tenant recoveries	83,375		81,674		174,850		160,632
Management Companies	8,776		10,301		16,897		20,451
Other	10,594		11,173		21,024		24,361
Total revenues	254,337		245,878		518,845		489,183
Expenses:	'		'		'		'
Shopping center and operating expenses	81,865		78,682		172,225		157,290
Management Companies' operating expenses	20,896		22,816		43,677		45,965
REIT general and administrative expenses	5,123		6,693		12,006		12,717
Depreciation and amortization	87,801		88,579		176,457		175,596
Total expenses before interest	195,685		196,770		404,365		391,568
Interest expense:	'		'		'		'
Related parties	3,690		3,764		7,398		7,544
Other	42,110		46,611		84,740		92,513
Total interest expense	45,800		50,375		92,138		100,057
(Gain) loss on extinguishment of debt, net	0		-1,943		358		-1,943
Total expenses	241,485		245,202		496,861		489,682
Equity in income of unconsolidated joint ventures	13,903		92,201		27,672		110,316
Co-venture expense	-2,212		-2,138		-4,032		-4,179
Income tax benefit	2,898		1,477		3,070		1,721
(Loss) gain on remeasurement, sale or write down of assets, net	-9,455		-798		-11,065		4,030
Income from continuing operations	17,986		91,418		37,629		111,389
Discontinued operations:	'		'		'		'
Gain on the disposition of assets, net	0		141,906		0		141,912
Income from discontinued operations	0		1,492		0		4,044
Total income from discontinued operations	0		143,398		0		145,956
Net income	17,986		234,816		37,629		257,345
Less net income attributable to noncontrolling interests	1,898		15,819		3,722		20,256
Net income attributable to the Company	$16,088		$218,997		$33,907		$237,089
Earnings per common share attributable to Company—basic: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.11		$0.61		$0.24		$0.73
Discontinued operations	$0		$0.96		$0		$0.98
Net income attributable to common stockholders	$0.11		$1.57		$0.24		$1.71
Earnings per common share attributable to Company—diluted: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.11		$0.61		$0.24		$0.73
Discontinued operations	$0		$0.96		$0		$0.98
Net income attributable to common stockholders	$0.11		$1.57		$0.24		$1.71
Weighted average number of common shares outstanding: (in shares)	'		'		'		'
Basic	140,894		139,372		140,831		138,460
Diluted	141,036	[1]	139,526	[1]	140,929	[1]	138,581	[1]
[1]	Diluted EPS excludes 184,304 convertible preferred units for the three and six months ended June 30, 2014 and 2013 as their impact was antidilutive.Diluted EPS excludes 10,113,486 and 9,938,795 Operating Partnership units ("OP Units") for the three months ended June 30, 2014 and 2013, respectively, and 10,052,805 and 10,072,120 OP Units for the six months ended June 30, 2014 and 2013, 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, 2013	$3,718,717	$3,358,749	$1,407	$3,906,148	($548,806)	$359,968
Balance (in shares) at Dec. 31, 2013	140,733,683	'	140,733,683	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'
Net income	37,629	33,907	'	'	33,907	3,722
Amortization of share and unit-based compensation plans (in shares)	'	'	88,447	'	'	'
Amortization of share and unit-based compensation plans	25,200	25,200	1	25,199	'	'
Employee stock purchases (in shares)	'	'	13,957	'	'	'
Employee stock purchases	645	645	'	645	'	'
Distributions paid ($1.24) per share	-174,598	-174,598	'	'	-174,598	'
Distributions to noncontrolling interests	-16,602	'	'	'	'	-16,602
Other	-92	-92	'	-92	'	'
Conversion of noncontrolling interests to common shares (in shares)	'	'	71,333	'	'	'
Conversion of noncontrolling interests to common shares	'	984	1	983	'	-984
Redemption of noncontrolling interests	-221	-147	'	-147	'	-74
Adjustment of noncontrolling interest in Operating Partnership	'	-7,023	'	-7,023	'	7,023
Balance at Jun. 30, 2014	$3,590,678	$3,237,625	$1,409	$3,925,713	($689,497)	$353,053
Balance (in shares) at Jun. 30, 2014	140,907,420	'	140,907,420	'	'	'

CONSOLIDATED_STATEMENT_OF_EQUI1

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2014
Statement of Stockholders' Equity [Abstract]	'
Distributions paid, per share (in dollars per share)	$1.24

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income	$37,629	$257,345
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Loss (gain) on extinguishment of debt	358	-1,943
Loss (gain) on remeasurement, sale or write down of assets, net	11,065	-4,030
Gain on the disposition of assets, net from discontinued operations	0	-141,912
Depreciation and amortization	180,374	191,431
Amortization of net premium on mortgage notes payable	-2,704	-4,464
Amortization of share and unit-based plans	20,839	8,780
Straight-line rent adjustment	-3,098	-3,851
Amortization of above and below-market leases	-2,719	-3,042
Provision for doubtful accounts	3,430	2,583
Income tax benefit	-3,070	-1,721
Equity in income of unconsolidated joint ventures	-27,672	-110,316
Distributions of income from unconsolidated joint ventures	177	8,022
Co-venture expense	4,032	4,179
Changes in assets and liabilities, net of acquisitions and dispositions:	'	'
Tenant and other receivables	10,966	8,624
Other assets	487	10,774
Due from affiliates	940	-349
Accounts payable and accrued expenses	-15,085	-3,653
Other accrued liabilities	-25,377	-33,670
Net cash provided by operating activities	190,572	182,787
Cash flows from investing activities:	'	'
Acquisitions of property	-15,233	-492,577
Development, redevelopment, expansion and renovation of properties	-82,457	-86,982
Property improvements	-14,597	-11,049
Issuance of notes receivable	0	-13,330
Proceeds from maturities of marketable securities	0	689
Deferred leasing costs	-13,772	-16,769
Distributions from unconsolidated joint ventures	33,382	220,102
Contributions to unconsolidated joint ventures	-108,316	-42,616
Collection of/loans to unconsolidated joint ventures, net	-640	596
Proceeds from sale of assets	25,414	315,059
Restricted cash	1,420	6,398
Net cash used in investing activities	-174,799	-120,479
Cash flows from financing activities:	'	'
Proceeds from mortgages, bank and other notes payable	301,655	2,093,503
Payments on mortgages, bank and other notes payable	-121,571	-2,156,635
Deferred financing costs	-603	-5,503
Net proceeds from stock offerings	0	171,174
Proceeds from share and unit-based plans	645	459
Redemption of noncontrolling interests	-221	-1,022
Contingent consideration paid	-9,000	0
Dividends and distributions	-191,200	-173,417
Distributions to co-venture partner	-8,693	-9,717
Net cash used in financing activities	-28,988	-81,158
Net decrease in cash and cash equivalents	-13,215	-18,850
Cash and cash equivalents, beginning of period	69,715	65,793
Cash and cash equivalents, end of period	56,500	46,943
Supplemental cash flow information:	'	'
Cash payments for interest, net of amounts capitalized	97,083	113,201
Non-cash transactions:	'	'
Accrued development costs included in accounts payable and accrued expenses and other accrued liabilities	24,933	23,063
Acquisition of property in exchange for investment in unconsolidated joint venture	15,767	0
Notes receivable issued in connection with sale of property	9,603	0
Application of deposit to acquire property	0	30,000
Conversion of noncontrolling interests to common shares	$984	$12,984

Organization

Organization:	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014, the Company was the sole general partner of, and held a 93% 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:	6 Months Ended
	Jun. 30, 2014
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, 2013. 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, 2013 has been derived from the audited financial statements, but does not include all disclosures required by GAAP.
	Recent Accounting Pronouncements:
	On April 10, 2014, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2014-08, which amends the definition of discontinued operations and requires additional disclosures for disposal transactions that do not meet the revised discontinued operations criteria. ASU 2014-08 is required to be adopted for fiscal years beginning after December 15, 2014, with early adoption permitted. The Company's early adoption of this pronouncement on January 1, 2014 did not have a material impact on the Company's consolidated financial statements.

Earnings_per_Share_EPS

Earnings per Share ("EPS"):	6 Months Ended
	Jun. 30, 2014
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 six months ended June 30, 2014 and 2013 (shares in thousands):
		For the Three Months Ended June 30,						For the Six Months Ended June 30,
		2014			2013			2014			2013
	Numerator
	Income from continuing operations	$	17,986		$	91,418		$	37,629		$	111,389
	Income from discontinued operations	—			143,398			—			145,956
	Net income attributable to noncontrolling interests	(1,898		)	(15,819		)	(3,722		)	(20,256		)
	Net income attributable to the Company	16,088			218,997			33,907			237,089
	Allocation of earnings to participating securities	(120		)	(217		)	(248		)	(216		)
	Numerator for basic and diluted earnings per share—net income attributable to common stockholders	$	15,968		$	218,780		$	33,659		$	236,873
	Denominator
	Denominator for basic earnings per share—weighted average number of common shares outstanding	140,894			139,372			140,831			138,460
	Effect of dilutive securities:(1)
	Share and unit-based compensation plans	142			154			98			121
	Denominator for diluted earnings per share—weighted average number of common shares outstanding	141,036			139,526			140,929			138,581
	Earnings per common share—basic:
	Income from continuing operations	$	0.11		$	0.61		$	0.24		$	0.73
	Discontinued operations	—			0.96			—			0.98
	Net income attributable to common stockholders	$	0.11		$	1.57		$	0.24		$	1.71
	Earnings per common share—diluted:
	Income from continuing operations	$	0.11		$	0.61		$	0.24		$	0.73
	Discontinued operations	—			0.96			—			0.98
	Net income attributable to common stockholders	$	0.11		$	1.57		$	0.24		$	1.71
	-1	Diluted EPS excludes 184,304 convertible preferred units for the three and six months ended June 30, 2014 and 2013 as their impact was antidilutive.
	Diluted EPS excludes 10,113,486 and 9,938,795 Operating Partnership units ("OP Units") for the three months ended June 30, 2014 and 2013, respectively, and 10,052,805 and 10,072,120 OP Units for the six months ended June 30, 2014 and 2013, respectively, as their impact was antidilutive.

Investments_in_Unconsolidated_

Investments in Unconsolidated Joint Ventures:	6 Months Ended
	Jun. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Investments in Unconsolidated Joint Ventures:	'
	Investments in Unconsolidated Joint Ventures:
	The Company has made the following recent investments and dispositions relating to its unconsolidated joint ventures:
	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 $89,157 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. The Company used its share of the proceeds from the sale 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, an 846,000 square foot regional shopping center in Silverdale, Washington, for $127,000, resulting in a gain on the sale of assets of $55,150 to the joint venture. The Company's share of the gain was $28,127, which was included in equity in income of unconsolidated joint ventures. The Company used its share of the proceeds from the sale 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 $38,447 to the joint venture. The Company's share of the gain was $18,251, which was included in equity in income of unconsolidated joint ventures. The Company used its share of the proceeds from the sale 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 13—Acquisitions).
	On October 8, 2013, the Company's joint venture in Ridgmar Mall, a 1,273,000 square foot regional shopping center in Fort Worth, Texas, sold the property for $60,900, resulting in a gain on the sale of assets of $6,243 to the joint venture. The Company's share of the gain was $3,121, which was included in equity in income from joint ventures. 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 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 1,082,000 square foot regional shopping center in Mesa, Arizona, that it did not own for $46,162. The purchase price was funded by a cash payment of $23,662 and the assumption of the third party's pro rata share of the mortgage note payable on the property of $22,500. Prior to the acquisition, the Company had accounted for its investment in Superstition Springs Center under the equity method. Since the date of acquisition, the Company has included Superstition Springs Center in its consolidated financial statements (See Note 13—Acquisitions).
	On June 4, 2014, the Company acquired the remaining 49.0% ownership interest in Cascade Mall, a 593,000 square foot regional shopping center in Burlington, Washington, that it did not own for a cash payment of $15,233. The Company purchased Cascade Mall from its joint venture in Pacific Premier Retail LP. Prior to the acquisition, the Company had accounted for its investment in Cascade Mall under the equity method. Since the date of acquisition, the Company has included Cascade Mall in its consolidated financial statements (See Note 13—Acquisitions).
	Combined and condensed balance sheets and statements of operations are presented below for all unconsolidated joint ventures.
	Combined and Condensed Balance Sheets of Unconsolidated Joint Ventures:
		June 30,			December 31,
		2014			2013
	Assets(1):
	Properties, net	$	3,546,003		$	3,435,737
	Other assets	351,692			295,719
	Total assets	$	3,897,695		$	3,731,456
	Liabilities and partners' capital(1):
	Mortgage notes payable(2)	$	3,495,673		$	3,518,215
	Other liabilities	213,190			202,444
	Company's capital (deficit)	62,527			(25,367		)
	Outside partners' capital	126,305			36,164
	Total liabilities and partners' capital	$	3,897,695		$	3,731,456
	Investments in unconsolidated joint ventures:
	Company's capital (deficit)	$	62,527		$	(25,367	)
	Basis adjustment(3)	473,410			474,658
		$	535,937		$	449,291
	Assets—Investments in unconsolidated joint ventures	$	797,010		$	701,483
	Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(261,073		)	(252,192		)
		$	535,937		$	449,291
	-1	These amounts include the assets and liabilities of the following joint ventures as of June 30, 2014 and December 31, 2013:
		Pacific			Tysons
		Premier			Corner LLC
		Retail LP
	As of June 30, 2014:
	Total Assets	$	728,501		$	382,035
	Total Liabilities	$	804,884		$	878,571
	As of December 31, 2013:
	Total Assets	$	775,012		$	356,871
	Total Liabilities	$	812,725		$	887,413
	-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 June 30, 2014 and December 31, 2013, a total of $33,540 could become recourse debt to the Company. As of June 30, 2014 and December 31, 2013, the Company had an indemnity agreement from a joint venture partner for $16,770 of the guaranteed amount.
	Included in mortgage notes payable are amounts due to affiliates of Northwestern Mutual Life ("NML") of $706,584 and $712,455 as of June 30, 2014 and December 31, 2013, 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 on these borrowings was $9,623 and $6,854 for the three months ended June 30, 2014 and 2013, respectively, and $19,347 and $13,797 for the six months ended June 30, 2014 and 2013, 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 $855 and $2,334 for the three months ended June 30, 2014 and 2013, respectively, and $2,279 and $3,259 for the six months ended June 30, 2014 and 2013, respectively.
	Combined and Condensed Statements of Operations of Unconsolidated Joint Ventures:
		Pacific			Tysons			Other			Total
		Premier			Corner			Joint
		Retail LP			LLC			Ventures
	Three Months Ended June 30, 2014
	Revenues:
	Minimum rents	$	25,654		$	15,696		$	56,289		$	97,639
	Percentage rents	550			180			3,264			3,994
	Tenant recoveries	11,379			11,489			24,260			47,128
	Other	1,613			929			8,443			10,985
	Total revenues	39,196			28,294			92,256			159,746
	Expenses:
	Shopping center and operating expenses	10,682			9,521			30,258			50,461
	Interest expense	9,831			7,653			19,495			36,979
	Depreciation and amortization	8,750			4,756			21,239			34,745
	Total operating expenses	29,263			21,930			70,992			122,185
	Loss on remeasurement, sale or write down of assets, net	(6,226		)	—			(42		)	(6,268		)
	Net income	$	3,707		$	6,364		$	21,222		$	31,293
	Company's equity in net income	$	1,218		$	1,611		$	11,074		$	13,903
	Three Months Ended June 30, 2013
Revenues:
Minimum rents	$	31,221		$	15,685		$	59,969		$	106,875
Percentage rents	594			180			2,936			3,710
Tenant recoveries	14,486			11,697			26,688			52,871
Other	1,643			652			11,367			13,662
Total revenues	47,944			28,214			100,960			177,118
Expenses:
Shopping center and operating expenses	14,269			8,519			34,790			57,578
Interest expense	11,293			1,784			20,929			34,006
Depreciation and amortization	10,720			4,501			23,299			38,520
Total operating expenses	36,282			14,804			79,018			130,104
Gain on remeasurement, sale or write down of assets, net	144,349			—			891			145,240
Net income	$	156,011		$	13,410		$	22,833		$	192,254
Company's equity in net income	$	78,426		$	5,161		$	8,614		$	92,201
	Pacific			Tysons			Other			Total
	Premier			Corner			Joint
	Retail LP			LLC			Ventures
Six Months Ended June 30, 2014
Revenues:
Minimum rents	$	51,734		$	31,974		$	112,188		$	195,896
Percentage rents	1,209			604			4,232			6,045
Tenant recoveries	23,119			23,383			49,371			95,873
Other	2,690			1,616			16,298			20,604
Total revenues	78,752			57,577			182,089			318,418
Expenses:
Shopping center and operating expenses	21,813			19,680			64,138			105,631
Interest expense	19,929			15,483			39,066			74,478
Depreciation and amortization	17,548			9,358			42,762			69,668
Total operating expenses	59,290			44,521			145,966			249,777
Loss on remeasurement, sale or write down of assets, net	(6,312		)	—			(60		)	(6,372		)
Net income	$	13,150		$	13,056		$	36,063		$	62,269
Company's equity in net income	$	5,486		$	3,369		$	18,817		$	27,672
Six Months Ended June 30, 2013
Revenues:
Minimum rents	$	64,353		$	31,182		$	120,930		$	216,465
Percentage rents	1,583			746			4,238			6,567
Tenant recoveries	28,440			22,721			53,900			105,061
Other	2,894			1,570			18,780			23,244
Total revenues	97,270			56,219			197,848			351,337
Expenses:
Shopping center and operating expenses	28,717			17,001			70,961			116,679
Interest expense	22,867			4,024			45,046			71,937
Depreciation and amortization	21,630			8,931			45,120			75,681
Total operating expenses	73,214			29,956			161,127			264,297
Gain on remeasurement, sale or write down of assets, net	144,349			—			701			145,050
Net income	$	168,405		$	26,263		$	37,422		$	232,090
Company's equity in net income	$	84,117		$	10,038		$	16,161		$	110,316
Significant accounting policies used by the unconsolidated joint ventures are similar to those used by the Company.

Property

Property:	6 Months Ended
	Jun. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property:	'
	Property:
	Property consists of the following:
		June 30,			December 31,
		2014			2013
	Land	$	1,716,154		$	1,707,005
	Buildings and improvements	6,508,046			6,555,212
	Tenant improvements	539,313			537,754
	Equipment and furnishings	155,094			152,198
	Construction in progress	285,816			229,169
		9,204,423			9,181,338
	Less accumulated depreciation	(1,648,359		)	(1,559,572		)
		$	7,556,064		$	7,621,766
	Depreciation expense was $68,017 and $65,737 for the three months ended June 30, 2014 and 2013, respectively, and $136,495 and $131,633 for the six months ended June 30, 2014 and 2013, respectively.
	The (loss) gain on remeasurement, sale or write down of assets, net, for the three and six months ended June 30, 2014 includes an impairment loss of $8,516 due to the reduction of the estimated holding periods of three freestanding stores.
	The (loss) gain on remeasurement, sale or write down of assets, net, for the six months ended June 30, 2014 includes the loss of $1,685 on the sales of Rotterdam Square, a 585,000 square foot regional shopping center in Schenectady, New York; Somersville Towne Center, a 348,000 square foot regional shopping center in Antioch, California; and Lake Square Mall, a 559,000 square foot regional shopping center in Leesburg, Florida. The (loss) gain on remeasurement, sale or write down of assets, net, includes the gains on the sale of land of $238 for the three and six months ended June 30, 2014 and $5,401 for the six months ended June 30, 2013.
	In addition, the (loss) gain on remeasurement, sale or write down of assets, net, includes the write-off of development costs of $1,177 and $798 for the three months ended June 30, 2014 and 2013, respectively, and $1,102 and $1,371 for the six months ended June 30, 2014 and 2013, respectively.

Tenant_and_Other_Receivables_n

Tenant and Other Receivables, net:	6 Months Ended
	Jun. 30, 2014
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 $5,178 and $2,878 at June 30, 2014 and December 31, 2013, respectively. Also included in tenant and other receivables, net, are accrued percentage rents of $1,758 and $9,824 at June 30, 2014 and December 31, 2013, respectively, and a deferred rent receivable due to straight-line rent adjustments of $55,902 and $53,380 at June 30, 2014 and December 31, 2013, respectively.
	On March 17, 2014, in connection with the sale of Lake Square Mall (See Note 5—Property), the Company issued a note receivable for $6,500 that bears interest at an effective rate of 6.5% and matures on March 17, 2018 and a note receivable for $3,103 that bears interest at 5.0% and matures on December 31, 2014. The balance of each of these notes receivable at June 30, 2014 was $6,484 and $2,879, respectively. The notes are collateralized by a trust deed on Lake Square Mall.

Deferred_Charges_and_Other_Ass

Deferred Charges and Other Assets, net:	6 Months Ended
	Jun. 30, 2014
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:
		June 30,			December 31,
		2014			2013
	Leasing	$	221,671		$	223,038
	Financing	50,372			51,695
	Intangible assets:
	In-place lease values	190,390			205,651
	Leasing commissions and legal costs	47,754			50,594
	Above-market leases	114,493			118,770
	Deferred tax assets	34,426			31,356
	Deferred compensation plan assets	34,265			30,932
	Other assets	61,916			65,793
		755,287			777,829
	Less accumulated amortization(1)	(248,509		)	(244,771		)
		$	506,778		$	533,058
	-1	Accumulated amortization includes $88,752 and $89,141 relating to in-place lease values, leasing commissions and legal costs at June 30, 2014 and December 31, 2013, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $11,360 and $14,424 for the three months ended June 30, 2014 and 2013, respectively, and $24,098 and $28,090 for the six months ended June 30, 2014 and 2013, respectively.
	The allocated values of above-market leases and below-market leases consist of the following:
		June 30,			December 31,
		2014			2013
	Above-Market Leases
	Original allocated value	$	114,493		$	118,770
	Less accumulated amortization	(51,628		)	(46,912		)
		$	62,865		$	71,858
	Below-Market Leases(1)
	Original allocated value	$	186,398		$	187,537
	Less accumulated amortization	(85,325		)	(79,271		)
		$	101,073		$	108,266
	-1	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable

Mortgage Notes Payable:	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Mortgage Notes Payable:	'
	Mortgage Notes Payable:
	Mortgage notes payable at June 30, 2014 and December 31, 2013 consist of the following:
			Carrying Amount of Mortgage Notes(1)
			June 30, 2014					December 31, 2013
	Property Pledged as Collateral		Related Party			Other		Related Party		Other		Effective Interest		Monthly		Maturity
												Rate(2)		Debt		Date(4)
														Service(3)
	Arrowhead Towne Center		$	—		$	232,388	$	—	$	236,028	2.76	%	$	1,131	2018
	Camelback Colonnade		—			48,529		—		49,120		2.16	%	178		2015
	Chandler Fashion Center(5)		—			200,000		—		200,000		3.77	%	625		2019
	Danbury Fair Mall		115,712			115,712		117,120		117,120		5.53	%	1,538		2020
	Deptford Mall		—			199,726		—		201,622		3.76	%	947		2023
	Deptford Mall		—			14,419		—		14,551		6.46	%	101		2016
	Eastland Mall		—			168,000		—		168,000		5.79	%	811		2016
	Fashion Outlets of Chicago(6)		—			113,040		—		91,383		2.95	%	233		2017
	Fashion Outlets of Niagara Falls USA		—			122,706		—		124,030		4.89	%	727		2020
	Flagstaff Mall		—			37,000		—		37,000		5.03	%	151		2015
	FlatIron Crossing		—			264,778		—		268,000		3.9	%	1,393		2021
	Freehold Raceway Mall(5)		—			231,255		—		232,900		4.2	%	805		2018
	Fresno Fashion Fair		78,754			78,753		79,391		79,390		6.76	%	1,104		2015
	Great Northern Mall(7)		—			34,993		—		35,484		6.54	%	234		2015
	Green Acres Mall		—			316,694		—		319,850		3.61	%	1,447		2021
	Kings Plaza Shopping Center		—			485,674		—		490,548		3.67	%	2,229		2019
	Northgate Mall(8)		—			64,000		—		64,000		3.03	%	128		2017
	Oaks, The		—			212,239		—		214,239		4.14	%	1,064		2022
	Pacific View		—			134,531		—		135,835		4.08	%	668		2022
	Santa Monica Place		—			232,904		—		235,445		2.99	%	1,004		2018
	SanTan Village Regional Center		—			135,222		—		136,629		3.14	%	589		2019
	South Plains Mall(9)		—			72,089		—		99,833		4.78	%	383		2015
	Superstition Springs Center		—			68,237		—		68,395		1.98	%	138		2016
	Towne Mall		—			22,802		—		22,996		4.48	%	117		2022
	Tucson La Encantada		72,192			—		72,870		—		4.23	%	368		2022
	Valley Mall		—			41,765		—		42,155		5.85	%	280		2016
	Valley River Center		—			120,000		—		120,000		5.59	%	558		2016
	Victor Valley, Mall of(10)		—			90,000		—		90,000		2.71	%	180		2014
	Vintage Faire Mall		—			98,370		—		99,083		5.81	%	586		2015
	Westside Pavilion		—			150,905		—		152,173		4.49	%	783		2022
			$	266,658		$	4,106,731	$	269,381	$	4,145,809
	-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 into 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	June 30,			December 31,
		2014			2013
	Arrowhead Towne Center	$	13,105		$	14,642
	Camelback Colonnade	1,528			2,120
	Deptford Mall	(11		)	(14		)
	Fashion Outlets of Niagara Falls USA	5,878			6,342
	Superstition Springs Center	737			895
	Valley Mall	(175		)	(219		)
		$	21,062		$	23,766
	-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	A 49.9% interest in the loan has been assumed by a third party in connection with a co-venture arrangement (See Note 10—Co-Venture Arrangement).
	-6	The construction loan on the property allows for borrowings of up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At June 30, 2014 and December 31, 2013, the total interest rate was 2.95% and 2.96%, respectively.
	-7	On March 24, 2014, the loan was extended to January 1, 2015.
	-8	The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At June 30, 2014 and December 31, 2013, the total interest rate was 3.03% and 3.04%, respectively.
	-9	On February 7, 2014, the Company paid off in full one of the two loans on the property, which resulted in a loss of $358 on the early extinguishment of debt.
	-10	The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At June 30, 2014 and December 31, 2013, the total interest rate was 2.71% and 2.73%, respectively.
	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 June 30, 2014 and December 31, 2013, a total of $88,019 and $77,192, respectively, of the mortgage notes payable could become recourse to the Company.
	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 $3,098 and $2,874 for the three months ended June 30, 2014 and 2013, respectively, and $5,583 and $5,342 during the six months ended June 30, 2014 and 2013, respectively.
	Related party mortgage notes payable are amounts due to affiliates of NML. See Note 16—Related Party Transactions for interest expense associated with loans from NML.
The estimated fair value (Level 2 measurement) of mortgage notes payable at June 30, 2014 and December 31, 2013 was $4,450,277 and $4,500,177, respectively, based on current interest rates for comparable loans. 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 property that serves as collateral for the underlying debt.

Bank_and_Other_Notes_Payable

Bank and Other Notes Payable:	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Bank and Other Notes Payable:	'
	Bank and Other Notes Payable:
	Bank and other notes payable consist of the following:
	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 1.38% 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 June 30, 2014, the borrowing rate on the facility was LIBOR plus 1.38%. 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 June 30, 2014 and December 31, 2013, borrowings under the line of credit were $250,000 and $30,000, respectively, at an average interest rate of 2.17% and 1.85%, respectively. The estimated fair value (Level 2 measurement) of the line of credit at June 30, 2014 and December 31, 2013 was $239,362 and $28,214, 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 level, and matures on December 8, 2018. Based on the Company's current leverage level as of June 30, 2014, the borrowing rate was LIBOR plus 1.95%. As of June 30, 2014 and December 31, 2013, the total interest rate was 2.25% and 2.51%, respectively. The estimated fair value (Level 2 measurement) of the term loan at June 30, 2014 and December 31, 2013 was $119,688 and $120,802, respectively, based on a present value model using a credit interest rate spread offered to the Company for comparable debt.
	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 June 30, 2014 and December 31, 2013, the note had a balance of $11,718 and $12,537, respectively. The estimated fair value (Level 2 measurement) of the note at June 30, 2014 and December 31, 2013 was $12,189 and $13,114, respectively, 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 June 30, 2014 and December 31, 2013, the Company was in compliance with all applicable financial loan covenants.

CoVenture_Arrangement

Co-Venture Arrangement:	6 Months Ended
	Jun. 30, 2014
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 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. 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 $76,854 and $81,515 at June 30, 2014 and December 31, 2013, respectively.

Noncontrolling_Interests

Noncontrolling Interests:	6 Months Ended
	Jun. 30, 2014
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 93% ownership interest in the Operating Partnership as of June 30, 2014 and December 31, 2013. The remaining 7% limited partnership interest as of June 30, 2014 and December 31, 2013 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 June 30, 2014 and December 31, 2013, the aggregate redemption value of the then-outstanding OP Units not owned by the Company was $672,472 and $587,917, 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:	6 Months Ended
	Jun. 30, 2014
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity:	'
	Stockholders' Equity:
	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 year ended December 31, 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 year ended December 31, 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 $171,102 after commissions and other transaction costs. The proceeds from the sales were used to pay down the Company's line of credit. The Company did not sell any shares under the ATM Program during the three or six months ended June 30, 2014.
	As of June 30, 2014, $149,093 of the Shares 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.

Acquisitions

Acquisitions:	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Acquisitions:	'
		Acquisitions:
	Green Acres Mall:
	On January 24, 2013, the Company acquired Green Acres Mall, a 1,793,000 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.
	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 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.
	Superstition Springs Center:
	On October 24, 2013, the Company acquired the remaining 33.3% ownership interest in Superstition Springs Center that it did not own for $46,162. The purchase price was funded by a cash payment of $23,662 and the assumption of the third party's pro rata share of the mortgage note payable on the property of $22,500. Prior to the acquisition, the Company had accounted for its investment under the equity method (See Note 4—Investments in Unconsolidated Joint Ventures). As a result of this transaction, the Company obtained 100% ownership of Superstition Springs Center. The acquisition was completed in order to gain 100% ownership and control over this asset.
	The following is a summary of the allocation of the fair value of Superstition Springs Center:
	Property	$	114,373
	Deferred charges	12,353
	Cash and cash equivalents	8,894
	Tenant receivables	51
	Other assets	11,535
	Total assets acquired	147,206
	Mortgage note payable	68,448
	Accounts payable	119
	Other accrued liabilities	7,637
	Total liabilities assumed	76,204
	Fair value of acquired net assets (at 100% ownership)	$	71,002
	The Company determined that the purchase price represented the fair value of the additional ownership interest in Superstition Springs Center that was acquired.
	Fair value of existing ownership interest (at 66.7% ownership)	$	47,340
	Carrying value of investment	(32,476		)
	Gain on remeasurement	$	14,864
	The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
	Purchase price	$	46,162
	Less debt assumed	(22,500		)
	Carrying value of investment	32,476
	Remeasurement gain	14,864
	Fair value of acquired net assets (at 100% ownership)	$	71,002
	Since the date of acquisition, the Company has included Superstition Springs Center in its consolidated financial statements.
	Cascade Mall:
	On June 4, 2014, the Company acquired the remaining 49.0% ownership interest in Cascade Mall that it did not own for $15,233. Prior to the acquisition, the Company had accounted for its investment under the equity method (See Note 4—Investments in Unconsolidated Joint Ventures). As a result of this transaction, the Company obtained 100% ownership of Cascade Mall. The acquisition was completed in order to obtain 100% ownership and control over this asset.
	The following is a summary of the allocation of the fair value of Cascade Mall:
Property	$	28,924
Deferred charges	6,660
Other assets	202
Total assets acquired	35,786
Other accrued liabilities	4,786
Total liabilities assumed	4,786
Fair value of acquired net assets (at 100% ownership)	$	31,000
The Company determined that the purchase price represented the fair value of the additional ownership interest in Cascade Mall that was acquired.
The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
Purchase price	$	15,233
Carrying value of investment	15,767
Fair value of acquired net assets (at 100% ownership)	$	31,000
Since the date of acquisition, the Company has included Cascade Mall in its consolidated financial statements. The property has generated incremental revenue of $617 and incremental earnings of $202.
Pro Forma Results of Operations:
The following unaudited pro forma financial information for the three and six months ended June 30, 2014 and 2013 assumes all of the above transactions took place on January 1, 2013:
	For the Three Months Ended June 30,					For the Six Months Ended June 30,
	2014			2013		2014		2013
Pro forma revenue (1)	$	255,987		$	254,720	$	522,110	$	508,655
Pro forma income from continuing operations (1)	$	18,199		$	92,610	$	37,917	$	113,785
-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, 2013, 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:	6 Months Ended
	Jun. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations:	'
	Discontinued Operations:
	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 $59,767. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On June 4, 2013, the Company sold Northridge Mall, an 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 $82,151. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	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 $2,633. 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 $1,252, which is included in (gain) loss on the disposition of assets, net.
	On October 15, 2013, the Company sold a former Mervyn's store in Midland, Texas for $5,700, resulting in a loss on the sale of assets of $2,031. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On October 23, 2013, the Company sold a former Mervyn's store in Grand Junction, Colorado for $5,430, resulting in a gain on the sale of assets of $1,695. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On December 4, 2013, the Company sold a former Mervyn's store in Livermore, California for $10,475, resulting in a loss on the sale of assets of $5,257. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.
	On December 11, 2013, the Company sold Chesterfield Towne Center, a 1,016,000 square foot regional shopping center in Richmond, Virginia, and Centre at Salisbury, an 862,000 square foot regional shopping center in Salisbury, Maryland, in a combined transaction for $292,500, resulting in a gain on the sale of assets of $151,467. The sales price was funded by a cash payment of $67,763, the assumption of the $109,737 mortgage note payable on Chesterfield Towne Center and the assumption of the $115,000 mortgage note payable on Centre at Salisbury. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.
	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 six months ended June 30, 2013.
	Revenues from discontinued operations were $17,022 and $36,501 for the three and six months ended June 30, 2013, respectively. Total income from discontinued operations was $143,398 and $145,956 for the three and six months ended June 30, 2013, respectively.

Commitments_and_Contingencies

Commitments and Contingencies:	6 Months Ended
	Jun. 30, 2014
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 $2,708 and $2,666 for the three months ended June 30, 2014 and 2013, respectively, and $5,377 and $5,301 for the six months ended June 30, 2014 and 2013, respectively. No contingent rent was incurred during the three and six months ended June 30, 2014 or 2013.
	As of June 30, 2014 and December 31, 2013, the Company was contingently liable for $18,388 and $18,862, 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 June 30, 2014, the Company had $36,720 in outstanding obligations which it believes will be settled in the next twelve months.

RelatedParty_Transactions

Related-Party Transactions:	6 Months Ended
	Jun. 30, 2014
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 June 30,				For the Six Months Ended June 30,
		2014		2013		2014		2013
	Management Fees	$	4,890	$	5,506	$	9,714	$	11,000
	Development and Leasing Fees	2,882		2,779		5,378		4,475
		$	7,772	$	8,285	$	15,092	$	15,475
	Certain mortgage notes on the properties are held by NML (See Note 8—Mortgage Notes Payable). Interest expense in connection with these notes was $3,690 and $3,764 for the three months ended June 30, 2014 and 2013, respectively, and $7,398 and $7,544 for the six months ended June 30, 2014 and 2013, respectively. Included in accounts payable and accrued expenses is interest payable on these notes of $1,228 and $1,240 at June 30, 2014 and December 31, 2013, respectively.
	As of June 30, 2014 and December 31, 2013, the Company had loans to unconsolidated joint ventures of $3,396 and $2,756, respectively. Interest income associated with these notes was $78 and $59 for the three months ended June 30, 2014 and 2013, respectively, and $109 and $120 for the six months ended June 30, 2014 and 2013, 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 $3,405 and $3,822 of unreimbursed costs and fees due from unconsolidated joint ventures under management agreements at June 30, 2014 and December 31, 2013, respectively.
	Due from affiliates at June 30, 2014 and December 31, 2013 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 combined balance on these notes was $13,913 and $13,603 at June 30, 2014 and December 31, 2013, respectively. The combined interest income earned on these notes was $156 for the three months ended June 30, 2014 and 2013, and $310 for the six months ended June 30, 2014 and 2013.
	In addition, due from affiliates at June 30, 2014 and December 31, 2013 includes a note receivable of $11,874 and $12,707, respectively, from RED/303 LLC ("RED") that bears interest at 5.25% and matures on March 29, 2016. Interest income earned on this note was $154 and $175 for the three months ended June 30, 2014 and 2013, respectively, and $314 and $181 for the six months ended June 30, 2014 and 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:	6 Months Ended
	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Share and Unit-Based Plans:	'
	Share and Unit-Based Plans:
	Under the Long-Term Incentive Plan ("LTIP"), each award recipient is issued a form of operating partnership units ("LTIP Units") in the Operating Partnership. 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, or cash at the Company's option, on a one-unit for one-share basis. LTIP Units receive cash distributions based on the dividend amount paid on the common stock of the Company to the extent distributions are required. The LTIP may include market-indexed awards, service-based awards and fully-vested awards.
	On January 1, 2014, the Company granted 272,930 market-indexed LTIP Units to seven executive officers at a weighted average grant date fair value of $45.34 per LTIP Unit. The new grants vest over a service period ending December 31, 2014. The market-indexed LTIP Units vest over the service period of the award based on the percentile ranking of the Company in terms of total return to stockholders (the "Total Return") per common stock share relative to the Total Return of a group of peer REITs, as measured at the end of the measurement period. The market-indexed LTIP Units are equally divided between two types of awards. The terms of both types of awards are the same, except one award has an additional 3% absolute Total Return requirement, which if it is not met, then the LTIP Units will not vest.
	The fair value of the market-indexed LTIP Units 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.
	On January 1, 2014, the Company also granted 70,042 service-based LTIP Units to the seven executive officers at a weighted average grant date fair value of $58.89 per LTIP Unit. The service-based LTIP Units will vest in equal annual installments over a service period ending December 31, 2016.
	On March 7, 2014, the Company granted 246,471 fully-vested LTIP Units to the seven executive officers at a weighted average grant date price of $60.25, as their 2013 performance bonus.
	The following summarizes the compensation cost under the share and unit-based plans:
		For the Three Months Ended June 30,						For the Six Months Ended June 30,
		2014			2013			2014				2013
	LTIP Units	$	3,428		$	4,692		$	21,668			$	7,650
	Stock awards	83			122			197				232
	Stock units	1,039			667			2,721				2,491
	Stock options	4			4			8				8
	Phantom stock units	300			246			606				487
		$	4,854		$	5,731		$	25,200			$	10,868
	The Company capitalized share and unit-based compensation costs of $519 and $650 for the three months ended June 30, 2014 and 2013, respectively, and $4,361 and $2,088 for the six months ended June 30, 2014 and 2013, respectively. Unrecognized compensation costs of share and unit-based plans at June 30, 2014 consisted of $9,682 from LTIP Units, $416 from stock awards, $4,173 from stock units, $51 from stock options and $896 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, 2014	—		$	—		19,001			$	56.77			17,575		$	58.66	137,318		$	57.24
	Granted	589,443		53.18			—			—				7,451		61.78		70,389		60.23
	Vested	(246,471	)	60.25			(9,812	)		54.45				(9,771	)	60.91		(68,035	)	55.08
	Forfeited	—		—			—			—				—		—		—		—
	Balance at June 30, 2014	342,972		$	48.11		9,189			$	59.25			15,255		$	58.74	139,672		$	59.8
	-1	Value represents the weighted average grant date fair value.
	The following table summarizes the activity of the stock appreciations rights ("SARs") and stock options outstanding:
		SARs					Stock Options
		Shares		Value(1)			Shares			Value(1)
	Balance at January 1, 2014	1,070,991		$	56.66		10,068			$	59.57
	Granted	—		—			—			—
	Exercised	(5,000	)	56.63			—			—
	Forfeited	—		—			—			—
	Balance at June 30, 2014	1,065,991		$	56.66		10,068			$	59.57
	-1	Value represents the weighted average exercise price.

Income_Taxes

Income Taxes:	6 Months Ended
	Jun. 30, 2014
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 (provision) of the TRSs are as follows:
		For the Three Months Ended June 30,				For the Six Months Ended June 30,
		2014		2013		2014		2013
	Current	$	—	$	125	$	—	$	(156	)
	Deferred	2,898		1,352		3,070		1,877
	Income tax benefit	$	2,898	$	1,477	$	3,070	$	1,721
	The net operating loss carryforwards are currently scheduled to expire through 2033, beginning in 2021. Net deferred tax assets of $34,426 and $31,356 were included in deferred charges and other assets, net, at June 30, 2014 and December 31, 2013, respectively.
	The tax years 2009 through 2013 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 benefit will materially change within the next twelve months.

Subsequent_Events

Subsequent Events:	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events:	'
	Subsequent Events:
	On July 24, 2014, the Company announced a dividend/distribution of $0.62 per share for common stockholders and OP Unit holders of record on August 20, 2014. All dividends/distributions will be paid 100% in cash on September 5, 2014.
	On July 30, 2014, the Company formed a joint venture with Pennsylvania Real Estate Investment Trust to redevelop The Gallery, a 1,400,000 square foot regional shopping center in Philadelphia, Pennsylvania. The Company invested $106,800 for a 50% interest in the joint venture, which was funded by borrowings under its line of credit.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies: (Policies)	6 Months Ended
	Jun. 30, 2014
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, 2013. 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, 2013 has been derived from the audited financial statements, but does not include all disclosures required by GAAP.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements:
	On April 10, 2014, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2014-08, which amends the definition of discontinued operations and requires additional disclosures for disposal transactions that do not meet the revised discontinued operations criteria. ASU 2014-08 is required to be adopted for fiscal years beginning after December 15, 2014, with early adoption permitted. The Company's early adoption of this pronouncement on January 1, 2014 did not have a material impact on the Company's consolidated financial statements.

Earnings_per_Share_EPS_Tables

Earnings per Share ("EPS"): (Tables)	6 Months Ended
	Jun. 30, 2014
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 six months ended June 30, 2014 and 2013 (shares in thousands):
		For the Three Months Ended June 30,						For the Six Months Ended June 30,
		2014			2013			2014			2013
	Numerator
	Income from continuing operations	$	17,986		$	91,418		$	37,629		$	111,389
	Income from discontinued operations	—			143,398			—			145,956
	Net income attributable to noncontrolling interests	(1,898		)	(15,819		)	(3,722		)	(20,256		)
	Net income attributable to the Company	16,088			218,997			33,907			237,089
	Allocation of earnings to participating securities	(120		)	(217		)	(248		)	(216		)
	Numerator for basic and diluted earnings per share—net income attributable to common stockholders	$	15,968		$	218,780		$	33,659		$	236,873
	Denominator
	Denominator for basic earnings per share—weighted average number of common shares outstanding	140,894			139,372			140,831			138,460
	Effect of dilutive securities:(1)
	Share and unit-based compensation plans	142			154			98			121
	Denominator for diluted earnings per share—weighted average number of common shares outstanding	141,036			139,526			140,929			138,581
	Earnings per common share—basic:
	Income from continuing operations	$	0.11		$	0.61		$	0.24		$	0.73
	Discontinued operations	—			0.96			—			0.98
	Net income attributable to common stockholders	$	0.11		$	1.57		$	0.24		$	1.71
	Earnings per common share—diluted:
	Income from continuing operations	$	0.11		$	0.61		$	0.24		$	0.73
	Discontinued operations	—			0.96			—			0.98
	Net income attributable to common stockholders	$	0.11		$	1.57		$	0.24		$	1.71
	-1	Diluted EPS excludes 184,304 convertible preferred units for the three and six months ended June 30, 2014 and 2013 as their impact was antidilutive.
	Diluted EPS excludes 10,113,486 and 9,938,795 Operating Partnership units ("OP Units") for the three months ended June 30, 2014 and 2013, respectively, and 10,052,805 and 10,072,120 OP Units for the six months ended June 30, 2014 and 2013, respectively, as their impact was antidilutive.

Investments_in_Unconsolidated_1

Investments in Unconsolidated Joint Ventures: (Tables)	6 Months Ended
	Jun. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Combined and Condensed Balance Sheets of Unconsolidated Joint Ventures and Other Related Information	'
	Combined and Condensed Balance Sheets of Unconsolidated Joint Ventures:
		June 30,			December 31,
		2014			2013
	Assets(1):
	Properties, net	$	3,546,003		$	3,435,737
	Other assets	351,692			295,719
	Total assets	$	3,897,695		$	3,731,456
	Liabilities and partners' capital(1):
	Mortgage notes payable(2)	$	3,495,673		$	3,518,215
	Other liabilities	213,190			202,444
	Company's capital (deficit)	62,527			(25,367		)
	Outside partners' capital	126,305			36,164
	Total liabilities and partners' capital	$	3,897,695		$	3,731,456
	Investments in unconsolidated joint ventures:
	Company's capital (deficit)	$	62,527		$	(25,367	)
	Basis adjustment(3)	473,410			474,658
		$	535,937		$	449,291
	Assets—Investments in unconsolidated joint ventures	$	797,010		$	701,483
	Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(261,073		)	(252,192		)
		$	535,937		$	449,291
	-1	These amounts include the assets and liabilities of the following joint ventures as of June 30, 2014 and December 31, 2013:
		Pacific			Tysons
		Premier			Corner LLC
		Retail LP
	As of June 30, 2014:
	Total Assets	$	728,501		$	382,035
	Total Liabilities	$	804,884		$	878,571
	As of December 31, 2013:
	Total Assets	$	775,012		$	356,871
	Total Liabilities	$	812,725		$	887,413
	-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 June 30, 2014 and December 31, 2013, a total of $33,540 could become recourse debt to the Company. As of June 30, 2014 and December 31, 2013, the Company had an indemnity agreement from a joint venture partner for $16,770 of the guaranteed amount.
	Included in mortgage notes payable are amounts due to affiliates of Northwestern Mutual Life ("NML") of $706,584 and $712,455 as of June 30, 2014 and December 31, 2013, 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 on these borrowings was $9,623 and $6,854 for the three months ended June 30, 2014 and 2013, respectively, and $19,347 and $13,797 for the six months ended June 30, 2014 and 2013, 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 $855 and $2,334 for the three months ended June 30, 2014 and 2013, respectively, and $2,279 and $3,259 for the six months ended June 30, 2014 and 2013, respectively.
Combined and Condensed Statements of Operations of Unconsolidated Joint Ventures	'
	Combined and Condensed Statements of Operations of Unconsolidated Joint Ventures:
		Pacific			Tysons			Other			Total
		Premier			Corner			Joint
		Retail LP			LLC			Ventures
	Three Months Ended June 30, 2014
	Revenues:
	Minimum rents	$	25,654		$	15,696		$	56,289		$	97,639
	Percentage rents	550			180			3,264			3,994
	Tenant recoveries	11,379			11,489			24,260			47,128
	Other	1,613			929			8,443			10,985
	Total revenues	39,196			28,294			92,256			159,746
	Expenses:
	Shopping center and operating expenses	10,682			9,521			30,258			50,461
	Interest expense	9,831			7,653			19,495			36,979
	Depreciation and amortization	8,750			4,756			21,239			34,745
	Total operating expenses	29,263			21,930			70,992			122,185
	Loss on remeasurement, sale or write down of assets, net	(6,226		)	—			(42		)	(6,268		)
	Net income	$	3,707		$	6,364		$	21,222		$	31,293
	Company's equity in net income	$	1,218		$	1,611		$	11,074		$	13,903
	Three Months Ended June 30, 2013
	Revenues:
	Minimum rents	$	31,221		$	15,685		$	59,969		$	106,875
	Percentage rents	594			180			2,936			3,710
	Tenant recoveries	14,486			11,697			26,688			52,871
	Other	1,643			652			11,367			13,662
	Total revenues	47,944			28,214			100,960			177,118
	Expenses:
	Shopping center and operating expenses	14,269			8,519			34,790			57,578
	Interest expense	11,293			1,784			20,929			34,006
	Depreciation and amortization	10,720			4,501			23,299			38,520
	Total operating expenses	36,282			14,804			79,018			130,104
	Gain on remeasurement, sale or write down of assets, net	144,349			—			891			145,240
	Net income	$	156,011		$	13,410		$	22,833		$	192,254
	Company's equity in net income	$	78,426		$	5,161		$	8,614		$	92,201
		Pacific			Tysons			Other			Total
		Premier			Corner			Joint
		Retail LP			LLC			Ventures
	Six Months Ended June 30, 2014
	Revenues:
	Minimum rents	$	51,734		$	31,974		$	112,188		$	195,896
	Percentage rents	1,209			604			4,232			6,045
	Tenant recoveries	23,119			23,383			49,371			95,873
	Other	2,690			1,616			16,298			20,604
	Total revenues	78,752			57,577			182,089			318,418
	Expenses:
	Shopping center and operating expenses	21,813			19,680			64,138			105,631
	Interest expense	19,929			15,483			39,066			74,478
	Depreciation and amortization	17,548			9,358			42,762			69,668
	Total operating expenses	59,290			44,521			145,966			249,777
	Loss on remeasurement, sale or write down of assets, net	(6,312		)	—			(60		)	(6,372		)
	Net income	$	13,150		$	13,056		$	36,063		$	62,269
	Company's equity in net income	$	5,486		$	3,369		$	18,817		$	27,672
	Six Months Ended June 30, 2013
	Revenues:
	Minimum rents	$	64,353		$	31,182		$	120,930		$	216,465
	Percentage rents	1,583			746			4,238			6,567
	Tenant recoveries	28,440			22,721			53,900			105,061
	Other	2,894			1,570			18,780			23,244
	Total revenues	97,270			56,219			197,848			351,337
	Expenses:
	Shopping center and operating expenses	28,717			17,001			70,961			116,679
	Interest expense	22,867			4,024			45,046			71,937
	Depreciation and amortization	21,630			8,931			45,120			75,681
Total operating expenses	73,214			29,956			161,127			264,297
Gain on remeasurement, sale or write down of assets, net	144,349			—			701			145,050
Net income	$	168,405		$	26,263		$	37,422		$	232,090
Company's equity in net income	$	84,117		$	10,038		$	16,161		$	110,316

Property_Tables

Property: (Tables)	6 Months Ended
	Jun. 30, 2014
Property, Plant and Equipment [Abstract]	'
Components of property	'
	Property consists of the following:
		June 30,			December 31,
		2014			2013
	Land	$	1,716,154		$	1,707,005
	Buildings and improvements	6,508,046			6,555,212
	Tenant improvements	539,313			537,754
	Equipment and furnishings	155,094			152,198
	Construction in progress	285,816			229,169
		9,204,423			9,181,338
	Less accumulated depreciation	(1,648,359		)	(1,559,572		)
		$	7,556,064		$	7,621,766

Deferred_Charges_and_Other_Ass1

Deferred Charges and Other Assets, net: (Tables)	6 Months Ended
	Jun. 30, 2014
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:
		June 30,			December 31,
		2014			2013
	Leasing	$	221,671		$	223,038
	Financing	50,372			51,695
	Intangible assets:
	In-place lease values	190,390			205,651
	Leasing commissions and legal costs	47,754			50,594
	Above-market leases	114,493			118,770
	Deferred tax assets	34,426			31,356
	Deferred compensation plan assets	34,265			30,932
	Other assets	61,916			65,793
		755,287			777,829
	Less accumulated amortization(1)	(248,509		)	(244,771		)
		$	506,778		$	533,058
	-1	Accumulated amortization includes $88,752 and $89,141 relating to in-place lease values, leasing commissions and legal costs at June 30, 2014 and December 31, 2013, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $11,360 and $14,424 for the three months ended June 30, 2014 and 2013, respectively, and $24,098 and $28,090 for the six months ended June 30, 2014 and 2013, 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:
		June 30,			December 31,
		2014			2013
	Above-Market Leases
	Original allocated value	$	114,493		$	118,770
	Less accumulated amortization	(51,628		)	(46,912		)
		$	62,865		$	71,858
	Below-Market Leases(1)
	Original allocated value	$	186,398		$	187,537
	Less accumulated amortization	(85,325		)	(79,271		)
		$	101,073		$	108,266
	-1	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable_Tables

Mortgage Notes Payable: (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Mortgage notes payable	'
	Mortgage notes payable at June 30, 2014 and December 31, 2013 consist of the following:
			Carrying Amount of Mortgage Notes(1)
			June 30, 2014					December 31, 2013
	Property Pledged as Collateral		Related Party			Other		Related Party		Other		Effective Interest		Monthly		Maturity
												Rate(2)		Debt		Date(4)
														Service(3)
	Arrowhead Towne Center		$	—		$	232,388	$	—	$	236,028	2.76	%	$	1,131	2018
	Camelback Colonnade		—			48,529		—		49,120		2.16	%	178		2015
	Chandler Fashion Center(5)		—			200,000		—		200,000		3.77	%	625		2019
	Danbury Fair Mall		115,712			115,712		117,120		117,120		5.53	%	1,538		2020
	Deptford Mall		—			199,726		—		201,622		3.76	%	947		2023
	Deptford Mall		—			14,419		—		14,551		6.46	%	101		2016
	Eastland Mall		—			168,000		—		168,000		5.79	%	811		2016
	Fashion Outlets of Chicago(6)		—			113,040		—		91,383		2.95	%	233		2017
	Fashion Outlets of Niagara Falls USA		—			122,706		—		124,030		4.89	%	727		2020
	Flagstaff Mall		—			37,000		—		37,000		5.03	%	151		2015
	FlatIron Crossing		—			264,778		—		268,000		3.9	%	1,393		2021
	Freehold Raceway Mall(5)		—			231,255		—		232,900		4.2	%	805		2018
	Fresno Fashion Fair		78,754			78,753		79,391		79,390		6.76	%	1,104		2015
	Great Northern Mall(7)		—			34,993		—		35,484		6.54	%	234		2015
	Green Acres Mall		—			316,694		—		319,850		3.61	%	1,447		2021
	Kings Plaza Shopping Center		—			485,674		—		490,548		3.67	%	2,229		2019
	Northgate Mall(8)		—			64,000		—		64,000		3.03	%	128		2017
	Oaks, The		—			212,239		—		214,239		4.14	%	1,064		2022
	Pacific View		—			134,531		—		135,835		4.08	%	668		2022
	Santa Monica Place		—			232,904		—		235,445		2.99	%	1,004		2018
	SanTan Village Regional Center		—			135,222		—		136,629		3.14	%	589		2019
	South Plains Mall(9)		—			72,089		—		99,833		4.78	%	383		2015
	Superstition Springs Center		—			68,237		—		68,395		1.98	%	138		2016
	Towne Mall		—			22,802		—		22,996		4.48	%	117		2022
	Tucson La Encantada		72,192			—		72,870		—		4.23	%	368		2022
	Valley Mall		—			41,765		—		42,155		5.85	%	280		2016
	Valley River Center		—			120,000		—		120,000		5.59	%	558		2016
	Victor Valley, Mall of(10)		—			90,000		—		90,000		2.71	%	180		2014
	Vintage Faire Mall		—			98,370		—		99,083		5.81	%	586		2015
	Westside Pavilion		—			150,905		—		152,173		4.49	%	783		2022
			$	266,658		$	4,106,731	$	269,381	$	4,145,809
	-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 into 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	June 30,			December 31,
		2014			2013
	Arrowhead Towne Center	$	13,105		$	14,642
	Camelback Colonnade	1,528			2,120
	Deptford Mall	(11		)	(14		)
	Fashion Outlets of Niagara Falls USA	5,878			6,342
	Superstition Springs Center	737			895
	Valley Mall	(175		)	(219		)
		$	21,062		$	23,766
	-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	A 49.9% interest in the loan has been assumed by a third party in connection with a co-venture arrangement (See Note 10—Co-Venture Arrangement).
	-6	The construction loan on the property allows for borrowings of up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At June 30, 2014 and December 31, 2013, the total interest rate was 2.95% and 2.96%, respectively.
	-7	On March 24, 2014, the loan was extended to January 1, 2015.
	-8	The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At June 30, 2014 and December 31, 2013, the total interest rate was 3.03% and 3.04%, respectively.
	-9	On February 7, 2014, the Company paid off in full one of the two loans on the property, which resulted in a loss of $358 on the early extinguishment of debt.
	-10	The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At June 30, 2014 and December 31, 2013, the total interest rate was 2.71% and 2.73%, respectively.
Debt premiums (discounts) on mortgage notes payable	'
	Debt premiums (discounts) consist of the following:
	Property Pledged as Collateral	June 30,			December 31,
		2014			2013
	Arrowhead Towne Center	$	13,105		$	14,642
	Camelback Colonnade	1,528			2,120
	Deptford Mall	(11		)	(14		)
	Fashion Outlets of Niagara Falls USA	5,878			6,342
	Superstition Springs Center	737			895
	Valley Mall	(175		)	(219		)
		$	21,062		$	23,766

Acquisitions_Tables

Acquisitions: (Tables)	6 Months Ended
	Jun. 30, 2014
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 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 Cascade Mall:
	Property	$	28,924
	Deferred charges	6,660
	Other assets	202
	Total assets acquired	35,786
	Other accrued liabilities	4,786
	Total liabilities assumed	4,786
	Fair value of acquired net assets (at 100% ownership)	$	31,000
	The following is a summary of the allocation of the fair value of Superstition Springs Center:
	Property	$	114,373
	Deferred charges	12,353
	Cash and cash equivalents	8,894
	Tenant receivables	51
	Other assets	11,535
	Total assets acquired	147,206
	Mortgage note payable	68,448
	Accounts payable	119
	Other accrued liabilities	7,637
	Total liabilities assumed	76,204
	Fair value of acquired net assets (at 100% ownership)	$	71,002
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	$	46,162
	Less debt assumed	(22,500		)
	Carrying value of investment	32,476
	Remeasurement gain	14,864
	Fair value of acquired net assets (at 100% ownership)	$	71,002
Summary of gain on remeasurement of existing investment	'
	The following is the reconciliation of the purchase price to the fair value of the acquired net assets:
	Purchase price	$	15,233
	Carrying value of investment	15,767
	Fair value of acquired net assets (at 100% ownership)	$	31,000
	The Company determined that the purchase price represented the fair value of the additional ownership interest in Superstition Springs Center that was acquired.
	Fair value of existing ownership interest (at 66.7% ownership)	$	47,340
	Carrying value of investment	(32,476		)
	Gain on remeasurement	$	14,864
	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 six months ended June 30, 2014 and 2013 assumes all of the above transactions took place on January 1, 2013:
		For the Three Months Ended June 30,					For the Six Months Ended June 30,
		2014			2013		2014		2013
	Pro forma revenue (1)	$	255,987		$	254,720	$	522,110	$	508,655
	Pro forma income from continuing operations (1)	$	18,199		$	92,610	$	37,917	$	113,785
	-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, 2013, 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)	6 Months Ended
	Jun. 30, 2014
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 June 30,				For the Six Months Ended June 30,
		2014		2013		2014		2013
	Management Fees	$	4,890	$	5,506	$	9,714	$	11,000
	Development and Leasing Fees	2,882		2,779		5,378		4,475
		$	7,772	$	8,285	$	15,092	$	15,475

Share_and_UnitBased_Plans_Tabl

Share and Unit-Based Plans: (Tables)	6 Months Ended
	Jun. 30, 2014
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 June 30,						For the Six Months Ended June 30,
		2014			2013			2014				2013
	LTIP Units	$	3,428		$	4,692		$	21,668			$	7,650
	Stock awards	83			122			197				232
	Stock units	1,039			667			2,721				2,491
	Stock options	4			4			8				8
	Phantom stock units	300			246			606				487
		$	4,854		$	5,731		$	25,200			$	10,868
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, 2014	—		$	—		19,001			$	56.77			17,575		$	58.66	137,318		$	57.24
	Granted	589,443		53.18			—			—				7,451		61.78		70,389		60.23
	Vested	(246,471	)	60.25			(9,812	)		54.45				(9,771	)	60.91		(68,035	)	55.08
	Forfeited	—		—			—			—				—		—		—		—
	Balance at June 30, 2014	342,972		$	48.11		9,189			$	59.25			15,255		$	58.74	139,672		$	59.8
	-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 stock appreciations rights ("SARs") and stock options outstanding:
		SARs					Stock Options
		Shares		Value(1)			Shares			Value(1)
	Balance at January 1, 2014	1,070,991		$	56.66		10,068			$	59.57
	Granted	—		—			—			—
	Exercised	(5,000	)	56.63			—			—
	Forfeited	—		—			—			—
	Balance at June 30, 2014	1,065,991		$	56.66		10,068			$	59.57
	-1	Value represents the weighted average exercise price.

Income_Taxes_Tables

Income Taxes: (Tables)	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Schedule of income tax benefit of TRSs	'
	The income tax benefit (provision) of the TRSs are as follows:
		For the Three Months Ended June 30,				For the Six Months Ended June 30,
		2014		2013		2014		2013
	Current	$	—	$	125	$	—	$	(156	)
	Deferred	2,898		1,352		3,070		1,877
	Income tax benefit	$	2,898	$	1,477	$	3,070	$	1,721

Organization_Details

Organization: (Details)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
	entity	The Macerich Partnership, L.P.	The Macerich Partnership, L.P.
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]	'	'	'
Ownership interest in operating partnership (as a percent)	'	93.00%	93.00%
Number of management companies (in entities)	7	'	'

Earnings_per_Share_EPS_Details

Earnings per Share ("EPS"): (Details) (USD $)	3 Months Ended				6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Numerator	'		'		'		'
Income from continuing operations	$17,986		$91,418		$37,629		$111,389
Income from discontinued operations	0		143,398		0		145,956
Net income attributable to noncontrolling interests	-1,898		-15,819		-3,722		-20,256
Net income attributable to the Company	16,088		218,997		33,907		237,089
Allocation of earnings to participating securities	-120		-217		-248		-216
Numerator for basic earnings per share—net income attributable to common stockholders	15,968		218,780		33,659		236,873
Numerator for diluted earnings per share-net income (loss) available to common stockholders	$15,968		$218,780		$33,659		$236,873
Denominator (in shares)	'		'		'		'
Denominator for basic earnings per share—weighted average number of common shares outstanding	140,894		139,372		140,831		138,460
Effect of dilutive securities:	'		'		'		'
Share and unit-based compensation plans	142	[1]	154	[1]	98	[1]	121	[1]
Denominator for diluted earnings per share—weighted average number of common shares outstanding	141,036	[1]	139,526	[1]	140,929	[1]	138,581	[1]
Earnings per common share—basic: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.11		$0.61		$0.24		$0.73
Discontinued operations	$0		$0.96		$0		$0.98
Net income attributable to common stockholders	$0.11		$1.57		$0.24		$1.71
Earnings per common share—diluted: (in dollars per share)	'		'		'		'
Income from continuing operations	$0.11		$0.61		$0.24		$0.73
Discontinued operations	$0		$0.96		$0		$0.98
Net income attributable to common stockholders	$0.11		$1.57		$0.24		$1.71
[1]	Diluted EPS excludes 184,304 convertible preferred units for the three and six months ended June 30, 2014 and 2013 as their impact was antidilutive.Diluted EPS excludes 10,113,486 and 9,938,795 Operating Partnership units ("OP Units") for the three months ended June 30, 2014 and 2013, respectively, and 10,052,805 and 10,072,120 OP Units for the six months ended June 30, 2014 and 2013, respectively, as their impact was antidilutive.

Earnings_per_Share_EPS_Details1

Earnings per Share ("EPS"): (Details 2)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Convertible non-participating preferred units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities excluded from Diluted EPS (in shares)	184,304	184,304	184,304	184,304
Partnership unit	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Securities excluded from Diluted EPS (in shares)	10,113,486	9,938,795	10,052,805	10,072,120

Investments_in_Unconsolidated_2

Investments in Unconsolidated Joint Ventures - Narrative (Details) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

0 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Dec. 11, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Sep. 17, 2013

Sep. 16, 2013

Jul. 31, 2013

29-May-13

Jun. 12, 2013

Oct. 08, 2013

Oct. 24, 2013

Oct. 24, 2013

Jun. 04, 2014

Jun. 04, 2014

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

Kitsap Mall

Ridgmar Mall

Superstition Springs Land I

Superstition Springs Land I

Cascade Mall

Cascade Mall

sqft

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

sqft

sqft

sqft

sqft

sqft

sqft

Investments in unconsolidated joint ventures:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

'

'

'

'

'

'

'

'

619,000

'

695,000

582,000

846,000

1,273,000

'

1,082,000

'

593,000

Proceeds from sale

$292,500

'

'

'

'

'

'

'

'

'

'

'

'

'

$60,900

'

'

'

'

Proceeds from sale of property

'

'

'

'

'

'

'

'

'

'

'

127,000

185,000

127,000

'

'

'

'

'

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

'

-6,268

145,240

-6,372

145,050

-6,226

144,349

-6,312

144,349

'

'

38,447

89,157

55,150

6,243

'

'

'

'

Gain on sale of property, pro rata share

'

'

'

'

'

'

'

'

'

'

'

18,251

44,424

28,127

3,121

'

'

'

'

Ownership percentage

'

'

'

'

'

'

'

'

'

'

73.20%

'

'

'

'

'

'

'

'

Additional ownership interest acquired (as a percent)

'

'

'

'

'

'

'

'

'

67.50%

'

'

'

'

'

'

33.30%

'

49.00%

Repayments of long-term debt

'

'

'

121,571

2,156,635

'

'

'

'

'

'

'

'

'

51,657

'

'

'

'

Distributions to Co-venture Partner

'

'

'

8,693

9,717

'

'

'

'

'

'

'

'

'

9,243

'

'

'

'

Purchase price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

46,162

'

'

'

Purchase price funded by cash payment on acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,662

'

15,233

'

Purchase price paid through assumption of debt by the Company

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$22,500

'

'

'

Investments_in_Unconsolidated_3

Investments in Unconsolidated Joint Ventures - Combined Condensed Balance Sheets of Unconsolidated Joint Ventures (Details) (USD $)	Jun. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Assets:	'		'
Properties, net	$3,546,003	[1]	$3,435,737	[1]
Other assets	351,692	[1]	295,719	[1]
Total assets	3,897,695	[1]	3,731,456	[1]
Liabilities and partners' capital:	'		'
Mortgage notes payable	3,495,673	[1],[2]	3,518,215	[1],[2]
Other liabilities	213,190	[1]	202,444	[1]
Company's capital (deficit)	62,527	[1]	-25,367	[1]
Outside partners' capital	126,305	[1]	36,164	[1]
Total liabilities and partners' capital	3,897,695	[1]	3,731,456	[1]
Investments in unconsolidated joint ventures:	'		'
Company's capital (deficit)	62,527	[1]	-25,367	[1]
Basis adjustment	473,410	[3]	474,658	[3]
Investments in unconsolidated joint ventures	535,937		449,291
Assets—Investments in unconsolidated joint ventures	797,010		701,483
Liabilities—Distributions in excess of investments in unconsolidated joint ventures	($261,073)		($252,192)
[1]	These amounts include the assets and liabilities of the following joint ventures as of June 30, 2014 and December 31, 2013: PacificPremierRetail LP TysonsCorner LLCAs of June 30, 2014: Total Assets$728,501 $382,035Total Liabilities$804,884 $878,571As of December 31, 2013: Total Assets$775,012 $356,871Total Liabilities$812,725 $887,413
[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 June 30, 2014 and December 31, 2013, a total of $33,540 could become recourse debt to the Company. As of June 30, 2014 and December 31, 2013, the Company had an indemnity agreement from a joint venture partner for $16,770 of the guaranteed amount.Included in mortgage notes payable are amounts due to affiliates of Northwestern Mutual Life ("NML") of $706,584 and $712,455 as of June 30, 2014 and December 31, 2013, 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 on these borrowings was $9,623 and $6,854 for the three months ended June 30, 2014 and 2013, respectively, and $19,347 and $13,797 for the six months ended June 30, 2014 and 2013, 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 $855 and $2,334 for the three months ended June 30, 2014 and 2013, respectively, and $2,279 and $3,259 for the six months ended June 30, 2014 and 2013, respectively.

Investments_in_Unconsolidated_4

Investments in Unconsolidated Joint Ventures - Assets and Liabilities (Details) (USD $)	Jun. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Investments in unconsolidated joint ventures:	'		'
Total Assets	$3,897,695	[1]	$3,731,456	[1]
Pacific Premier Retail LP	'		'
Investments in unconsolidated joint ventures:	'		'
Total Assets	728,501		775,012
Total Liabilities	804,884		812,725
Tysons Corner LLC	'		'
Investments in unconsolidated joint ventures:	'		'
Total Assets	382,035		356,871
Total Liabilities	$878,571		$887,413
[1]	These amounts include the assets and liabilities of the following joint ventures as of June 30, 2014 and December 31, 2013: PacificPremierRetail LP TysonsCorner LLCAs of June 30, 2014: Total Assets$728,501 $382,035Total Liabilities$804,884 $878,571As of December 31, 2013: Total Assets$775,012 $356,871Total Liabilities$812,725 $887,413

Investments_in_Unconsolidated_5

Investments in Unconsolidated Joint Ventures - Balance Sheet Footnotes (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Investments in unconsolidated joint ventures:	'	'	'	'	'
Mortgage notes payable that could become recourse debt to the Company	$33,540	'	$33,540	'	$33,540
Indemnity of guaranteed amount	16,770	'	16,770	'	16,770
Amortization of difference between cost of investments and book value of underlying equity	855	2,334	2,279	3,259	'
Northwestern Mutual Life (NML)	'	'	'	'	'
Investments in unconsolidated joint ventures:	'	'	'	'	'
Mortgage notes payable to affiliate	706,584	'	706,584	'	712,455
Interest expense on borrowings from related party	$9,623	$6,854	$19,347	$13,797	'

Investments_in_Unconsolidated_6

Investments in Unconsolidated Joint Ventures - Combined Condensed Statements of Operations of Unconsolidated Joint Ventures (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:	'	'	'	'
Minimum rents	$97,639	$106,875	$195,896	$216,465
Percentage rents	3,994	3,710	6,045	6,567
Tenant recoveries	47,128	52,871	95,873	105,061
Other	10,985	13,662	20,604	23,244
Total revenues	159,746	177,118	318,418	351,337
Expenses:	'	'	'	'
Shopping center and operating expenses	50,461	57,578	105,631	116,679
Interest expense	36,979	34,006	74,478	71,937
Depreciation and amortization	34,745	38,520	69,668	75,681
Total operating expenses	122,185	130,104	249,777	264,297
Gain (loss) on remeasurement, sale or write down of assets, net	-6,268	145,240	-6,372	145,050
Net income	31,293	192,254	62,269	232,090
Company's equity in net income	13,903	92,201	27,672	110,316
Pacific Premier Retail LP	'	'	'	'
Revenues:	'	'	'	'
Minimum rents	25,654	31,221	51,734	64,353
Percentage rents	550	594	1,209	1,583
Tenant recoveries	11,379	14,486	23,119	28,440
Other	1,613	1,643	2,690	2,894
Total revenues	39,196	47,944	78,752	97,270
Expenses:	'	'	'	'
Shopping center and operating expenses	10,682	14,269	21,813	28,717
Interest expense	9,831	11,293	19,929	22,867
Depreciation and amortization	8,750	10,720	17,548	21,630
Total operating expenses	29,263	36,282	59,290	73,214
Gain (loss) on remeasurement, sale or write down of assets, net	-6,226	144,349	-6,312	144,349
Net income	3,707	156,011	13,150	168,405
Company's equity in net income	1,218	78,426	5,486	84,117
Tysons Corner LLC	'	'	'	'
Revenues:	'	'	'	'
Minimum rents	15,696	15,685	31,974	31,182
Percentage rents	180	180	604	746
Tenant recoveries	11,489	11,697	23,383	22,721
Other	929	652	1,616	1,570
Total revenues	28,294	28,214	57,577	56,219
Expenses:	'	'	'	'
Shopping center and operating expenses	9,521	8,519	19,680	17,001
Interest expense	7,653	1,784	15,483	4,024
Depreciation and amortization	4,756	4,501	9,358	8,931
Total operating expenses	21,930	14,804	44,521	29,956
Gain (loss) on remeasurement, sale or write down of assets, net	0	0	0	0
Net income	6,364	13,410	13,056	26,263
Company's equity in net income	1,611	5,161	3,369	10,038
Other Joint Ventures	'	'	'	'
Revenues:	'	'	'	'
Minimum rents	56,289	59,969	112,188	120,930
Percentage rents	3,264	2,936	4,232	4,238
Tenant recoveries	24,260	26,688	49,371	53,900
Other	8,443	11,367	16,298	18,780
Total revenues	92,256	100,960	182,089	197,848
Expenses:	'	'	'	'
Shopping center and operating expenses	30,258	34,790	64,138	70,961
Interest expense	19,495	20,929	39,066	45,046
Depreciation and amortization	21,239	23,299	42,762	45,120
Total operating expenses	70,992	79,018	145,966	161,127
Gain (loss) on remeasurement, sale or write down of assets, net	-42	891	-60	701
Net income	21,222	22,833	36,063	37,422
Company's equity in net income	$11,074	$8,614	$18,817	$16,161

Property_Details

Property: (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Land	$1,716,154	'	$1,716,154	'	$1,707,005
Buildings and improvements	6,508,046	'	6,508,046	'	6,555,212
Tenant improvements	539,313	'	539,313	'	537,754
Equipment and furnishings	155,094	'	155,094	'	152,198
Construction in progress	285,816	'	285,816	'	229,169
Total	9,204,423	'	9,204,423	'	9,181,338
Less accumulated depreciation	-1,648,359	'	-1,648,359	'	-1,559,572
Property, net	7,556,064	'	7,556,064	'	7,621,766
Depreciation expenses	68,017	65,737	136,495	131,633	'
Impairment loss	8,516	'	8,516	'	'
(Loss) gain on remeasurement, sale or write down of assets, net	-9,455	-798	-11,065	4,030	'
Gain on the sale of assets	238	'	238	5,401	'
Write off of development cost	-1,177	-798	-1,102	-1,371	'
Rotterdam Square	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
(Loss) gain on remeasurement, sale or write down of assets, net	'	'	($1,685)	'	'
Property area (in square feet)	585,000	'	585,000	'	'
Somersville Town Center	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property area (in square feet)	348,000	'	348,000	'	'
Lake Square Mall	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property area (in square feet)	559,000	'	559,000	'	'

Tenant_and_Other_Receivables_n1

Tenant and Other Receivables, net: (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Mar. 17, 2014	Jun. 30, 2014	Mar. 17, 2014
In Thousands, unless otherwise specified			Accrued percentage rents	Accrued percentage rents	6.5% Note Receivable	6.5% Note Receivable	5.0% Note Receivable	5.0% Note Receivable
Components of tenant and other receivables, net	'	'	'	'	'	'	'	'
Allowance for doubtful accounts	$5,178	$2,878	'	'	'	'	'	'
Accounts receivable	'	'	1,758	9,824	'	'	'	'
Deferred rent receivable due to straight-line rent adjustments	55,902	53,380	'	'	'	'	'	'
Notes receivable	'	'	'	'	$6,484	$6,500	$2,879	$3,103
Note receivable, interest rate (as a percent)	'	'	'	'	'	6.46%	'	5.00%

Deferred_Charges_and_Other_Ass2

Deferred Charges and Other Assets, net: (Details) (USD $)	3 Months Ended			6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'		'	'		'	'
Leasing	$221,671		'	$221,671		'	$223,038
Financing	50,372		'	50,372		'	51,695
Intangible assets:	'		'	'		'	'
In-place lease values	190,390		'	190,390		'	205,651
Leasing commissions and legal costs	47,754		'	47,754		'	50,594
Above-market leases	114,493		'	114,493		'	118,770
Deferred tax assets	34,426		'	34,426		'	31,356
Deferred compensation plan assets	34,265		'	34,265		'	30,932
Other assets	61,916		'	61,916		'	65,793
Deferred charges and other assets, gross	755,287		'	755,287		'	777,829
Less accumulated amortization	-248,509	[1]	'	-248,509	[1]	'	-244,771	[1]
Deferred charges and other assets, net	506,778		'	506,778		'	533,058
Accumulated amortization for intangible assets	88,752		'	88,752		'	89,141
Amortization expense for intangible assets	$11,360		$14,424	$24,098		$28,090	'
[1]	Accumulated amortization includes $88,752 and $89,141 relating to in-place lease values, leasing commissions and legal costs at June 30, 2014 and December 31, 2013, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $11,360 and $14,424 for the three months ended June 30, 2014 and 2013, respectively, and $24,098 and $28,090 for the six months ended June 30, 2014 and 2013, respectively.

Deferred_Charges_and_Other_Ass3

Deferred Charges and Other Assets, net: (Details 2) (USD $)	Jun. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Allocated values of leases	'		'
Less accumulated amortization	($88,752)		($89,141)
Above-Market Leases	'		'
Allocated values of leases	'		'
Original allocated value	114,493		118,770
Less accumulated amortization	-51,628		-46,912
Allocated value net	62,865		71,858
Below-Market Leases	'		'
Allocated values of leases	'		'
Original allocated value	186,398	[1]	187,537	[1]
Less accumulated amortization	-85,325	[1]	-79,271	[1]
Allocated value net	$101,073	[1]	$108,266	[1]
[1]	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable_Schedul

Mortgage Notes Payable - Schedule of Mortgage Notes Payable (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	$266,658	[1]	$269,381	[1]
Carrying Amount of Mortgage Notes, Other	4,106,731	[1]	4,145,809	[1]
Arrowhead Towne Center	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	232,388	[1]	236,028	[1]
Effective Interest Rate (as a percent)	2.76%	[2]	'
Monthly Debt Service	1,131	[3]	'
Camelback Colonnade	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	48,529	[1]	49,120	[1]
Effective Interest Rate (as a percent)	2.16%	[2]	'
Monthly Debt Service	178	[3]	'
Chandler Fashion Center	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[4]	0	[1],[4]
Carrying Amount of Mortgage Notes, Other	200,000	[1],[4]	200,000	[1],[4]
Effective Interest Rate (as a percent)	3.77%	[2],[4]	'
Monthly Debt Service	625	[3],[4]	'
Danbury Fair Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	115,712	[1]	117,120	[1]
Carrying Amount of Mortgage Notes, Other	115,712	[1]	117,120	[1]
Effective Interest Rate (as a percent)	5.53%	[2]	'
Monthly Debt Service	1,538	[3]	'
Deptford Mall One	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	199,726	[1]	201,622	[1]
Effective Interest Rate (as a percent)	3.76%	[2]	'
Monthly Debt Service	947	[3]	'
Deptford Mall Two	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	14,419	[1]	14,551	[1]
Effective Interest Rate (as a percent)	6.46%	[2]	'
Monthly Debt Service	101	[3]	'
Eastland Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	168,000	[1]	168,000	[1]
Effective Interest Rate (as a percent)	5.79%	[2]	'
Monthly Debt Service	811	[3]	'
Fashion Outlets of Chicago	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[5]	0	[1],[5]
Carrying Amount of Mortgage Notes, Other	113,040	[1],[5]	91,383	[1],[5]
Effective Interest Rate (as a percent)	2.95%	[2],[5]	2.96%
Monthly Debt Service	233	[3],[5]	'
Fashion Outlets of Niagara Falls USA	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	122,706	[1]	124,030	[1]
Effective Interest Rate (as a percent)	4.89%	[2]	'
Monthly Debt Service	727	[3]	'
Flagstaff Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	37,000	[1]	37,000	[1]
Effective Interest Rate (as a percent)	5.03%	[2]	'
Monthly Debt Service	151	[3]	'
FlatIron Crossing	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	264,778	[1]	268,000	[1]
Effective Interest Rate (as a percent)	3.90%	[2]	'
Monthly Debt Service	1,393	[3]	'
Freehold Raceway Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[4]	0	[1],[4]
Carrying Amount of Mortgage Notes, Other	231,255	[1],[4]	232,900	[1],[4]
Effective Interest Rate (as a percent)	4.20%	[2],[4]	'
Monthly Debt Service	805	[3],[4]	'
Fresno Fashion Fair	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	78,754	[1]	79,391	[1]
Carrying Amount of Mortgage Notes, Other	78,753	[1]	79,390	[1]
Effective Interest Rate (as a percent)	6.76%	[2]	'
Monthly Debt Service	1,104	[3]	'
Great Northern Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[6]	0	[1],[6]
Carrying Amount of Mortgage Notes, Other	34,993	[1],[6]	35,484	[1],[6]
Effective Interest Rate (as a percent)	6.54%	[2],[6]	'
Monthly Debt Service	234	[3],[6]	'
Green Acres Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	316,694	[1]	319,850	[1]
Effective Interest Rate (as a percent)	3.61%	[2]	'
Monthly Debt Service	1,447	[3]	'
Kings Plaza	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	485,674	[1]	490,548	[1]
Effective Interest Rate (as a percent)	3.67%	[2]	'
Monthly Debt Service	2,229	[3]	'
The Mall at Northgate	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[7]	0	[1],[7]
Carrying Amount of Mortgage Notes, Other	64,000	[1],[7]	64,000	[1],[7]
Effective Interest Rate (as a percent)	3.03%	[2],[7]	3.04%
Monthly Debt Service	128	[3],[7]	'
The Oaks	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	212,239	[1]	214,239	[1]
Effective Interest Rate (as a percent)	4.14%	[2]	'
Monthly Debt Service	1,064	[3]	'
Pacific View	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	134,531	[1]	135,835	[1]
Effective Interest Rate (as a percent)	4.08%	[2]	'
Monthly Debt Service	668	[3]	'
Santa Monica Place	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	232,904	[1]	235,445	[1]
Effective Interest Rate (as a percent)	2.99%	[2]	'
Monthly Debt Service	1,004	[3]	'
SanTan Village Regional Center	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	135,222	[1]	136,629	[1]
Effective Interest Rate (as a percent)	3.14%	[2]	'
Monthly Debt Service	589	[3]	'
South Plains Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[8]	0	[1],[8]
Carrying Amount of Mortgage Notes, Other	72,089	[1],[8]	99,833	[1],[8]
Effective Interest Rate (as a percent)	4.78%	[2],[8]	'
Monthly Debt Service	383	[3],[8]	'
Superstition Springs Center	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	68,237	[1]	68,395	[1]
Effective Interest Rate (as a percent)	1.98%	[2]	'
Monthly Debt Service	138	[3]	'
Towne Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	22,802	[1]	22,996	[1]
Effective Interest Rate (as a percent)	4.48%	[2]	'
Monthly Debt Service	117	[3]	'
Tucson La Encantada	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	72,192	[1]	72,870	[1]
Carrying Amount of Mortgage Notes, Other	0	[1]	0	[1]
Effective Interest Rate (as a percent)	4.23%	[2]	'
Monthly Debt Service	368	[3]	'
Valley Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	41,765	[1]	42,155	[1]
Effective Interest Rate (as a percent)	5.85%	[2]	'
Monthly Debt Service	280	[3]	'
Valley River Center	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	120,000	[1]	120,000	[1]
Effective Interest Rate (as a percent)	5.59%	[2]	'
Monthly Debt Service	558	[3]	'
Mall of Victor Valley	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1],[9]	0	[1],[9]
Carrying Amount of Mortgage Notes, Other	90,000	[1],[9]	90,000	[1],[9]
Effective Interest Rate (as a percent)	2.71%	[2],[9]	2.73%
Monthly Debt Service	180	[3],[9]	'
Vintage Faire Mall	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	98,370	[1]	99,083	[1]
Effective Interest Rate (as a percent)	5.81%	[2]	'
Monthly Debt Service	586	[3]	'
Westside Pavilion	'		'
Mortgage loans payable on real estate	'		'
Carrying Amount of Mortgage Notes, Related Party	0	[1]	0	[1]
Carrying Amount of Mortgage Notes, Other	150,905	[1]	152,173	[1]
Effective Interest Rate (as a percent)	4.49%	[2]	'
Monthly Debt Service	$783	[3]	'
[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 into 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 CollateralJune 30, 2014 December 31, 2013Arrowhead Towne Center$13,105 $14,642Camelback Colonnade1,528 2,120Deptford Mall(11) (14)Fashion Outlets of Niagara Falls USA5,878 6,342Superstition Springs Center737 895Valley Mall(175) (219) $21,062 $23,766
[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]	A 49.9% interest in the loan has been assumed by a third party in connection with a co-venture arrangement (See Note 10—Co-Venture Arrangement).
[5]	The construction loan on the property allows for borrowings of up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At June 30, 2014 and December 31, 2013, the total interest rate was 2.95% and 2.96%, respectively.
[6]	On March 24, 2014, the loan was extended to January 1, 2015.
[7]	The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At June 30, 2014 and December 31, 2013, the total interest rate was 3.03% and 3.04%, respectively.
[8]	On February 7, 2014, the Company paid off in full one of the two loans on the property, which resulted in a loss of $358 on the early extinguishment of debt.
[9]	The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At June 30, 2014 and December 31, 2013, the total interest rate was 2.71% and 2.73%, respectively.

Mortgage_Notes_Payable_Premium

Mortgage Notes Payable - Premiums and Discounts (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Mortgage loans payable on real estate	'	'
Debt premiums (discounts), net	$21,062	$23,766
Arrowhead Towne Center	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	13,105	14,642
Camelback Colonnade	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	1,528	2,120
Deptford Mall One	'	'
Mortgage loans payable on real estate	'	'
Debt discounts	-11	-14
Fashion Outlets of Niagara Falls USA	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	5,878	6,342
Superstition Springs Center	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	737	895
Valley Mall	'	'
Mortgage loans payable on real estate	'	'
Debt discounts	($175)	($219)

Mortgage_Notes_Payable_Footnot

Mortgage Notes Payable - Footnotes (Details) (USD $)

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Feb. 07, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2009

Fashion Outlets of Chicago

Fashion Outlets of Chicago

The Mall at Northgate

The Mall at Northgate

South Plains Mall

South Plains Mall

Mall of Victor Valley

Mall of Victor Valley

Freehold Raceway Mall and Chandler Fashion Center

Mortgage loans payable on real estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

49.90%

Amount of additional borrowing

'

'

'

'

'

$140,000,000

'

'

'

'

'

'

'

'

Interest rate basis

'

'

'

'

'

'LIBOR

'

'LIBOR

'

'

'

'LIBOR

'

'

Interest rate spread over basis (as a percent)

'

'

'

'

'

2.50%

'

2.25%

'

'

'

2.25%

'

'

Effective interest rate (as a percent)

'

'

'

'

'

2.95%

[1],[2]

2.96%

3.03%

[2],[3]

3.04%

'

4.78%

[2],[4]

2.71%

[2],[5]

2.73%

'

Loss on extinguishment of debt

0

1,943,000

-358,000

1,943,000

'

'

'

'

'

-358,000

'

'

'

'

Mortgage notes payable which could become recourse

88,019,000

'

88,019,000

'

77,192,000

'

'

'

'

'

'

'

'

'

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

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

Interest expense capitalized

3,098,000

2,874,000

5,583,000

5,342,000

'

'

'

'

'

'

'

'

'

'

Fair value of mortgage notes payable

$4,450,277,000

'

$4,450,277,000

'

$4,500,177,000

'

'

'

'

'

'

'

'

'

[1]

The construction loan on the property allows for borrowings of up to $140,000, bears interest at LIBOR plus 2.50% and matures on March 5, 2017, including extension options. At June 30, 2014 and December 31, 2013, the total interest rate was 2.95% and 2.96%, respectively.

[2]

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

[3]

The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At June 30, 2014 and December 31, 2013, the total interest rate was 3.03% and 3.04%, respectively.

[4]

On February 7, 2014, the Company paid off in full one of the two loans on the property, which resulted in a loss of $358 on the early extinguishment of debt.

[5]

The loan bears interest at LIBOR plus 2.25% and matures on November 6, 2014. At June 30, 2014 and December 31, 2013, the total interest rate was 2.71% and 2.73%, respectively.

Bank_and_Other_Notes_Payable_D

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

6 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

Jun. 30, 2014

Dec. 31, 2013

Aug. 06, 2013

Jun. 30, 2014

Aug. 06, 2013

Jun. 30, 2014

Dec. 08, 2011

Jun. 30, 2014

Dec. 31, 2013

Dec. 08, 2011

Dec. 08, 2011

Jun. 30, 2014

Mar. 29, 2013

Jun. 30, 2014

Dec. 31, 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

Unsecured term loan

Convertible Notes Payable

Prasada Note

Prasada Note

Prasada Note

Low end of range

Low end of range

High end of range

High end of range

Low end of range

High end of range

Mortgage loans payable on real estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving line of credit

$1,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate spread over basis (as a percent)

1.40%

'

1.38%

1.75%

2.00%

3.00%

'

1.95%

'

1.95%

3.20%

'

'

'

'

Term of extension (in years)

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

Expansion borrowing capacity

2,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of additional borrowing

'

'

'

'

'

'

125,000,000

125,000,000

'

'

'

'

13,330,000

'

'

Outstanding borrowings under the line of credit

250,000,000

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

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

2.17%

1.85%

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of outstanding line of credit

239,362,000

28,214,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate basis

'LIBOR

'

'LIBOR

'LIBOR

'

'

'LIBOR

'LIBOR

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

2.25%

2.51%

'

'

'

'

'

'

Interest rate on debt (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

5.25%

'

'

Debt, fair value

'

'

'

'

'

'

'

119,688,000

120,802,000

'

'

'

'

12,189,000

13,114,000

Debt, carrying value

'

'

'

'

'

'

'

'

'

'

'

'

'

$11,718,000

$12,537,000

CoVenture_Arrangement_Details

Co-Venture Arrangement: (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2009
In Thousands, unless otherwise specified			Freehold Raceway Mall and Chandler Fashion Center
Co-Venture Arrangement:	'	'	'
Percentage of loan assumed by third party (as a percent)	'	'	49.90%
Co-venture obligation	$76,854	$81,515	$168,154

Noncontrolling_Interests_Detai

Noncontrolling Interests: (Details) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Aug. 17, 2012
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]	'	'	'
Limited partnership interest of the operating partnership (as a percent)	7.00%	7.00%	'
Common stock, par value (in dollars per share)	$0.01	$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	$672,472	$587,917	'
The Macerich Partnership, L.P.	'	'	'
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]	'	'	'
Ownership interest in operating partnership (as a percent)	93.00%	93.00%	'

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Aug. 17, 2012
Stockholders' Equity Note [Abstract]	'	'	'	'
Common stock, par value (in dollars per share)	$0.01	'	$0.01	$0.01
Maximum price of common stock available to be issued	'	'	$149,093,000	$500,000,000
Commission to sales agent (as a percent)	'	'	'	2.00%
Common stock sold (in shares)	2,456,956	2,961,903	'	'
Proceeds from sale	173,011,000	177,896,000	'	'
Shares issued during the period	$171,102,000	$175,649,000	'	'

Acquisitions_Narrative_Details

Acquisitions - Narrative (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

Jan. 31, 2013

Jan. 24, 2013

Dec. 31, 2012

Apr. 25, 2013

Oct. 24, 2013

Oct. 24, 2013

Jun. 04, 2014

Jun. 30, 2014

Jun. 04, 2014

Jun. 03, 2014

Sep. 17, 2013

Sep. 16, 2013

Green Acres Mall

Green Acres Mall

Green Acres Mall

Green Acres Adjacent

Superstition Springs Land I

Superstition Springs Land I

Cascade Mall

Cascade Mall

Cascade Mall

Cascade Mall

Camelback Colonnade

Camelback Colonnade

sqft

acre

sqft

sqft

sqft

Acquisition

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

1,793,000

'

19

'

1,082,000

'

'

593,000

'

619,000

'

Purchase price

'

$500,000,000

'

$22,577,000

$46,162,000

'

'

'

'

'

'

'

Deposits paid

'

'

30,000,000

'

'

'

'

'

'

'

'

'

Purchase price, balance remaining after deposit

'

470,000,000

'

'

'

'

'

'

'

'

'

'

Face amount of debt

'

325,000,000

'

'

'

'

'

'

'

'

'

'

Amount of additional borrowing

225,000,000

100,000,000

'

'

'

'

'

'

'

'

'

'

Ownership percentage

'

'

'

'

'

'

'

'

'

'

'

73.20%

Additional ownership interest acquired (as a percent)

'

'

'

'

'

33.30%

'

'

49.00%

'

67.50%

'

Purchase price funded by cash payment on acquisition

'

'

'

'

23,662,000

'

15,233,000

'

'

'

'

'

Purchase price paid through assumption of debt by the Company

'

'

'

'

22,500,000

'

'

'

'

'

'

'

Ownership interest at completion of acquisition (as a percent)

'

'

'

'

'

100.00%

'

'

'

100.00%

'

100.00%

Incremental revenue

'

'

'

'

'

'

'

617,000

'

'

'

'

Incremental earnings

'

'

'

'

'

'

'

$202,000

'

'

'

'

Acquisitions_Allocation_of_Fai

Acquisitions - Allocation of Fair Value (Details) (USD $)	Jan. 24, 2013	Sep. 17, 2013	Oct. 24, 2013	Jun. 03, 2014
In Thousands, unless otherwise specified	Green Acres Mall	Camelback Colonnade	Superstition Springs Land I	Cascade Mall
Acquisition	'	'	'	'
Cash and cash equivalents	'	$1,280	$8,894	'
Restricted cash	'	1,139	'	'
Tenant receivables	'	615	51	'
Property	477,673	98,160	114,373	28,924
Deferred charges	45,130	8,284	12,353	6,660
Other assets	19,125	380	11,535	202
Total assets acquired	541,928	109,858	147,206	35,786
Accounts payable	'	54	119	'
Mortgage note payable	'	49,465	68,448	'
Other accrued liabilities	41,928	4,752	7,637	4,786
Total liabilities assumed	41,928	54,271	76,204	4,786
Fair value of acquired net assets (at 100% ownership)	$500,000	$55,587	$71,002	$31,000

Acquisitions_Remeasurement_Gai

Acquisitions - Remeasurement Gain (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Sep. 17, 2013	Oct. 24, 2013	Oct. 24, 2013	Sep. 16, 2013
In Thousands, unless otherwise specified			Camelback Colonnade	Superstition Springs Land I	Superstition Springs Land I	Camelback Colonnade
Acquisition	'	'	'	'	'	'
Fair value of existing ownership interest (at % ownership)	'	'	$41,690	$47,340	'	'
Investments in unconsolidated joint ventures	-797,010	-701,483	-5,349	'	-32,476	'
Remeasurement gain	'	'	$36,341	$14,864	'	'
Ownership interest before acquisition (as a percent)	'	'	'	'	66.70%	73.20%

Acquisitions_Reconciliation_of

Acquisitions - Reconciliation of Purchase Price (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Oct. 24, 2013	Oct. 24, 2013	Jun. 04, 2014	Jun. 03, 2014	Sep. 16, 2013
In Thousands, unless otherwise specified			Superstition Springs Land I	Superstition Springs Land I	Cascade Mall	Cascade Mall	Camelback Colonnade
Acquisition	'	'	'	'	'	'	'
Purchase price funded by cash payment on acquisition	'	'	$23,662	'	$15,233	'	'
Purchase price	'	'	46,162	'	'	'	'
Less debt assumed	'	'	-22,500	'	'	'	'
Carrying value of investment	797,010	701,483	'	32,476	'	15,767	'
Remeasurement gain	'	'	14,864	'	'	'	'
Fair value of acquired net assets (at 100% ownership)	'	'	'	$71,002	'	$31,000	'
Ownership interest at completion of acquisition (as a percent)	'	'	'	100.00%	'	100.00%	100.00%

Acquisitions_Acquisition_Pro_F

Acquisitions: Acquisition - Pro Forma Results (Details) (USD $)	3 Months Ended				6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Business Combinations [Abstract]	'		'		'		'
Total revenues	$255,987	[1]	$254,720	[1]	$522,110	[1]	$508,655	[1]
Income (loss) from continuing operations	$18,199	[1]	$92,610	[1]	$37,917	[1]	$113,785	[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, 2013, 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 $)

0 Months Ended

3 Months Ended

6 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Dec. 11, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

31-May-13

Jun. 04, 2013

Dec. 04, 2013

Oct. 23, 2013

Oct. 15, 2013

Sep. 11, 2013

Jun. 04, 2013

Jun. 04, 2013

Sep. 30, 2013

Dec. 11, 2013

Dec. 11, 2013

Dec. 11, 2013

Green Tree Mall

Northridge Mall

Mervyn's

Mervyn's

Mervyn's

Mervyn's

Rimrock Mall

Rimrock Mall and Nortridge Mall

Fiesta Mall

Chesterfield Towne Center

Centre at Salisbury

Chesterfield Towne Center

sqft

sqft

sqft

sqft

sqft

sqft

Discontinued Operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

'

'

'

'

793,000

890,000

'

'

'

'

603,000

'

933,000

1,016,000

862,000

'

Proceeds from sale

$292,500

'

'

'

'

$79,000

'

$10,475

$5,430

$5,700

$12,000

'

$230,000

'

'

'

'

Gain (loss) from sale

'

0

141,906

0

141,912

59,767

'

-5,257

1,695

-2,031

-2,633

'

82,151

'

'

'

151,467

Gain (loss) on extinguishment of debt

'

0

1,943

-358

1,943

'

'

'

'

'

'

'

'

1,252

'

'

'

Cash payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

67,763

'

'

Assumption of deny

'

'

'

'

'

'

'

'

'

'

'

'

'

'

109,737

115,000

'

Revenues from discontinued operations

'

17,022

'

'

36,501

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations

'

$0

$143,398

$0

$145,956

'

'

'

'

'

'

'

'

'

'

'

'

Commitments_and_Contingencies_

Commitments and Contingencies: (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Contingent Liabilities	'	'	'	'	'
Operating lease rent expense	$2,708	$2,666	$5,377	$5,301	'
Contingent liability under letters of credit	18,388	'	18,388	'	18,862
Outstanding obligations under construction agreements	$36,720	'	$36,720	'	'

RelatedParty_Transactions_Deta

Related-Party Transactions: (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
			note		note
Related party transactions	'	'	'	'	'
Interest expense, related party	$3,690	$3,764	$7,398	$7,544	'
Loans to unconsolidated joint ventures	3,396	'	3,396	'	2,756
Due from affiliates	29,192	'	29,192	'	30,132
Related parties note receivable, AWE Talisman Company	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest income, related party	156	156	310	310	'
Number of notes receivable (in notes)	'	'	2	'	2
Note receivable, interest rate (as a percent)	5.00%	'	5.00%	'	'
Debt, carrying value	13,913	'	13,913	'	13,603
Related parties note receivable, RED Consolidated Holdings, LLC	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest income, related party	154	175	314	181	'
Due from affiliates	11,874	'	11,874	'	12,707
Note receivable, interest rate (as a percent)	5.25%	'	5.25%	'	'
Northwestern Mutual Life (NML)	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest expense payable, related party	1,228	'	1,228	'	1,240
Unconsolidated joint ventures	'	'	'	'	'
Related party transactions	'	'	'	'	'
Interest income, related party	78	59	109	120	'
Due from affiliates	3,405	'	3,405	'	3,822
Unconsolidated joint ventures and third-party managed properties	'	'	'	'	'
Related party transactions	'	'	'	'	'
Management Fees	4,890	5,506	9,714	11,000	'
Development and Leasing Fees	2,882	2,779	5,378	4,475	'
Fees charged to unconsolidated joint ventures and third-party managed properties	$7,772	$8,285	$15,092	$15,475	'

Share_and_UnitBased_Plans_Narr

Share and Unit-Based Plans - Narrative (Details) (USD $)

3 Months Ended

6 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Mar. 07, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Stock units

LTIP Units

Stock awards

Stock options

Phantom stock units

Executive Officer

Executive Officer

Executive Officer

Executive Officer

LTIP Units

LTIP Units

LTIP Units

Long Units, Market Indexed

executive_officer

Share and unit-based plans

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion rate of shares

'

'

'

'

1

1

'

'

'

'

'

'

'

Granted (in shares)

'

'

'

'

70,389

589,443

0

'

7,451

246,471

70,042

'

272,930

Number of executives receiving grants (in executive officers)

'

'

'

'

'

'

'

'

'

'

7

'

'

Average grant date fair value (in dollars per share)

'

'

'

'

$60.23

[1]

$53.18

[1]

$0

[1]

'

$61.78

[1]

$60.25

$58.89

'

$45.34

Absolute stockholder return requirement (as a percent)

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

Look-back period (in years)

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

Capitalized share and unit-based compensation costs

$519

$650

$4,361

$2,088

'

'

'

'

'

'

'

'

'

Unrecognized compensation cost of share and unit-based plans

'

'

'

'

$4,173

$9,682

$416

$51

$896

'

'

'

'

[1]

Value represents the weighted average grant date fair value.

Share_and_UnitBased_Plans_Comp

Share and Unit-Based Plans - Compensation Cost (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share and unit-based plans	'	'	'	'
Compensation cost under share and unit-based plans	$4,854	$5,731	$25,200	$10,868
LTIP Units	'	'	'	'
Share and unit-based plans	'	'	'	'
Compensation cost under share and unit-based plans	3,428	4,692	21,668	7,650
Stock awards	'	'	'	'
Share and unit-based plans	'	'	'	'
Compensation cost under share and unit-based plans	83	122	197	232
Stock units	'	'	'	'
Share and unit-based plans	'	'	'	'
Compensation cost under share and unit-based plans	1,039	667	2,721	2,491
Stock options	'	'	'	'
Share and unit-based plans	'	'	'	'
Compensation cost under share and unit-based plans	4	4	8	8
Phantom stock units	'	'	'	'
Share and unit-based plans	'	'	'	'
Compensation cost under share and unit-based plans	$300	$246	$606	$487

Share_and_UnitBased_Plans_Nonv

Share and Unit-Based Plans - Nonvested Equity Awards (Details) (USD $)	6 Months Ended
	Jun. 30, 2014
LTIP Units	'
Units (in shares)	'
Balance at beginning of period	0
Granted	589,443
Vested	-246,471
Forfeited	0
Balance at end of period	342,972
Value (in dollars per share)	'
Balance at beginning of period	$0	[1]
Granted	$53.18	[1]
Vested	$60.25	[1]
Forfeited	$0	[1]
Balance at end of period	$48.11	[1]
Stock awards	'
Units (in shares)	'
Balance at beginning of period	19,001
Granted	0
Vested	-9,812
Forfeited	0
Balance at end of period	9,189
Value (in dollars per share)	'
Balance at beginning of period	$56.77	[1]
Granted	$0	[1]
Vested	$54.45	[1]
Forfeited	$0	[1]
Balance at end of period	$59.25	[1]
Phantom stock units	'
Units (in shares)	'
Balance at beginning of period	17,575
Granted	7,451
Vested	-9,771
Forfeited	0
Balance at end of period	15,255
Value (in dollars per share)	'
Balance at beginning of period	$58.66	[1]
Granted	$61.78	[1]
Vested	$60.91	[1]
Forfeited	$0	[1]
Balance at end of period	$58.74	[1]
Stock units	'
Units (in shares)	'
Balance at beginning of period	137,318
Granted	70,389
Vested	-68,035
Forfeited	0
Balance at end of period	139,672
Value (in dollars per share)	'
Balance at beginning of period	$57.24	[1]
Granted	$60.23	[1]
Vested	$55.08	[1]
Forfeited	$0	[1]
Balance at end of period	$59.80	[1]
[1]	Value represents the weighted average grant date fair value.

Share_and_UnitBased_Plans_SARs

Share and Unit-Based Plans - SARs (Details) (USD $)	6 Months Ended
	Jun. 30, 2014
SARs	'
SARs (in shares)	'
Balance at beginning of period	1,070,991
Granted	0
Exercised	-5,000
Forfeited	0
Balance at end of period	1,065,991
Value (in dollars per share)	'
Balance at beginning of period	$56.66	[1]
Granted	$0	[1]
Exercised	$56.63	[1]
Forfeited	$0	[1]
Balance at end of period	$56.66	[1]
Stock options	'
Stock Options (in shares)	'
Balance at beginning of period	10,068
Granted	0
Exercised	0
Forfeited	0
Balance at end of period	10,068
Value (in dollars per share)	'
Balance at beginning of period	$59.57	[1]
Granted	$0	[1]
Exercised	$0	[1]
Forfeited	$0	[1]
Balance at end of period	$59.57	[1]
[1]	Value represents the weighted average exercise price.

Income_Taxes_Details

Income Taxes: (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Income tax benefit	'	'	'	'	'
Current	$0	$125	$0	($156)	'
Deferred	2,898	1,352	3,070	1,877	'
Income tax benefit	2,898	1,477	3,070	1,721	'
Components of net deferred tax assets	'	'	'	'	'
Net deferred tax assets	$34,426	'	$34,426	'	$31,356

Subsequent_Events_Details

Subsequent Events: (Details) (Subsequent event, USD $)	Sep. 06, 2014	Jul. 30, 2014	Jul. 30, 2014
In Thousands, except Per Share data, unless otherwise specified		The Gallery	The Gallery
			sqft
Subsequent events	'	'	'
Dividend/distribution for common stockholders and OP Unit holders (in dollars per share)	$0.62	'	'
Property area (in square feet)	'	'	1,400,000
Ownership percentage acquired	'	50.00%	'
Purchase price	'	$106,800	'