The Macerich Company (MAC) 10-Q 5 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	2-May-14
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'MACERICH CO	'
Entity Central Index Key	'0000912242	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-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	'	140,692,507
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS:	'		'
Property, net	$7,553,979		$7,621,766
Cash and cash equivalents	64,926		69,715
Restricted cash	15,808		16,843
Tenant and other receivables, net	100,838		99,497
Deferred charges and other assets, net	516,277		533,058
Loans to unconsolidated joint ventures	3,374		2,756
Due from affiliates	28,559		30,132
Investments in unconsolidated joint ventures	724,630		701,483
Total assets	9,008,391		9,075,250
Mortgage notes payable:	'		'
Related parties	268,029	[1]	269,381	[1]
Others	4,115,971	[1]	4,145,809	[1]
Total	4,384,000		4,415,190
Bank and other notes payable	227,132		167,537
Accounts payable and accrued expenses	89,146		76,941
Other accrued liabilities	312,188		363,158
Distributions in excess of investments in unconsolidated joint ventures	254,581		252,192
Co-venture obligation	78,224		81,515
Total liabilities	5,345,271		5,356,533
Commitments and contingencies	'		'
Stockholders' equity:	'		'
Common stock, $0.01 par value, 250,000,000 shares authorized, 140,879,384 and 140,733,683 shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively	1,409		1,407
Additional paid-in capital	3,920,704		3,906,148
Accumulated deficit	-618,277		-548,806
Total stockholders' equity	3,303,836		3,358,749
Noncontrolling interests	359,284		359,968
Total equity	3,663,120		3,718,717
Total liabilities and equity	$9,008,391		$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 CollateralMarch 31, 2014 December 31, 2013Arrowhead Towne Center$13,874 $14,642Camelback Colonnade1,824 2,120Deptford Mall(13) (14)Fashion Outlets of Niagara Falls USA6,110 6,342Superstition Springs Center816 895Valley Mall(197) (219) $22,414 $23,766

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 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)	140,879,384	140,733,683
Common stock, shares outstanding (in shares)	140,879,384	140,733,683

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenues:	'	'
Minimum rents	$151,633	$137,027
Percentage rents	2,853	3,982
Tenant recoveries	91,475	78,961
Management Companies	8,121	10,148
Other	10,430	13,186
Total revenues	264,512	243,304
Expenses:	'	'
Shopping center and operating expenses	90,376	78,604
Management Companies' operating expenses	22,772	23,149
REIT general and administrative expenses	6,877	6,024
Depreciation and amortization	88,657	87,018
Total expenses before interest	208,682	194,795
Interest expense:	'	'
Related parties	3,708	3,780
Other	42,630	45,900
Total interest expense	46,338	49,680
Loss on extinguishment of debt, net	358	0
Total expenses	255,378	244,475
Equity in income of unconsolidated joint ventures	13,769	18,115
Co-venture expense	-1,820	-2,041
Income tax benefit	172	243
(Loss) gain on remeasurement, sale or write down of assets, net	-1,611	4,828
Income from continuing operations	19,644	19,974
Discontinued operations:	'	'
Gain on the disposition of assets, net	0	6
Income from discontinued operations	0	2,550
Total income from discontinued operations	0	2,556
Net income	19,644	22,530
Less net income attributable to noncontrolling interests	1,825	4,438
Net income attributable to the Company	$17,819	$18,092
Earnings per common share attributable to Company—basic: (in dollars per share)	'	'
Income from continuing operations	$0.13	$0.11
Discontinued operations	$0	$0.02
Net income attributable to common stockholders	$0.13	$0.13
Earnings per common share attributable to Company—diluted: (in dollars per share)	'	'
Income from continuing operations	$0.13	$0.11
Discontinued operations	$0	$0.02
Net income attributable to common stockholders	$0.13	$0.13
Weighted average number of common shares outstanding: (in shares)	'	'
Basic	140,767	137,538
Diluted	140,817	137,616

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	19,644	17,819	'	'	17,819	1,825
Amortization of share and unit-based compensation plans (in shares)	'	'	82,701	'	'	'
Amortization of share and unit-based compensation plans	20,346	20,346	1	20,345	'	'
Distributions paid ($0.62) per share	-87,290	-87,290	'	'	-87,290	'
Distributions to noncontrolling interests	-8,052	'	'	'	'	-8,052
Other	-42	-42	'	-42	'	'
Conversion of noncontrolling interests to common shares (in shares)	'	'	63,000	'	'	'
Conversion of noncontrolling interests to common shares	'	627	1	626	'	-627
Redemption of noncontrolling interests	-203	-134	'	-134	'	-69
Adjustment of noncontrolling interest in Operating Partnership	'	-6,239	'	-6,239	'	6,239
Balance at Mar. 31, 2014	$3,663,120	$3,303,836	$1,409	$3,920,704	($618,277)	$359,284
Balance (in shares) at Mar. 31, 2014	140,879,384	'	140,879,384	'	'	'

CONSOLIDATED_STATEMENT_OF_EQUI1

CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]	'
Distributions paid, per share (in dollars per share)	$0.62

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$19,644	$22,530
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Loss on extinguishment of debt	358	0
Loss (gain) on remeasurement, sale or write down of assets, net	1,611	-4,828
Gain on the disposition of assets, net from discontinued operations	0	-6
Depreciation and amortization	90,569	95,465
Amortization of net premium on mortgage notes payable	-1,352	-2,441
Amortization of share and unit-based plans	16,505	3,700
Straight-line rent adjustment	-1,491	-1,561
Amortization of above and below-market leases	-1,497	-1,624
Provision for doubtful accounts	372	756
Income tax benefit	-172	-243
Equity in income of unconsolidated joint ventures	-13,769	-18,115
Distributions of income from unconsolidated joint ventures	0	8,538
Co-venture expense	1,820	2,041
Changes in assets and liabilities, net of acquisitions and dispositions:	'	'
Tenant and other receivables	8,817	4,782
Other assets	-1,536	9,092
Due from affiliates	1,573	-799
Accounts payable and accrued expenses	8,049	15,073
Other accrued liabilities	-31,590	-24,817
Net cash provided by operating activities	97,911	107,543
Cash flows from investing activities:	'	'
Acquisitions of property	0	-470,000
Development, redevelopment, expansion and renovation of properties	-29,578	-36,741
Property improvements	-4,792	-10,901
Issuance of notes receivable	0	-13,330
Proceeds from maturities of marketable securities	0	99
Deferred leasing costs	-6,465	-10,885
Distributions from unconsolidated joint ventures	43,495	104,708
Contributions to unconsolidated joint ventures	-49,842	-26,134
Collection of/loans to unconsolidated joint ventures, net	-618	-21
Proceeds from sale of assets	24,514	6,059
Restricted cash	1,035	530
Net cash used in investing activities	-22,251	-456,616
Cash flows from financing activities:	'	'
Proceeds from mortgages, bank and other notes payable	133,982	1,735,123
Payments on mortgages, bank and other notes payable	-104,225	-1,286,303
Deferred financing costs	-550	-4,601
Redemption of noncontrolling interests	-203	-1,022
Payments of Contingent Consideration	-9,000	0
Dividends and distributions	-95,342	-86,207
Distributions to co-venture partner	-5,111	-4,896
Net cash (used in) provided by financing activities	-80,449	352,094
Net (decrease) increase in cash and cash equivalents	-4,789	3,021
Cash and cash equivalents, beginning of period	69,715	65,793
Cash and cash equivalents, end of period	64,926	68,814
Supplemental cash flow information:	'	'
Cash payments for interest, net of amounts capitalized	47,958	53,993
Non-cash transactions:	'	'
Accrued development costs included in accounts payable and accrued expenses and other accrued liabilities	37,852	25,761
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	$627	$974

Organization

Organization:	3 Months Ended
	Mar. 31, 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 March 31, 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:	3 Months Ended
	Mar. 31, 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 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"):	3 Months Ended
	Mar. 31, 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 months ended March 31, 2014 and 2013 (shares in thousands):
			For the Three Months Ended March 31,
			2014			2013
	Numerator
	Income from continuing operations		$	19,644		$	19,974
	Income from discontinued operations		—			2,556
	Net income attributable to noncontrolling interests		(1,825		)	(4,438		)
	Net income attributable to the Company		17,819			18,092
	Allocation of earnings to participating securities		(128		)	(66		)
	Numerator for basic and diluted earnings per share—net income attributable to common stockholders		$	17,691		$	18,026
	Denominator
	Denominator for basic earnings per share—weighted average number of common shares outstanding		140,767			137,538
	Effect of dilutive securities:(1)
	Share and unit-based compensation plans		50			78
	Denominator for diluted earnings per share—weighted average number of common shares outstanding		140,817			137,616
	Earnings per common share—basic:
	Income from continuing operations		$	0.13		$	0.11
	Discontinued operations		—			0.02
	Net income attributable to common stockholders		$	0.13		$	0.13
	Earnings per common share—diluted:
	Income from continuing operations		$	0.13		$	0.11
	Discontinued operations		—			0.02
	Net income attributable to common stockholders		$	0.13		$	0.13
	-1	Diluted EPS excludes 184,304 convertible preferred units for the three months ended March 31, 2014 and 2013 as their impact was antidilutive.
	Diluted EPS excludes 10,068 of unexercised stock options for the three months ended March 31, 2014 as their impact was antidilutive.
	Diluted EPS excludes 9,991,438 and 10,206,924 Operating Partnership Units ("OP Units") for the three months ended March 31, 2014 and 2013, respectively, as their impact was antidilutive.

Investments_in_Unconsolidated_

Investments in Unconsolidated Joint Ventures:	3 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Investments in Unconsolidated Joint Ventures:	'
	Investments in Unconsolidated Joint Ventures:
	During 2013, the Company made the following 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).
	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:
		March 31,			December 31,
		2014			2013
	Assets(1):
	Properties, net	$	3,480,942		$	3,435,737
	Other assets	281,207			295,719
	Total assets	$	3,762,149		$	3,731,456
	Liabilities and partners' capital(1):
	Mortgage notes payable(2)	$	3,506,953		$	3,518,215
	Other liabilities	200,166			202,444
	Company's deficit	(3,799		)	(25,367		)
	Outside partners' capital	58,829			36,164
	Total liabilities and partners' capital	$	3,762,149		$	3,731,456
	Investments in unconsolidated joint ventures:
	Company's deficit	$	(3,799	)	$	(25,367	)
	Basis adjustment(3)	473,848			474,658
		$	470,049		$	449,291
	Assets—Investments in unconsolidated joint ventures	$	724,630		$	701,483
	Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(254,581		)	(252,192		)
		$	470,049		$	449,291
	-1	These amounts include the assets and liabilities of the following joint ventures as of March 31, 2014 and December 31, 2013:
		Pacific			Tysons
		Premier			Corner LLC
		Retail LP
	As of March 31, 2014:
	Total Assets	$	763,917		$	359,088
	Total Liabilities	$	809,622		$	879,938
	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 March 31, 2014 and December 31, 2013, a total of $33,540 could become recourse debt to the Company. As of March 31, 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 $709,538 and $712,455 as of March 31, 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 $9,724 and $6,943 for the three months ended March 31, 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 $1,424 and $2,562 for the three months ended March 31, 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 March 31, 2014
	Revenues:
	Minimum rents	$	26,080		$	16,278		$	55,899		$	98,257
	Percentage rents	659			424			968			2,051
	Tenant recoveries	11,740			11,894			25,111			48,745
	Other	1,077			687			7,855			9,619
	Total revenues	39,556			29,283			89,833			158,672
	Expenses:
	Shopping center and operating expenses	11,131			10,159			33,880			55,170
	Interest expense	10,098			7,830			19,571			37,499
	Depreciation and amortization	8,798			4,602			21,523			34,923
	Total operating expenses	30,027			22,591			74,974			127,592
	Loss on remeasurement, sale or write down of assets, net	(86		)	—			(18		)	(104		)
	Net income	$	9,443		$	6,692		$	14,841		$	30,976
	Company's equity in net income	$	4,268		$	1,758		$	7,743		$	13,769
	Three Months Ended March 31, 2013
	Revenues:
Minimum rents	$	33,132		$	15,497		$	60,961		$	109,590
Percentage rents	989			566			1,302			2,857
Tenant recoveries	13,954			11,024			27,212			52,190
Other	1,251			918			7,413			9,582
Total revenues	49,326			28,005			96,888			174,219
Expenses:
Shopping center and operating expenses	14,448			8,482			36,171			59,101
Interest expense	11,574			2,240			24,117			37,931
Depreciation and amortization	10,910			4,430			21,821			37,161
Total operating expenses	36,932			15,152			82,109			134,193
Loss on remeasurement, sale or write down of assets, net	—			—			(190		)	(190		)
Net income	$	12,394		$	12,853		$	14,589		$	39,836
Company's equity in net income	$	5,691		$	4,877		$	7,547		$	18,115
Significant accounting policies used by the unconsolidated joint ventures are similar to those used by the Company.

Property

Property:	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property:	'
	Property:
	Property consists of the following:
		March 31,			December 31,
		2014			2013
	Land	$	1,697,973		$	1,707,005
	Buildings and improvements	6,499,863			6,555,212
	Tenant improvements	533,650			537,754
	Equipment and furnishings	153,177			152,198
	Construction in progress	253,113			229,169
		9,137,776			9,181,338
	Less accumulated depreciation	(1,583,797		)	(1,559,572		)
		$	7,553,979		$	7,621,766
	Depreciation expense was $68,478 and $65,896 for the three months ended March 31, 2014 and 2013, respectively.
	The loss on remeasurement, sale or write down of assets, net, of $1,611 for the three months ended March 31, 2014 is due to the loss 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 gain on the remeasurement, sale or write down of assets, net, of $4,828 for the three months ended March 31, 2013 consists of the gain on the sales of land of $5,419 offset in part by the loss on the write off of development costs of $591.

Tenant_and_Other_Receivables_n

Tenant and Other Receivables, net:	3 Months Ended
	Mar. 31, 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 $2,941 and $2,878 at March 31, 2014 and December 31, 2013, respectively. Also included in tenant and other receivables, net, are accrued percentage rents of $2,723 and $9,824 at March 31, 2014 and December 31, 2013, respectively, and a deferred rent receivable due to straight-line rent adjustments of $54,303 and $53,380 at March 31, 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 notes are collateralized by a trust deed on Lake Square Mall.

Deferred_Charges_and_Other_Ass

Deferred Charges and Other Assets, net:	3 Months Ended
	Mar. 31, 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:
		March 31,			December 31,
		2014			2013
	Leasing	$	213,741		$	223,038
	Financing	50,427			51,695
	Intangible assets:
	In-place lease values	188,083			205,651
	Leasing commissions and legal costs	47,504			50,594
	Above-market leases	115,035			118,770
	Deferred tax assets	31,528			31,356
	Deferred compensation plan assets	31,148			30,932
	Other assets	67,206			65,793
		744,672			777,829
	Less accumulated amortization(1)	(228,395		)	(244,771		)
		$	516,277		$	533,058
	-1	Accumulated amortization includes $81,496 and $89,141 relating to in-place lease values, leasing commissions and legal costs at March 31, 2014 and December 31, 2013, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $12,739 and $13,665 for the three months ended March 31, 2014 and 2013, respectively.
	The allocated values of above-market leases and below-market leases consist of the following:
		March 31,			December 31,
		2014			2013
	Above-Market Leases
	Original allocated value	$	115,035		$	118,770
	Less accumulated amortization	(48,461		)	(46,912		)
		$	66,574		$	71,858
	Below-Market Leases(1)
	Original allocated value	$	182,005		$	187,537
	Less accumulated amortization	(80,583		)	(79,271		)
		$	101,422		$	108,266
	-1	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable

Mortgage Notes Payable:	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Mortgage Notes Payable:	'
	Mortgage Notes Payable:
	Mortgage notes payable at March 31, 2014 and December 31, 2013 consist of the following:
			Carrying Amount of Mortgage Notes(1)
			March 31, 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		$	—		$	234,214	$	—	$	236,028	2.76	%	$	1,131	2018
	Camelback Colonnade		—			48,824		—		49,120		2.16	%	178		2015
	Chandler Fashion Center(5)		—			200,000		—		200,000		3.77	%	625		2019
	Danbury Fair Mall		116,421			116,421		117,120		117,120		5.53	%	1,538		2020
	Deptford Mall		—			200,658		—		201,622		3.76	%	947		2023
	Deptford Mall		—			14,482		—		14,551		6.46	%	101		2016
	Eastland Mall		—			168,000		—		168,000		5.79	%	811		2016
	Fashion Outlets of Chicago(6)		—			105,367		—		91,383		2.95	%	233		2017
	Fashion Outlets of Niagara Falls USA		—			123,352		—		124,030		4.89	%	727		2020
	Flagstaff Mall		—			37,000		—		37,000		5.03	%	151		2015
	FlatIron Crossing		—			266,397		—		268,000		3.9	%	1,393		2021
	Freehold Raceway Mall(5)		—			232,245		—		232,900		4.2	%	805		2018
	Fresno Fashion Fair		79,075			79,075		79,391		79,390		6.76	%	1,104		2015
	Great Northern Mall(7)		—			35,235		—		35,484		6.54	%	234		2015
	Green Acres Mall		—			318,249		—		319,850		3.61	%	1,447		2021
	Kings Plaza Shopping Center		—			488,075		—		490,548		3.67	%	2,229		2019
	Northgate Mall(8)		—			64,000		—		64,000		3.03	%	128		2017
	Oaks, The		—			213,244		—		214,239		4.14	%	1,064		2022
	Pacific View		—			135,186		—		135,835		4.08	%	668		2022
	Santa Monica Place		—			234,160		—		235,445		2.99	%	1,004		2018
	SanTan Village Regional Center		—			135,917		—		136,629		3.14	%	589		2019
	South Plains Mall(9)		—			72,449		—		99,833		4.78	%	383		2015
	Superstition Springs Center		—			68,316		—		68,395		1.98	%	138		2016
	Towne Mall		—			22,897		—		22,996		4.48	%	117		2022
	Tucson La Encantada		72,533			—		72,870		—		4.23	%	368		2022
	Valley Mall		—			41,955		—		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		2.72	%	180		2014
	Vintage Faire Mall		—			98,729		—		99,083		5.81	%	586		2015
	Westside Pavilion		—			151,524		—		152,173		4.49	%	783		2022
			$	268,029		$	4,115,971	$	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	March 31,			December 31,
		2014			2013
	Arrowhead Towne Center	$	13,874		$	14,642
	Camelback Colonnade	1,824			2,120
	Deptford Mall	(13		)	(14		)
	Fashion Outlets of Niagara Falls USA	6,110			6,342
	Superstition Springs Center	816			895
	Valley Mall	(197		)	(219		)
		$	22,414		$	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 March 31, 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 March 31, 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 March 31, 2014 and December 31, 2013, the total interest rate was 2.72% 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 March 31, 2014 and December 31, 2013, a total of $84,183 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 $2,485 and $2,468 during the three months ended March 31, 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 March 31, 2014 and December 31, 2013 was $4,462,272 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:	3 Months Ended
	Mar. 31, 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 1.375% to 2.0%, depending on the Company's overall leverage levels, and matures on August 6, 2018. Based on the Company's leverage level as of March 31, 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 March 31, 2014 and December 31, 2013, borrowings under the line of credit were $90,000 and $30,000, respectively, at an average interest rate of 1.83% and 1.85%, respectively. The estimated fair value (Level 2 measurement) of the line of credit at March 31, 2014 and December 31, 2013 was $84,718 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 March 31, 2014, the borrowing rate was LIBOR plus 1.95%. As of March 31, 2014 and December 31, 2013, the total interest rate was 2.50% and 2.51%, respectively. The estimated fair value (Level 2 measurement) of the term loan at March 31, 2014 and December 31, 2013 was $120,760 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 March 31, 2014 and December 31, 2013, the note had a balance of $12,132 and $12,537, respectively. The estimated fair value (Level 2 measurement) of the note at March 31, 2014 and December 31, 2013 was $12,613 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 March 31, 2014 and December 31, 2013, the Company was in compliance with all applicable financial loan covenants.

CoVenture_Arrangement

Co-Venture Arrangement:	3 Months Ended
	Mar. 31, 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 $78,224 and $81,515 at March 31, 2014 and December 31, 2013, respectively.

Noncontrolling_Interests

Noncontrolling Interests:	3 Months Ended
	Mar. 31, 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 March 31, 2014 and December 31, 2013. The remaining 7% limited partnership interest as of March 31, 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 March 31, 2014 and December 31, 2013, the aggregate redemption value of the then-outstanding OP Units not owned by the Company was $614,656 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:	3 Months Ended
	Mar. 31, 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.
	As of March 31, 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:	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Acquisitions:	'
		Acquisitions:
	Green Acres Mall:
	On January 24, 2013, the Company acquired Green Acres Mall, a 1,790,000 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.
	Pro Forma Results of Operations:
	The following unaudited pro forma financial information for the three months ended March 31, 2013 assumes all of the above transactions took place on January 1, 2013:
		Total			Income (loss) from
revenues (1)			continuing operations (1)
Supplemental pro forma information for the three months ended March 31, 2013	$	253,552		$	19,152
-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:	3 Months Ended
	Mar. 31, 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 (loss) gain 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 months ended March 31, 2013.
	Revenues and total income from discontinued operations were $19,478 and $2,556, respectively, for the three months ended March 31, 2013.

Commitments_and_Contingencies

Commitments and Contingencies:	3 Months Ended
	Mar. 31, 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 $2,668 and $2,635 for the three months ended March 31, 2014 and 2013, respectively. No contingent rent was incurred during the three months ended March 31, 2014 or 2013.
	As of March 31, 2014 and December 31, 2013, the Company was contingently liable for $16,388 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 March 31, 2014, the Company had $54,803 in outstanding obligations which it believes will be settled in the next twelve months.

RelatedParty_Transactions

Related-Party Transactions:	3 Months Ended
	Mar. 31, 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 March 31,
		2014		2013
	Management Fees	$	4,825	$	5,493
	Development and Leasing Fees	2,496		1,695
		$	7,321	$	7,188
	Certain mortgage notes on the properties are held by NML (See Note 8—Mortgage Notes Payable). Interest expense in connection with these notes was $3,708 and $3,780 for the three months ended March 31, 2014 and 2013, respectively. Included in accounts payable and accrued expenses is interest payable on these notes of $1,234 and $1,240 at March 31, 2014 and December 31, 2013, respectively.
	As of March 31, 2014 and December 31, 2013, the Company had loans to unconsolidated joint ventures of $3,374 and $2,756, respectively. Interest income associated with these notes was $31 and $61 for the three months ended March 31, 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 $2,507 and $3,822 of unreimbursed costs and fees due from unconsolidated joint ventures under management agreements at March 31, 2014 and December 31, 2013, respectively.
	Due from affiliates at March 31, 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 $13,758 and $13,603 at March 31, 2014 and December 31, 2013, respectively. The combined interest income earned on these notes was $154 and $154 for the three months ended March 31, 2014 and 2013, respectively.
	In addition, due from affiliates at March 31, 2014 and December 31, 2013 includes a note receivable of $12,294 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 $160 and $6 for the three months ended March 31, 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:	3 Months Ended
	Mar. 31, 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 March 31,
			2014				2013
	LTIP Units		$	18,240			$	2,957
	Stock awards		114				110
	Stock units		1,682				1,824
	Stock options		4				4
	Phantom stock units		306				242
			$	20,346			$	5,137
	The Company capitalized share and unit-based compensation costs of $3,841 and $1,437 for the three months ended March 31, 2014 and 2013, respectively. Unrecognized compensation costs of share and unit-based plans at March 31, 2014 consisted of $13,109 from LTIP Units, $499 from stock awards, $5,526 from stock units, $55 from stock options and $1,058 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				—		—		5,409		59.61		70,271		60.22
	Vested	(246,471	)		60.25				(9,812	)	54.45		(4,978	)	59.37		(67,917	)	55.06
	Forfeited	—			—				—		—		—		—		—		—
	Balance at March 31, 2014	342,972			$	48.11			9,189		$	59.25	18,006		$	58.75	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	—			—				—		—
	Forfeited	—			—				—		—
	Balance at March 31, 2014	1,070,991			$	56.66			10,068		$	59.57
	-1	Value represents the weighted average exercise price.

Income_Taxes

Income Taxes:	3 Months Ended
	Mar. 31, 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 March 31,
		2014		2013
	Current	$	—	$	(281	)
	Deferred	172		524
	Income tax benefit	$	172	$	243
	The net operating loss carryforwards are currently scheduled to expire through 2033, beginning in 2021. Net deferred tax assets of $31,528 and $31,356 were included in deferred charges and other assets, net, at March 31, 2014 and December 31, 2013, respectively.
	The tax years 2009 through 2012 remain open to examination by the taxing jurisdictions to which the Company is subject. The Company does not expect that the total amount of unrecognized tax benefit will materially change within the next twelve months.

Subsequent_Events

Subsequent Events:	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events:	'
	Subsequent Events:
	On April 25, 2014, the Company announced a dividend/distribution of $0.62 per share for common stockholders and OP Unit holders of record on May 9, 2014. All dividends/distributions will be paid 100% in cash on June 6, 2014.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies: (Policies)	3 Months Ended
	Mar. 31, 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:
	On April 10, 2014, the Financial Accounting Standards Board issued 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)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2014 and 2013 (shares in thousands):
			For the Three Months Ended March 31,
			2014			2013
	Numerator
	Income from continuing operations		$	19,644		$	19,974
	Income from discontinued operations		—			2,556
	Net income attributable to noncontrolling interests		(1,825		)	(4,438		)
	Net income attributable to the Company		17,819			18,092
	Allocation of earnings to participating securities		(128		)	(66		)
	Numerator for basic and diluted earnings per share—net income attributable to common stockholders		$	17,691		$	18,026
	Denominator
	Denominator for basic earnings per share—weighted average number of common shares outstanding		140,767			137,538
	Effect of dilutive securities:(1)
	Share and unit-based compensation plans		50			78
	Denominator for diluted earnings per share—weighted average number of common shares outstanding		140,817			137,616
	Earnings per common share—basic:
	Income from continuing operations		$	0.13		$	0.11
	Discontinued operations		—			0.02
	Net income attributable to common stockholders		$	0.13		$	0.13
	Earnings per common share—diluted:
	Income from continuing operations		$	0.13		$	0.11
	Discontinued operations		—			0.02
	Net income attributable to common stockholders		$	0.13		$	0.13
	-1	Diluted EPS excludes 184,304 convertible preferred units for the three months ended March 31, 2014 and 2013 as their impact was antidilutive.
	Diluted EPS excludes 10,068 of unexercised stock options for the three months ended March 31, 2014 as their impact was antidilutive.
	Diluted EPS excludes 9,991,438 and 10,206,924 Operating Partnership Units ("OP Units") for the three months ended March 31, 2014 and 2013, respectively, as their impact was antidilutive.

Investments_in_Unconsolidated_1

Investments in Unconsolidated Joint Ventures: (Tables)	3 Months Ended
	Mar. 31, 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:
		March 31,			December 31,
		2014			2013
	Assets(1):
	Properties, net	$	3,480,942		$	3,435,737
	Other assets	281,207			295,719
	Total assets	$	3,762,149		$	3,731,456
	Liabilities and partners' capital(1):
	Mortgage notes payable(2)	$	3,506,953		$	3,518,215
	Other liabilities	200,166			202,444
	Company's deficit	(3,799		)	(25,367		)
	Outside partners' capital	58,829			36,164
	Total liabilities and partners' capital	$	3,762,149		$	3,731,456
	Investments in unconsolidated joint ventures:
	Company's deficit	$	(3,799	)	$	(25,367	)
	Basis adjustment(3)	473,848			474,658
		$	470,049		$	449,291
	Assets—Investments in unconsolidated joint ventures	$	724,630		$	701,483
	Liabilities—Distributions in excess of investments in unconsolidated joint ventures	(254,581		)	(252,192		)
		$	470,049		$	449,291
	-1	These amounts include the assets and liabilities of the following joint ventures as of March 31, 2014 and December 31, 2013:
		Pacific			Tysons
		Premier			Corner LLC
		Retail LP
	As of March 31, 2014:
	Total Assets	$	763,917		$	359,088
	Total Liabilities	$	809,622		$	879,938
	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 March 31, 2014 and December 31, 2013, a total of $33,540 could become recourse debt to the Company. As of March 31, 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 $709,538 and $712,455 as of March 31, 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 $9,724 and $6,943 for the three months ended March 31, 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 $1,424 and $2,562 for the three months ended March 31, 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 March 31, 2014
	Revenues:
	Minimum rents	$	26,080		$	16,278		$	55,899		$	98,257
	Percentage rents	659			424			968			2,051
	Tenant recoveries	11,740			11,894			25,111			48,745
	Other	1,077			687			7,855			9,619
	Total revenues	39,556			29,283			89,833			158,672
	Expenses:
	Shopping center and operating expenses	11,131			10,159			33,880			55,170
	Interest expense	10,098			7,830			19,571			37,499
	Depreciation and amortization	8,798			4,602			21,523			34,923
	Total operating expenses	30,027			22,591			74,974			127,592
	Loss on remeasurement, sale or write down of assets, net	(86		)	—			(18		)	(104		)
	Net income	$	9,443		$	6,692		$	14,841		$	30,976
	Company's equity in net income	$	4,268		$	1,758		$	7,743		$	13,769
	Three Months Ended March 31, 2013
	Revenues:
	Minimum rents	$	33,132		$	15,497		$	60,961		$	109,590
	Percentage rents	989			566			1,302			2,857
	Tenant recoveries	13,954			11,024			27,212			52,190
	Other	1,251			918			7,413			9,582
	Total revenues	49,326			28,005			96,888			174,219
	Expenses:
	Shopping center and operating expenses	14,448			8,482			36,171			59,101
	Interest expense	11,574			2,240			24,117			37,931
	Depreciation and amortization	10,910			4,430			21,821			37,161
	Total operating expenses	36,932			15,152			82,109			134,193
	Loss on remeasurement, sale or write down of assets, net	—			—			(190		)	(190		)
	Net income	$	12,394		$	12,853		$	14,589		$	39,836
	Company's equity in net income	$	5,691		$	4,877		$	7,547		$	18,115

Property_Tables

Property: (Tables)	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Components of property	'
	Property consists of the following:
		March 31,			December 31,
		2014			2013
	Land	$	1,697,973		$	1,707,005
	Buildings and improvements	6,499,863			6,555,212
	Tenant improvements	533,650			537,754
	Equipment and furnishings	153,177			152,198
	Construction in progress	253,113			229,169
		9,137,776			9,181,338
	Less accumulated depreciation	(1,583,797		)	(1,559,572		)
		$	7,553,979		$	7,621,766

Deferred_Charges_and_Other_Ass1

Deferred Charges and Other Assets, net: (Tables)	3 Months Ended
	Mar. 31, 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:
		March 31,			December 31,
		2014			2013
	Leasing	$	213,741		$	223,038
	Financing	50,427			51,695
	Intangible assets:
	In-place lease values	188,083			205,651
	Leasing commissions and legal costs	47,504			50,594
	Above-market leases	115,035			118,770
	Deferred tax assets	31,528			31,356
	Deferred compensation plan assets	31,148			30,932
	Other assets	67,206			65,793
		744,672			777,829
	Less accumulated amortization(1)	(228,395		)	(244,771		)
		$	516,277		$	533,058
	-1	Accumulated amortization includes $81,496 and $89,141 relating to in-place lease values, leasing commissions and legal costs at March 31, 2014 and December 31, 2013, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $12,739 and $13,665 for the three months ended March 31, 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:
		March 31,			December 31,
		2014			2013
	Above-Market Leases
	Original allocated value	$	115,035		$	118,770
	Less accumulated amortization	(48,461		)	(46,912		)
		$	66,574		$	71,858
	Below-Market Leases(1)
	Original allocated value	$	182,005		$	187,537
	Less accumulated amortization	(80,583		)	(79,271		)
		$	101,422		$	108,266
	-1	Below-market leases are included in other accrued liabilities.

Mortgage_Notes_Payable_Tables

Mortgage Notes Payable: (Tables)	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Mortgage notes payable	'
	Mortgage notes payable at March 31, 2014 and December 31, 2013 consist of the following:
			Carrying Amount of Mortgage Notes(1)
			March 31, 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		$	—		$	234,214	$	—	$	236,028	2.76	%	$	1,131	2018
	Camelback Colonnade		—			48,824		—		49,120		2.16	%	178		2015
	Chandler Fashion Center(5)		—			200,000		—		200,000		3.77	%	625		2019
	Danbury Fair Mall		116,421			116,421		117,120		117,120		5.53	%	1,538		2020
	Deptford Mall		—			200,658		—		201,622		3.76	%	947		2023
	Deptford Mall		—			14,482		—		14,551		6.46	%	101		2016
	Eastland Mall		—			168,000		—		168,000		5.79	%	811		2016
	Fashion Outlets of Chicago(6)		—			105,367		—		91,383		2.95	%	233		2017
	Fashion Outlets of Niagara Falls USA		—			123,352		—		124,030		4.89	%	727		2020
	Flagstaff Mall		—			37,000		—		37,000		5.03	%	151		2015
	FlatIron Crossing		—			266,397		—		268,000		3.9	%	1,393		2021
	Freehold Raceway Mall(5)		—			232,245		—		232,900		4.2	%	805		2018
	Fresno Fashion Fair		79,075			79,075		79,391		79,390		6.76	%	1,104		2015
	Great Northern Mall(7)		—			35,235		—		35,484		6.54	%	234		2015
	Green Acres Mall		—			318,249		—		319,850		3.61	%	1,447		2021
	Kings Plaza Shopping Center		—			488,075		—		490,548		3.67	%	2,229		2019
	Northgate Mall(8)		—			64,000		—		64,000		3.03	%	128		2017
	Oaks, The		—			213,244		—		214,239		4.14	%	1,064		2022
	Pacific View		—			135,186		—		135,835		4.08	%	668		2022
	Santa Monica Place		—			234,160		—		235,445		2.99	%	1,004		2018
	SanTan Village Regional Center		—			135,917		—		136,629		3.14	%	589		2019
	South Plains Mall(9)		—			72,449		—		99,833		4.78	%	383		2015
	Superstition Springs Center		—			68,316		—		68,395		1.98	%	138		2016
	Towne Mall		—			22,897		—		22,996		4.48	%	117		2022
	Tucson La Encantada		72,533			—		72,870		—		4.23	%	368		2022
	Valley Mall		—			41,955		—		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		2.72	%	180		2014
	Vintage Faire Mall		—			98,729		—		99,083		5.81	%	586		2015
	Westside Pavilion		—			151,524		—		152,173		4.49	%	783		2022
			$	268,029		$	4,115,971	$	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	March 31,			December 31,
		2014			2013
	Arrowhead Towne Center	$	13,874		$	14,642
	Camelback Colonnade	1,824			2,120
	Deptford Mall	(13		)	(14		)
	Fashion Outlets of Niagara Falls USA	6,110			6,342
	Superstition Springs Center	816			895
	Valley Mall	(197		)	(219		)
		$	22,414		$	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 March 31, 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 March 31, 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 March 31, 2014 and December 31, 2013, the total interest rate was 2.72% and 2.73%, respectively.
Debt premiums (discounts) on mortgage notes payable	'
	Debt premiums (discounts) consist of the following:
	Property Pledged as Collateral	March 31,			December 31,
		2014			2013
	Arrowhead Towne Center	$	13,874		$	14,642
	Camelback Colonnade	1,824			2,120
	Deptford Mall	(13		)	(14		)
	Fashion Outlets of Niagara Falls USA	6,110			6,342
	Superstition Springs Center	816			895
	Valley Mall	(197		)	(219		)
		$	22,414		$	23,766

Acquisitions_Tables

Acquisitions: (Tables)	3 Months Ended
	Mar. 31, 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 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 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
	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
Schedule of pro forma total revenue and income from continuing operations	'
	The following unaudited pro forma financial information for the three months ended March 31, 2013 assumes all of the above transactions took place on January 1, 2013:
		Total			Income (loss) from
		revenues (1)			continuing operations (1)
	Supplemental pro forma information for the three months ended March 31, 2013	$	253,552		$	19,152
	-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)	3 Months Ended
	Mar. 31, 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 March 31,
		2014		2013
	Management Fees	$	4,825	$	5,493
	Development and Leasing Fees	2,496		1,695
		$	7,321	$	7,188

Share_and_UnitBased_Plans_Tabl

Share and Unit-Based Plans: (Tables)	3 Months Ended
	Mar. 31, 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 March 31,
			2014				2013
	LTIP Units		$	18,240			$	2,957
	Stock awards		114				110
	Stock units		1,682				1,824
	Stock options		4				4
	Phantom stock units		306				242
			$	20,346			$	5,137
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				—		—		5,409		59.61		70,271		60.22
	Vested	(246,471	)		60.25				(9,812	)	54.45		(4,978	)	59.37		(67,917	)	55.06
	Forfeited	—			—				—		—		—		—		—		—
	Balance at March 31, 2014	342,972			$	48.11			9,189		$	59.25	18,006		$	58.75	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	—			—				—		—
	Forfeited	—			—				—		—
	Balance at March 31, 2014	1,070,991			$	56.66			10,068		$	59.57
	-1	Value represents the weighted average exercise price.

Income_Taxes_Tables

Income Taxes: (Tables)	3 Months Ended
	Mar. 31, 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 March 31,
		2014		2013
	Current	$	—	$	(281	)
	Deferred	172		524
	Income tax benefit	$	172	$	243

Organization_Details

Organization: (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 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
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Numerator	'		'
Income from continuing operations	$19,644		$19,974
Income from discontinued operations	0		2,556
Net income attributable to noncontrolling interests	-1,825		-4,438
Net income attributable to the Company	17,819		18,092
Allocation of earnings to participating securities	-128		-66
Numerator for basic earnings per share—net income attributable to common stockholders	17,691		18,026
Numerator for diluted earnings per share-net income (loss) available to common stockholders	$17,691		$18,026
Denominator (in shares)	'		'
Denominator for basic earnings per share—weighted average number of common shares outstanding	140,767		137,538
Effect of dilutive securities:(1)	'		'
Share and unit-based compensation plans	50	[1]	78	[1]
Denominator for diluted earnings per share—weighted average number of common shares outstanding	140,817		137,616
Earnings per common share—basic: (in dollars per share)	'		'
Income from continuing operations	$0.13		$0.11
Discontinued operations	$0		$0.02
Net income attributable to common stockholders	$0.13		$0.13
Earnings per common share—diluted: (in dollars per share)	'		'
Income from continuing operations	$0.13		$0.11
Discontinued operations	$0		$0.02
Net income attributable to common stockholders	$0.13		$0.13
[1]	Diluted EPS excludes 184,304 convertible preferred units for the three months ended March 31, 2014 and 2013 as their impact was antidilutive.Diluted EPS excludes 10,068 of unexercised stock options for the three months ended March 31, 2014 as their impact was antidilutive.Diluted EPS excludes 9,991,438 and 10,206,924 Operating Partnership Units ("OP Units") for the three months ended March 31, 2014 and 2013, respectively, as their impact was antidilutive.

Earnings_per_Share_EPS_Details1

Earnings per Share ("EPS"): (Details 2)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 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
Stock options	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Securities excluded from Diluted EPS (in shares)	10,068	'
Partnership unit	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Securities excluded from Diluted EPS (in shares)	9,991,438	10,206,924

Investments_in_Unconsolidated_2

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

0 Months Ended

3 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Dec. 11, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Sep. 17, 2013

Sep. 16, 2013

Jul. 31, 2013

29-May-13

Jun. 12, 2013

Oct. 24, 2013

Oct. 08, 2013

Pacific Premier Retail LP

Pacific Premier Retail LP

Camelback Colonnade

Camelback Colonnade

Redmond Town Center

Redmond Town Center

Kitsap Mall

Superstition Springs Land I

Ridgmar Mall

sqft

Pacific Premier Retail LP

Pacific Premier Retail LP

Pacific Premier Retail LP

sqft

sqft

sqft

sqft

sqft

Investments in unconsolidated joint ventures:

'

'

'

'

'

'

'

'

'

'

'

'

Property area (in square feet)

'

'

'

'

'

619,000

'

695,000

582,000

846,000

1,082,000

1,273,000

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

'

-104

-190

-86

0

'

'

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%

'

Repayments of long-term debt

'

104,225

1,286,303

'

'

'

'

'

'

'

'

51,657

Distributions to Co-venture Partner

'

5,111

4,896

'

'

'

'

'

'

'

'

9,243

Purchase price

'

'

'

'

'

'

'

'

'

'

46,162

'

Purchase price funded by cash payment on acquisition

'

'

'

'

'

'

'

'

'

'

23,662

'

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 $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Assets(1):	'		'
Properties, net	$3,480,942	[1]	$3,435,737	[1]
Other assets	281,207	[1]	295,719	[1]
Total assets	3,762,149	[1]	3,731,456	[1]
Liabilities and partners' capital(1):	'		'
Mortgage notes payable(2)	3,506,953	[1],[2]	3,518,215	[1],[2]
Other liabilities	200,166	[1]	202,444	[1]
Company's deficit	-3,799	[1]	-25,367	[1]
Outside partners' capital	58,829	[1]	36,164	[1]
Total liabilities and partners' capital	3,762,149	[1]	3,731,456	[1]
Investments in unconsolidated joint ventures:	'		'
Company's deficit	-3,799	[1]	-25,367	[1]
Basis adjustment(3)	473,848	[3]	474,658	[3]
Investments in unconsolidated joint ventures	470,049		449,291
Assets—Investments in unconsolidated joint ventures	724,630		701,483
Liabilities—Distributions in excess of investments in unconsolidated joint ventures	($254,581)		($252,192)
[1]	These amounts include the assets and liabilities of the following joint ventures as of March 31, 2014 and December 31, 2013: PacificPremierRetail LP TysonsCorner LLCAs of March 31, 2014: Total Assets$763,917 $359,088Total Liabilities$809,622 $879,938As 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 March 31, 2014 and December 31, 2013, a total of $33,540 could become recourse debt to the Company. As of March 31, 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 $709,538 and $712,455 as of March 31, 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 $9,724 and $6,943 for the three months ended March 31, 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 $1,424 and $2,562 for the three months ended March 31, 2014 and 2013, respectively.

Investments_in_Unconsolidated_4

Investments in Unconsolidated Joint Ventures - Assets and Liabilities (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Investments in unconsolidated joint ventures:	'		'
Total Assets	$3,762,149	[1]	$3,731,456	[1]
Pacific Premier Retail LP	'		'
Investments in unconsolidated joint ventures:	'		'
Total Assets	763,917		775,012
Total Liabilities	809,622		812,725
Tysons Corner LLC	'		'
Investments in unconsolidated joint ventures:	'		'
Total Assets	359,088		356,871
Total Liabilities	$879,938		$887,413
[1]	These amounts include the assets and liabilities of the following joint ventures as of March 31, 2014 and December 31, 2013: PacificPremierRetail LP TysonsCorner LLCAs of March 31, 2014: Total Assets$763,917 $359,088Total Liabilities$809,622 $879,938As 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
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Investments in unconsolidated joint ventures:	'	'	'
Mortgage notes payable that could become recourse debt to the Company	$33,540	'	$33,540
Indemnity of guaranteed amount	16,770	'	16,770
Amortization of difference between cost of investments and book value of underlying equity	1,424	2,562	'
Northwestern Mutual Life (NML)	'	'	'
Investments in unconsolidated joint ventures:	'	'	'
Mortgage notes payable to affiliate	709,538	'	712,455
Interest expense on borrowings from related party	$9,724	$6,943	'

Investments_in_Unconsolidated_6

Investments in Unconsolidated Joint Ventures - Combined Condensed Statements of Operations of Unconsolidated Joint Ventures (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenues:	'	'
Minimum rents	$98,257	$109,590
Percentage rents	2,051	2,857
Tenant recoveries	48,745	52,190
Other	9,619	9,582
Total revenues	158,672	174,219
Expenses:	'	'
Shopping center and operating expenses	55,170	59,101
Interest expense	37,499	37,931
Depreciation and amortization	34,923	37,161
Total operating expenses	127,592	134,193
Loss on remeasurement, sale or write down of assets, net	-104	-190
Net income	30,976	39,836
Company's equity in net income	13,769	18,115
Pacific Premier Retail LP	'	'
Revenues:	'	'
Minimum rents	26,080	33,132
Percentage rents	659	989
Tenant recoveries	11,740	13,954
Other	1,077	1,251
Total revenues	39,556	49,326
Expenses:	'	'
Shopping center and operating expenses	11,131	14,448
Interest expense	10,098	11,574
Depreciation and amortization	8,798	10,910
Total operating expenses	30,027	36,932
Loss on remeasurement, sale or write down of assets, net	-86	0
Net income	9,443	12,394
Company's equity in net income	4,268	5,691
Tysons Corner LLC	'	'
Revenues:	'	'
Minimum rents	16,278	15,497
Percentage rents	424	566
Tenant recoveries	11,894	11,024
Other	687	918
Total revenues	29,283	28,005
Expenses:	'	'
Shopping center and operating expenses	10,159	8,482
Interest expense	7,830	2,240
Depreciation and amortization	4,602	4,430
Total operating expenses	22,591	15,152
Loss on remeasurement, sale or write down of assets, net	0	0
Net income	6,692	12,853
Company's equity in net income	1,758	4,877
Other Joint Ventures	'	'
Revenues:	'	'
Minimum rents	55,899	60,961
Percentage rents	968	1,302
Tenant recoveries	25,111	27,212
Other	7,855	7,413
Total revenues	89,833	96,888
Expenses:	'	'
Shopping center and operating expenses	33,880	36,171
Interest expense	19,571	24,117
Depreciation and amortization	21,523	21,821
Total operating expenses	74,974	82,109
Loss on remeasurement, sale or write down of assets, net	-18	-190
Net income	14,841	14,589
Company's equity in net income	$7,743	$7,547

Property_Details

Property: (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Jan. 15, 2014	Feb. 14, 2014	Mar. 17, 2014
				Rotterdam Square	Somersville Town Center	Lake Square Mall
				sqft	sqft	sqft
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'
Land	$1,697,973	'	$1,707,005	'	'	'
Buildings and improvements	6,499,863	'	6,555,212	'	'	'
Tenant improvements	533,650	'	537,754	'	'	'
Equipment and furnishings	153,177	'	152,198	'	'	'
Construction in progress	253,113	'	229,169	'	'	'
Total	9,137,776	'	9,181,338	'	'	'
Less accumulated depreciation	-1,583,797	'	-1,559,572	'	'	'
Property, net	7,553,979	'	7,621,766	'	'	'
Depreciation expenses	68,478	65,896	'	'	'	'
Gain on remeasurement, sale or write down of assets, net	-1,611	4,828	'	'	'	'
Property area (in square feet)	'	'	'	585,000	348,000	559,000
Gain on the sale of assets	'	5,419	'	'	'	'
Write off of development cost	'	($591)	'	'	'	'

Tenant_and_Other_Receivables_n1

Tenant and Other Receivables, net: (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 17, 2014	Mar. 17, 2014
In Thousands, unless otherwise specified			Accrued percentage rents	Accrued percentage rents	6.5% Note Receivable	5.0% Note Receivable
Components of tenant and other receivables, net	'	'	'	'	'	'
Allowance for doubtful accounts	$2,941	$2,878	'	'	'	'
Accounts receivable	'	'	2,723	9,824	'	'
Deferred rent receivable due to straight-line rent adjustments	54,303	53,380	'	'	'	'
Note receivable, interest rate (as a percent)	'	'	'	'	6.46%	5.00%
Notes receivable	'	'	'	'	$6,500	$3,103

Deferred_Charges_and_Other_Ass2

Deferred Charges and Other Assets, net: (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'		'	'
Leasing	$213,741		'	$223,038
Financing	50,427		'	51,695
Intangible assets:	'		'	'
In-place lease values	188,083		'	205,651
Leasing commissions and legal costs	47,504		'	50,594
Above-market leases	115,035		'	118,770
Deferred tax assets	31,528		'	31,356
Deferred compensation plan assets	31,148		'	30,932
Other assets	67,206		'	65,793
Deferred charges and other assets, gross	744,672		'	777,829
Less accumulated amortization(1)	-228,395	[1]	'	-244,771	[1]
Deferred charges and other assets, net	516,277		'	533,058
Accumulated amortization for intangible assets	81,496		'	89,141
Amortization expense for intangible assets	$12,739		$13,665	'
[1]	Accumulated amortization includes $81,496 and $89,141 relating to in-place lease values, leasing commissions and legal costs at March 31, 2014 and December 31, 2013, respectively. Amortization expense of in-place lease values, leasing commissions and legal costs was $12,739 and $13,665 for the three months ended March 31, 2014 and 2013, respectively.

Deferred_Charges_and_Other_Ass3

Deferred Charges and Other Assets, net: (Details 2) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Allocated values of leases	'		'
Less accumulated amortization	($81,496)		($89,141)
Above-Market Leases	'		'
Allocated values of leases	'		'
Original allocated value	115,035		118,770
Less accumulated amortization	-48,461		-46,912
Allocated value net	66,574		71,858
Below-Market Leases	'		'
Allocated values of leases	'		'
Original allocated value	182,005	[1]	187,537	[1]
Less accumulated amortization	-80,583	[1]	-79,271	[1]
Allocated value net	$101,422	[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 $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Mortgage loans payable on real estate	'		'
Carrying amount of mortgage notes, related party	$268,029	[1]	$269,381	[1]
Carrying amount of mortgage notes, other	4,115,971	[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	234,214	[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	48,824	[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	116,421	[1]	117,120	[1]
Carrying amount of mortgage notes, other	116,421	[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	200,658	[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	14,482	[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	105,367	[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	123,352	[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	266,397	[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	232,245	[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	79,075	[1]	79,391	[1]
Carrying amount of mortgage notes, other	79,075	[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	35,235	[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	318,249	[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	488,075	[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	213,244	[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	135,186	[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	234,160	[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	135,917	[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	72,449	[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	68,316	[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	22,897	[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	72,533	[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	41,955	[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)	2.72%	[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	98,729	[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	151,524	[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 CollateralMarch 31, 2014 December 31, 2013Arrowhead Towne Center$13,874 $14,642Camelback Colonnade1,824 2,120Deptford Mall(13) (14)Fashion Outlets of Niagara Falls USA6,110 6,342Superstition Springs Center816 895Valley Mall(197) (219) $22,414 $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 March 31, 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 March 31, 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 March 31, 2014 and December 31, 2013, the total interest rate was 2.72% and 2.73%, respectively.

Mortgage_Notes_Payable_Premium

Mortgage Notes Payable - Premiums and Discounts (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Mortgage loans payable on real estate	'	'
Debt premiums (discounts), net	$22,414	$23,766
Arrowhead Towne Center	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	13,874	14,642
Camelback Colonnade	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	1,824	2,120
Deptford Mall One	'	'
Mortgage loans payable on real estate	'	'
Debt discounts	-13	-14
Fashion Outlets of Niagara Falls USA	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	6,110	6,342
Superstition Springs Center	'	'
Mortgage loans payable on real estate	'	'
Debt premiums	816	895
Valley Mall	'	'
Mortgage loans payable on real estate	'	'
Debt discounts	($197)	($219)

Mortgage_Notes_Payable_Footnot

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

3 Months Ended

3 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Feb. 07, 2014

Mar. 31, 2014

Mar. 31, 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 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%

[1],[3]

3.04%

'

4.78%

[1],[4]

2.72%

[1],[5]

2.73%

'

Loss on extinguishment of debt

-358,000

0

'

'

'

'

'

-358,000

'

'

'

'

Interest rate basis

'

'

'

'LIBOR

'

'LIBOR

'

'

'

'LIBOR

'

'

Mortgage notes payable which could become recourse

84,183,000

'

77,192,000

'

'

'

'

'

'

'

'

'

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

'12 months

'

'

'

'

'

'

'

'

'

'

'

Interest expense capitalized

2,485,000

2,468,000

'

'

'

'

'

'

'

'

'

'

Fair value of mortgage notes payable

$4,462,272,000

'

$4,500,177,000

'

'

'

'

'

'

'

'

'

[1]

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

[2]

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 March 31, 2014 and December 31, 2013, the total interest rate was 2.95% and 2.96%, respectively.

[3]

The loan bears interest at LIBOR plus 2.25% and matures on March 1, 2017. At March 31, 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 March 31, 2014 and December 31, 2013, the total interest rate was 2.72% and 2.73%, respectively.

Bank_and_Other_Notes_Payable_D

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

3 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Dec. 08, 2011

Mar. 31, 2014

Dec. 31, 2013

Mar. 29, 2013

Mar. 31, 2014

Dec. 31, 2013

Aug. 06, 2013

Mar. 31, 2014

Dec. 08, 2011

Aug. 06, 2013

Mar. 31, 2014

Dec. 08, 2011

Convertible Notes Payable

Line of Credit

Line of Credit

Unsecured term loan

Unsecured term loan

Unsecured term loan

Prasada Note

Prasada Note

Prasada Note

Low end of range

Low end of range

Low end of range

High end of range

High end of range

High end of range

Line of Credit

Line of Credit

Unsecured term loan

Line of Credit

Line of Credit

Unsecured term loan

Mortgage loans payable on real estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving line of credit

'

$1,500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate spread over basis (as a percent)

'

1.38%

'

'

1.95%

'

'

'

'

1.38%

1.75%

1.95%

2.00%

3.00%

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

'

'

'

'

'

'

'

'

Interest rate on debt (as a percent)

'

'

'

'

'

'

5.25%

'

'

'

'

'

'

'

'

Interest rate basis

'

'

'

'LIBOR

'LIBOR

'

'

'

'

'

'

'

'

'

'

Outstanding borrowings under the line of credit

'

90,000,000

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

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

'

1.83%

1.85%

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of outstanding line of credit

'

84,718,000

28,214,000

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

2.50%

2.51%

'

'

'

'

'

'

'

'

'

Debt, carrying value

'

'

'

'

'

'

'

12,132,000

12,537,000

'

'

'

'

'

'

Debt, fair value

'

'

'

'

$120,760,000

$120,802,000

'

$12,613,000

$13,114,000

'

'

'

'

'

'

CoVenture_Arrangement_Details

Co-Venture Arrangement: (Details) (USD $)	Mar. 31, 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	$78,224	$81,515	$168,154

Noncontrolling_Interests_Detai

Noncontrolling Interests: (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 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	$614,656	$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	Mar. 31, 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		3 Months Ended	0 Months Ended
	Jan. 31, 2013	Jan. 24, 2013	Mar. 31, 2012	Apr. 25, 2013	Oct. 24, 2013	Sep. 17, 2013	Sep. 16, 2013
	Green Acres Mall	Green Acres Mall	Green Acres Mall	Green Acres Adjacent	Superstition Springs Land I	Camelback Colonnade	Camelback Colonnade
		sqft		acre	sqft	sqft
Acquisition	'	'	'	'	'	'	'
Property area (in square feet)	'	1,790,000	'	19	1,082,000	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%	67.50%	'
Purchase price funded by cash payment on acquisition	'	'	'	'	23,662,000	'	'
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%

Acquisitions_Allocation_of_Fai

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

Acquisitions_Remeasurement_Gai

Acquisitions - Remeasurement Gain (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Sep. 17, 2013	Oct. 24, 2013	Sep. 16, 2013
In Thousands, unless otherwise specified			Camelback Colonnade	Superstition Springs Land I	Camelback Colonnade
Acquisition	'	'	'	'	'
Fair value of existing ownership interest (at % ownership)	'	'	$41,690	$47,340	'
Investments in unconsolidated joint ventures	-724,630	-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 $)	Mar. 31, 2014	Dec. 31, 2013	Oct. 24, 2013	Sep. 16, 2013
In Thousands, unless otherwise specified			Superstition Springs Land I	Camelback Colonnade
Acquisition	'	'	'	'
Purchase price	'	'	$46,162	'
Less debt assumed	'	'	-22,500	'
Carrying value of investment	724,630	701,483	32,476	'
Remeasurement gain	'	'	14,864	'
Fair value of acquired net assets (at 100% ownership)	'	'	$71,002	'
Ownership interest at completion of acquisition (as a percent)	'	'	100.00%	100.00%

Acquisitions_Acquisition_Pro_F

Acquisitions: Acquisition - Pro Forma Results (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013
Business Combinations [Abstract]	'
Total revenues (1)	$253,552	[1]
Income (loss) from continuing operations (1)	$19,152	[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

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Dec. 11, 2013

Mar. 31, 2014

Mar. 31, 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

Mar. 31, 2014

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

Fiesta Mall

Chesterfield Towne Center

Centre at Salisbury

Chesterfield Towne Center

sqft

sqft

sqft

sqft

sqft

sqft

Discontinued Operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from sale

$292,500

'

'

$79,000

'

$10,475

$5,430

$5,700

$12,000

'

$230,000

'

'

'

'

'

Gain (loss) from sale

'

0

6

59,767

'

-5,257

1,695

-2,031

-2,633

'

82,151

'

'

'

'

151,467

Gain (loss) on extinguishment of debt

'

-358

0

'

'

'

'

'

'

'

'

1,252

'

'

'

'

Property area (in square feet)

'

'

'

793,000

890,000

'

'

'

'

603,000

'

'

933,000

1,016,000

862,000

'

Revenues from discontinued operations

'

'

19,478

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from discontinued operations

'

0

2,556

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Divestiture of Business, Cash

'

'

'

'

'

'

'

'

'

'

'

'

'

67,763

'

'

Proceeds from Divestiture of Business, Assumption of Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

$109,737

$115,000

'

Commitments_and_Contingencies_

Commitments and Contingencies: (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Contingent Liabilities	'	'	'
Operating lease rent expense	$2,668	$2,635	'
Contingent liability under letters of credit	16,388	'	18,862
Outstanding obligations under construction agreements	$54,803	'	'

RelatedParty_Transactions_Deta

Related-Party Transactions: (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	note		note
Related party transactions	'	'	'
Interest expense, related party	$3,708	$3,780	'
Loans to unconsolidated joint ventures	3,374	'	2,756
Due from affiliates	28,559	'	30,132
Unconsolidated joint ventures	'	'	'
Related party transactions	'	'	'
Interest income, related party	31	61	'
Due from affiliates	2,507	'	3,822
Northwestern Mutual Life (NML)	'	'	'
Related party transactions	'	'	'
Interest expense payable, related party	1,234	'	1,240
Unconsolidated joint ventures and third-party managed properties	'	'	'
Related party transactions	'	'	'
Management Fees	4,825	5,493	'
Development and Leasing Fees	2,496	1,695	'
Fees charged to unconsolidated joint ventures and third-party managed properties	7,321	7,188	'
Related parties note receivable, AWE Talisman Company	'	'	'
Related party transactions	'	'	'
Interest income, related party	154	154	'
Number of notes receivable (in notes)	2	'	2
Note receivable, interest rate (as a percent)	5.00%	'	'
Debt, carrying value	13,758	'	13,603
Related parties note receivable, RED Consolidated Holdings, LLC	'	'	'
Related party transactions	'	'	'
Interest income, related party	160	6	'
Due from affiliates	$12,294	'	$12,707
Note receivable, interest rate (as a percent)	5.25%	'	'

Share_and_UnitBased_Plans_Narr

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

3 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 07, 2014

Dec. 31, 2013

Mar. 31, 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)

'

'

70,271

589,443

0

'

5,409

246,471

70,042

'

272,930

Number of executives receiving grants (in executive officers)

'

'

'

'

'

'

'

'

7

'

'

Granted

'

'

$60.22

[1]

$53.18

[1]

$0

[1]

'

$59.61

[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

$3,841

$1,437

'

'

'

'

'

'

'

'

'

Unrecognized compensation cost of share and unit-based plans

'

'

$5,526

$13,109

$499

$55

$1,058

'

'

'

'

[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
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Share and unit-based plans	'	'
Compensation cost under share and unit-based plans	$20,346	$5,137
LTIP Units	'	'
Share and unit-based plans	'	'
Compensation cost under share and unit-based plans	18,240	2,957
Stock awards	'	'
Share and unit-based plans	'	'
Compensation cost under share and unit-based plans	114	110
Stock units	'	'
Share and unit-based plans	'	'
Compensation cost under share and unit-based plans	1,682	1,824
Stock options	'	'
Share and unit-based plans	'	'
Compensation cost under share and unit-based plans	4	4
Phantom stock units	'	'
Share and unit-based plans	'	'
Compensation cost under share and unit-based plans	$306	$242

Share_and_UnitBased_Plans_Nonv

Share and Unit-Based Plans - Nonvested Equity Awards (Details) (USD $)	3 Months Ended
	Mar. 31, 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	5,409
Vested	-4,978
Forfeited	0
Balance at end of period	18,006
Value (in dollars per share)	'
Balance at beginning of period	$58.66	[1]
Granted	$59.61	[1]
Vested	$59.37	[1]
Forfeited	$0	[1]
Balance at end of period	$58.75	[1]
Stock units	'
Units (in shares)	'
Balance at beginning of period	137,318
Granted	70,271
Vested	-67,917
Forfeited	0
Balance at end of period	139,672
Value (in dollars per share)	'
Balance at beginning of period	$57.24	[1]
Granted	$60.22	[1]
Vested	$55.06	[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 $)	3 Months Ended
	Mar. 31, 2014
Stock Options (in shares)	'
Forfeited	0
Value (in dollars per share)	'
Forfeited	$0	[1]
SARs	'
SARs (in shares)	'
Balance at beginning of period	1,070,991
Granted	0
Exercised (in shares)	0
Forfeited	0
Balance at end of period	1,070,991
Value (in dollars per share)	'
Balance at beginning of period	$56.66
Granted	$0
Exercised	$0
Forfeited	$0	[1]
Balance at beginning of period	$56.66
Stock options	'
Stock Options (in shares)	'
Balance at beginning of period	10,068
Granted	0
Exercised	0
Balance at end of period	10,068
Value (in dollars per share)	'
Balance at beginning of period	$59.57
Granted	$0
Exercised	$0
Balance at end of period	$59.57
[1]	Value represents the weighted average grant date fair value.

Income_Taxes_Details

Income Taxes: (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income tax benefit	'	'	'
Current	$0	($281)	'
Deferred	172	524	'
Income tax benefit	172	243	'
Components of net deferred tax assets	'	'	'
Net deferred tax assets	$31,528	'	$31,356

Subsequent_Events_Details

Subsequent Events: (Details) (Subsequent event, USD $)	0 Months Ended
	Apr. 25, 2014
Subsequent event	'
Subsequent events	'
Dividend/distribution for common stockholders and OP Unit holders (in dollars per share)	$0.62
Percentage of dividend/distribution payable in cash (as a percent)	100.00%