10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2012

SIMON PROPERTY GROUP, INC.
(Exact name of registrant as specified in its charter)

Delaware
(State of incorporation or organization)

001-14469
(Commission File No.)

046-268599
(I.R.S. Employer Identification No.)

225 West Washington Street
Indianapolis, Indiana 46204
(Address of principal executive offices)

(317) 636-1600
(Registrant's telephone number, including area code)

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.            Yes ý            No o

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files).            Yes ý            No o

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer," and "smaller reporting company" in Rule 12b-2 of the Exchange Act (check one):

Large accelerated filer ý	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether Registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).            Yes o            No ý

As of March 31, 2012, Simon Property Group, Inc. had 303,088,958 shares of common stock, par value $0.0001 per share and 8,000 shares of Class B common stock, par value $0.0001 per share outstanding.

Simon Property Group, Inc. and Subsidiaries

Form 10-Q

INDEX

			Page
Part I — Financial Information
	Item 1.	Consolidated Financial Statements (Unaudited)
		Consolidated Balance Sheets as of March 31, 2012 and December 31, 2011		3
		Consolidated Statements of Operations and Comprehensive Income for the three months ended March 31, 2012 and 2011		4
		Consolidated Statements of Cash Flows for the three months ended March 31, 2012 and 2011		5
		Condensed Notes to Consolidated Financial Statements		6
	Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations		19
	Item 3.	Qualitative and Quantitative Disclosures About Market Risk		32
	Item 4.	Controls and Procedures		32
Part II — Other Information
	Item 1.	Legal Proceedings		33
	Item 1A.	Risk Factors		33
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		33
	Item 5.	Other Information		33
	Item 6.	Exhibits		34
Signatures				35

2

Simon Property Group, Inc. and Subsidiaries
Unaudited Consolidated Balance Sheets
(Dollars in thousands, except share amounts)

	March 31, 2012		December 31, 2011
ASSETS:
Investment properties at cost	$	33,923,326	$	29,657,046
Less — accumulated depreciation		8,587,591		8,388,130
		25,335,735		21,268,916
Cash and cash equivalents		880,549		798,650
Tenant receivables and accrued revenue, net		417,085		486,731
Investment in unconsolidated entities, at equity		1,930,480		1,378,084
Investment in Klépierre, at equity		2,054,820		—
Deferred costs and other assets		1,798,796		1,633,544
Notes receivable from related party		—		651,000
Total assets	$	32,417,465	$	26,216,925
LIABILITIES:
Mortgages and other indebtedness	$	22,800,562	$	18,446,440
Accounts payable, accrued expenses, intangibles, and deferred revenues		1,127,794		1,091,712
Cash distributions and losses in partnerships and joint ventures, at equity		710,314		695,569
Other liabilities and accrued dividends		222,874		170,971
Total liabilities		24,861,544		20,404,692
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties		262,387		267,945
EQUITY:
Stockholders' Equity
Capital stock (850,000,000 total shares authorized, $0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Series J 83/8% cumulative redeemable preferred stock, 1,000,000 shares authorized, 796,948 issued and outstanding with a liquidation value of $39,847		44,965		45,047
Common stock, $0.0001 par value, 511,990,000 shares authorized, 306,954,102 and 297,725,698 issued and outstanding, respectively		31		30
Class B common stock, $0.0001 par value, 10,000 shares authorized, 8,000 issued and outstanding		—		—
Capital in excess of par value		9,093,132		8,103,133
Accumulated deficit		(2,885,666)		(3,251,740)
Accumulated other comprehensive loss		(23,720)		(94,263)
Common stock held in treasury at cost, 3,865,144 and 3,877,448 shares, respectively		(150,836)		(152,541)
Total stockholder's equity		6,077,906		4,649,666
Noncontrolling interests		1,215,628		894,622
Total equity		7,293,534		5,544,288
Total liabilities and equity	$	32,417,465	$	26,216,925

The accompanying notes are an integral part of these statements.

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Simon Property Group, Inc. and Subsidiaries
Unaudited Consolidated Statements of Operations and Comprehensive Income
(Dollars in thousands, except per share amounts)

	For the Three Months Ended March 31,
	2012		2011
REVENUE:
Minimum rent	$	702,098	$	644,332
Overage rent		27,680		17,142
Tenant reimbursements		306,388		281,425
Management fees and other revenues		32,287		30,492
Other income		50,516		46,483
Total revenue		1,118,969		1,019,874
EXPENSES:
Property operating		104,740		99,541
Depreciation and amortization		285,109		266,310
Real estate taxes		98,702		93,264
Repairs and maintenance		25,641		30,835
Advertising and promotion		21,098		21,888
Provision for credit losses		3,545		1,405
Home and regional office costs		32,858		29,056
General and administrative		13,889		7,667
Other		17,778		19,018
Total operating expenses		603,360		568,984
OPERATING INCOME		515,609		450,890
Interest expense		(258,079)		(248,119)
Income tax expense of taxable REIT subsidiaries		(891)		(1,142)
Income from unconsolidated entities		30,353		18,621
Gain (loss) upon acquisition of controlling interests, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net		494,837		(584)
CONSOLIDATED NET INCOME		781,829		219,666
Net income attributable to noncontrolling interests		135,585		39,420
Preferred dividends		834		834
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	$	645,410	$	179,412
BASIC EARNINGS PER COMMON SHARE:
Net income attributable to common stockholders	$	2.18	$	0.61
DILUTED EARNINGS PER COMMON SHARE:
Net income attributable to common stockholders	$	2.18	$	0.61
Consolidated Net Income	$	781,829	$	219,666
Unrealized gain (loss) on derivative hedge agreements		11,692		(11,283)
Net loss on derivative instruments reclassified from accumulated other comprehensive income into interest expense		5,115		3,944
Currency translation adjustments		43,941		21,899
Changes in available-for-sale securities and other		24,535		2,241
Comprehensive income		867,112		236,467
Comprehensive income attributable to noncontrolling interests		150,325		42,273
Comprehensive income attributable to common stockholders	$	716,787	$	194,194

The accompanying notes are an integral part of these statements.

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Simon Property Group, Inc. and Subsidiaries
Unaudited Consolidated Statements of Cash Flows
(Dollars in thousands)

	For the Three Months Ended March 31,
	2012		2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated Net Income	$	781,829	$	219,666
Adjustments to reconcile consolidated net income to net cash provided by operating activities —
Depreciation and amortization		298,502		274,279
(Gain) loss upon acquisition of controlling interests, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net		(494,837)		584
Straight-line rent		(7,427)		(5,888)
Equity in income of unconsolidated entities		(30,353)		(18,621)
Distributions of income from unconsolidated entities		27,887		22,435
Changes in assets and liabilities —
Tenant receivables and accrued revenue, net		77,613		59,945
Deferred costs and other assets		(71,948)		(47,513)
Accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities		(8,312)		(52,582)
Net cash provided by operating activities		572,954		452,305
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions		(3,618,399)		—
Repayments of loans from related parties		92,600		—
Capital expenditures, net		(124,248)		(59,711)
Cash impact from the consolidation of properties		91,170		—
Net proceeds from sale of assets		375,838		3,438
Investments in unconsolidated entities		(61,744)		(2,763)
Purchase of marketable and non-marketable securities		(7,245)		(8,830)
Distributions of capital from unconsolidated entities and other		76,721		55,837
Net cash used in investing activities		(3,175,307)		(12,029)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sales of common stock and other, net of transaction costs		1,214,086		359
Distributions to noncontrolling interest holders in properties		(5,110)		(22,101)
Contributions from noncontrolling interest holders in properties		—		52
Preferred distributions of the Operating Partnership		(479)		(479)
Preferred dividends and distributions to stockholders		(280,034)		(235,283)
Distributions to limited partners		(57,907)		(48,292)
Proceeds from issuance of debt, net of transaction costs		4,056,144		—
Repayments of debt		(2,242,448)		(295,200)
Net cash provided by (used in) financing activities		2,684,252		(600,944)
INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS		81,899		(160,668)
CASH AND CASH EQUIVALENTS, beginning of period		798,650		796,718
CASH AND CASH EQUIVALENTS, end of period	$	880,549	$	636,050

The accompanying notes are an integral part of these statements.

5

Simon Property Group, Inc. and Subsidiaries

Condensed Notes to Consolidated Financial Statements

(Unaudited)

(Dollars in thousands, except share and per share amounts and where indicated in millions or billions)

1.         Organization

            Simon Property Group, Inc., or Simon Property, is a Delaware corporation that operates as a self-administered and self-managed real estate investment trust, or REIT, under the Internal Revenue Code. Simon Property Group, L.P., or the Operating Partnership, is our majority-owned partnership subsidiary that owns all of our real estate properties and other assets. In these condensed notes to the unaudited consolidated financial statements, the terms "we", "us" and "our" refer to Simon Property, the Operating Partnership, and its subsidiaries.

            We own, develop and manage retail real estate properties, which consist primarily of regional malls, Premium Outlets®, The Mills®, and community/lifestyle centers. As of March 31, 2012, we owned or held an interest in 325 income-producing properties in the United States, which consisted of 161 regional malls, 58 Premium Outlets, 70 community/lifestyle centers, 13 properties in the Mills portfolio, and 23 other shopping centers or outlet centers in 41 states and Puerto Rico. Internationally, as of March 31, 2012, we had ownership interests in eight Premium Outlets in Japan, two Premium Outlets in South Korea, one Premium Outlet in Mexico, and one Premium Outlet in Malaysia. Additionally, on March 14, 2012, we purchased a 28.7% equity stake in Klépierre, a publicly traded, Paris-based real estate company, which owns, or has an interest in, approximately 271 shopping centers located in 13 countries in Europe.

2.         Basis of Presentation

            The accompanying unaudited consolidated financial statements include the accounts of all majority-owned subsidiaries, and all significant intercompany amounts have been eliminated. Due to the seasonal nature of certain operational activities, the results for the interim period ended March 31, 2012, are not necessarily indicative of the results to be expected for the full year.

            These consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and include all of the information and disclosures required by accounting principles generally accepted in the United States (GAAP) for interim reporting. Accordingly, they do not include all of the disclosures required by GAAP for complete financial statements. In the opinion of management, all adjustments necessary for fair presentation (including normal recurring accruals) have been included. The consolidated financial statements in this Form 10-Q should be read in conjunction with the audited consolidated financial statements and related notes contained in our 2011 Annual Report on Form 10-K.

            As of March 31, 2012, we consolidated 229 wholly-owned properties and 18 additional properties that are less than wholly-owned, but which we control or for which we are the primary beneficiary. We account for the remaining 90 properties, or the joint venture properties, as well as our investment in Klépierre, using the equity method of accounting. We manage the day-to-day operations of 76 of the 90 joint venture properties, but have determined that our partner or partners have substantive participating rights with respect to the assets and operations of these joint venture properties. Our investments in joint ventures in Japan, South Korea, Malaysia, and Mexico comprise 12 of the remaining 14 joint venture properties. The international properties are managed locally by joint ventures in which we share oversight responsibility with our partner.

            We allocate net operating results of the Operating Partnership after preferred distributions to third parties and to us based on the partners' respective weighted average ownership interests in the Operating Partnership. Net operating results of the Operating Partnership attributed to third parties are reflected in net income attributable to noncontrolling interests. Our weighted average ownership interest in the Operating Partnership was 82.9% and 83.0% for the three months ended March 31, 2012 and 2011, respectively. As of March 31, 2012 and December 31, 2011, our ownership interest in the Operating Partnership was 83.2% and 82.8%, respectively. We adjust the noncontrolling limited partners' interests at the end of each period to reflect their interest in the Operating Partnership.

            Preferred distributions of the Operating Partnership are accrued at declaration and represent distributions on outstanding preferred units of partnership interests held by limited partners, or preferred units, and are included in net income attributable to noncontrolling interests.

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Reclassifications

            We made certain reclassifications of prior period amounts in the consolidated financial statements to conform to the 2012 presentation. These reclassifications had no impact on previously reported net income attributable to common stockholders or earnings per share.

3.         Significant Accounting Policies

Cash and Cash Equivalents

            We consider all highly liquid investments purchased with an original maturity of 90 days or less to be cash and cash equivalents. Cash equivalents are carried at cost, which approximates fair value. Cash equivalents generally consist of commercial paper, bankers' acceptances, Eurodollars, repurchase agreements, and money market deposits or securities. Financial instruments that potentially subject us to concentrations of credit risk include our cash and cash equivalents and our trade accounts receivable. We place our cash and cash equivalents with institutions with high credit quality. However, at certain times, such cash and cash equivalents are in excess of FDIC and SIPC insurance limits.

Marketable and Non-Marketable Securities

            Marketable securities consist primarily of the investments of our captive insurance subsidiaries, available-for-sale securities, our deferred compensation plan investments, and certain investments held to fund the debt service requirements of debt previously secured by investment properties that have been sold.

            The types of securities included in the investment portfolio of our captive insurance subsidiaries typically include U.S. Treasury or other U.S. government securities as well as corporate debt securities with maturities ranging from less than 1 to 10 years. These securities are classified as available-for-sale and are valued based upon quoted market prices or other observable inputs when quoted market prices are not available. The amortized cost of debt securities, which approximates fair value, held by our captive insurance subsidiaries is adjusted for amortization of premiums and accretion of discounts to maturity. Changes in the values of these securities are recognized in accumulated other comprehensive income (loss) until the gain or loss is realized or until any unrealized loss is deemed to be other-than-temporary. We review any declines in value of these securities for other-than-temporary impairment and consider the severity and duration of any decline in value. To the extent an other-than-temporary impairment is deemed to have occurred, an impairment charge is recorded and a new cost basis is established. Subsequent changes are then recognized through other comprehensive income (loss) unless another other-than-temporary impairment is deemed to have occurred.

            Our investments in Capital Shopping Centres Group PLC, or CSCG, and Capital & Counties Properties PLC, or CAPC, are accounted for as available-for-sale securities. These investments are adjusted to their quoted market price, including a related foreign exchange component, with corresponding adjustment in other comprehensive income (loss). At March 31, 2012, we owned 35.4 million shares each of CSCG and of CAPC. At March 31, 2012, the market value of our investments in CSCG and CAPC was $187.3 million and $108.4 million, respectively, with an aggregate net unrealized gain on these investments of approximately $63.9 million. The market value of our investments in CSCG and CAPC at December 31, 2011 was $170.7 million and $100.9 million, respectively, with an aggregate unrealized gain of $39.7 million.

            Net unrealized gains recorded in other comprehensive income (loss) as of March 31, 2012 and December 31, 2011 were approximately $66.4 million and $41.9 million, respectively, and represent the valuation and related currency adjustments for our marketable securities. As of March 31, 2012, we do not consider any of the declines in value of our marketable and non-marketable securities to be an other-than-temporary impairment, as these market value declines, if any, have existed for a short period of time, and, in the case of debt securities, we have the ability and intent to hold these securities to maturity.

            Our insurance subsidiaries are required to maintain statutory minimum capital and surplus as well as maintain a minimum liquidity ratio. Therefore, our access to these securities may be limited. Our deferred compensation plan investments are classified as trading securities and are valued based upon quoted market prices. The investments have a matching liability as the amounts are fully payable to the employees that earned the compensation. Changes in value of these securities and changes to the matching liability to employees are both recognized in earnings and, as a result, there is no impact to consolidated net income.

            As of March 31, 2012 and December 31, 2011, we also had investments of $25.2 million and $24.9 million, respectively, which must be used to fund the debt service requirements of mortgage debt related to investment

7

properties sold that previously collateralized the debt. These investments are classified as held-to-maturity and are recorded at amortized cost as we have the ability and intent to hold these investments to maturity.

            At March 31, 2012 and December 31, 2011, we had investments of $105.1 million in non-marketable securities that we account for under the cost method. We regularly evaluate these investments for any other-than-temporary impairment in their estimated fair value and determined that no adjustment in the carrying value was required.

Loans Held for Investment

            From time to time, we may make investments in mortgage loans or mezzanine loans of third parties that own and operate commercial real estate assets located in the United States. Mortgage loans are secured, in part, by mortgages recorded against the underlying properties which are not owned by us. Mezzanine loans are secured, in part, by pledges of ownership interests of the entities that own the underlying real estate. Loans held for investment are carried at cost, net of any premiums or discounts which are accreted or amortized over the life of the related loan receivable utilizing the effective interest method. We evaluate the collectability of both interest and principal of each of these loans quarterly to determine whether the value has been impaired. A loan is deemed to be impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the existing contractual terms. When a loan is impaired, the amount of the loss accrual is calculated by comparing the carrying amount of the loan held for investment to its estimated realizable value.

            At March 31, 2012 and December 31, 2011, we had investments in three mortgage and mezzanine loans with an aggregate carrying value of $162.9 million and $162.8 million, respectively. These loans mature at various dates through October 2012 with a weighted average maturity of approximately three months. Certain of these loans require interest-only payments while others require payments of interest and principal based on a 30 year amortization. Interest rates on these loans are fixed between 5.9% and 7.0% per annum with a weighted average interest rate of approximately 6.3% and approximate market rates for instruments of similar quality and duration. During the three months ended March 31, 2012 and March 31 2011, we recorded $3.1 million and $6.9 million, respectively, in interest income earned from these loans held for investment. Payments on each of these loans were current as of March 31, 2012. In April 2012, one of these mortgage loans with a principal balance of $76.7 million was repaid in its entirety.

            On December 9, 2011, we paid consideration of $88.8 million to acquire a 50% equity interest in two real estate developments for which we are the construction lender. The loans primarily bear interest at 7.0% and mature in May and July 2013. At March 31, 2012 and December 31, 2011, the aggregate amount drawn on the loans was $82.3 million and $50.7 million, respectively. We consolidated these assets as of the date we acquired our equity interest and, accordingly, amounts drawn on the loans are eliminated in consolidation.

Fair Value Measurements

            We hold marketable securities that totaled $451.2 million and $417.0 million at March 31, 2012 and December 31, 2011, respectively, and are considered to have Level 1 fair value inputs. In addition, we have derivative instruments which are classified as having Level 2 inputs which consist primarily of interest rate swap agreements and foreign currency forward contracts with a gross liability balance of $8.4 million and $12.2 million at March 31, 2012 and December 31, 2011, respectively, and a gross asset value of $1.2 million and $14.9 million at March 31, 2012 and December 31, 2011, respectively. We also have interest rate cap agreements with nominal asset values.

            Level 1 fair value inputs are quoted prices for identical items in active, liquid and visible markets such as stock exchanges. Level 2 fair value inputs are observable information for similar items in active or inactive markets, and appropriately consider counterparty creditworthiness in the valuations. Level 3 fair value inputs reflect our best estimate of inputs and assumptions market participants would use in pricing an asset or liability at the measurement date. The inputs are unobservable in the market and significant to the valuation estimate.

            Note 6 includes a discussion of the fair value of debt measured using Level 1 and Level 2 inputs. Note 5 includes a discussion of the fair values recorded in purchase accounting and impairment, using Level 2 and Level 3 inputs. Level 3 inputs to our purchase accounting and impairment include our estimations of net operating results of the property, capitalization rates and discount rates.

8

Noncontrolling Interests and Temporary Equity

            Details of the carrying amount of our noncontrolling interests are as follows:

	As of March 31, 2012		As of December 31, 2011
Limited partners' interests in the Operating Partnership	$	1,216,247	$	953,622
Nonredeemable noncontrolling deficit interests in properties, net		(619)		(59,000)
Total noncontrolling interests reflected in equity	$	1,215,628	$	894,622

            The remaining interest in a property or portfolio of properties which are redeemable at the option of the holder or in circumstances that may be outside our control, are accounted for as temporary equity within limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties in the accompanying consolidated balance sheets. The carrying amount of the noncontrolling interest is adjusted to the redemption amount assuming the instrument is redeemable at the balance sheet date. Changes in the redemption value of the underlying noncontrolling interest are recorded within accumulated deficit. There are no noncontrolling interests redeemable at amounts in excess of fair value.

            Net income attributable to noncontrolling interests (which includes nonredeemable noncontrolling interests in consolidated properties, limited partners' interests in the Operating Partnership, redeemable noncontrolling interests in consolidated properties and preferred distributions payable by the Operating Partnership) is a component of consolidated net income. In addition, the individual components of other comprehensive income (loss) are presented in the aggregate for both controlling and noncontrolling interests, with the portion attributable to noncontrolling interests deducted from comprehensive income attributable to common stockholders.

            A rollforward of noncontrolling interests reflected in equity is as follows:

	For the Three Months Ended March 31,
	2012		2011
Noncontrolling interests, beginning of period	$	894,622	$	802,972
Net Income attributable to noncontrolling interests after preferred distributions and income attributable to redeemable noncontrolling interests in consolidated properties		133,010		38,941
Distributions to noncontrolling interest holders		(58,098)		(70,393)
Other comprehensive income allocable to noncontrolling interests:
Unrealized gain (loss) on interest rate hedge agreements		2,401		(1,900)
Net loss on derivative instruments reclassified from accumulated comprehensive loss into interest expense		858		671
Currency translation adjustments		7,523		3,739
Changes in available-for-sale securities and other		3,958		343
		14,740		2,853
Adjustment to limited partners' interest from increased (decreased) ownership in the Operating Partnership		163,845		(5,638)
Units issued to limited partners		—		202
Units exchanged for common shares		(1,418)		(2,211)
Purchase of noncontrolling interest and other		68,927		4,426
Noncontrolling interests, end of period	$	1,215,628	$	771,152

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Derivative Financial Instruments

            We record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. We use a variety of derivative financial instruments in the normal course of business to selectively manage or hedge the risks associated with our indebtedness and interest payments. Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements. To accomplish this objective, we primarily use interest rate swaps and caps. We require that hedging derivative instruments be highly effective in reducing the risk exposure that they are designated to hedge. As a result, there was no significant ineffectiveness from any of our derivative activities during the period. We formally designate any instrument that meets these hedging criteria as a hedge at the inception of the derivative contract. We have no credit-risk-related hedging or derivative activities.

            As of March 31, 2012, we had the following outstanding interest rate derivatives related to interest rate risk:

Interest Rate Derivative	Number of Instruments		Notional Amount
Interest Rate Swaps		3	$485.2 million
Interest Rate Caps		6	$445.4 million

            The carrying value of our interest rate swap agreements, at fair value, is a net liability balance of $8.4 million and $10.0 million at March 31, 2012 and December 31, 2011, respectively, and is included in other liabilities and accrued dividends. The interest rate cap agreements were of nominal value at March 31, 2012 and December 31, 2011 and we generally do not apply hedge accounting to these arrangements.

            We are also exposed to fluctuations in foreign exchange rates on financial instruments which are denominated in foreign currencies, primarily in Japan and Europe. We use currency forward contracts and foreign currency denominated debt to manage our exposure to changes in foreign exchange rates on certain Yen and Euro-denominated receivables and net investments. Currency forward contracts involve fixing the Yen:USD or Euro:USD exchange rate for delivery of a specified amount of foreign currency on a specified date. The currency forward contracts are typically cash settled in US dollars for their fair value at or close to their settlement date. Approximately ¥5.0 billion remains as of March 31, 2012 for all forward contracts. We entered into Yen:USD forward contracts during 2010 for approximately ¥1.7 billion that we expect to receive through October 2012 and we entered into Yen:USD forward contracts during 2011 for ¥3.8 billion that we expect to receive through October 2013. In 2012, we entered into additional Yen:USD forward contracts for approximately ¥2.5 billion that we expect to receive through January 5, 2015. The March 31, 2012 net asset balance related to these forward contracts was $1.2 million which is included in deferred costs and other assets. We have reported the changes in fair value for these forward contracts in earnings. The underlying currency adjustments on the foreign currency denominated receivables are also reported in income and generally offset the amounts in earnings for these forward contracts.

            In 2011, we entered into a Euro:USD forward contract with a €141.3 million notional value which was designated as a net investment hedge. The December 31, 2011 asset balance related to this forward was $14.9 million and is included in deferred costs and other assets. We apply hedge accounting and the change in fair value for this Euro forward contract is reflected in other comprehensive income. Changes in the value of this hedge are offset by changes in the underlying hedged Euro-denominated joint venture investment. In connection with our sale of Gallerie Commerciali Italia, or GCI, as further discussed in Note 5, this hedge was terminated in January 2012.

            The total gross accumulated other comprehensive loss related to our derivative activities, including our share of the other comprehensive loss from joint venture properties, approximated $99.0 million and $115.8 million as of March 31, 2012 and December 31, 2011, respectively.

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4.         Per Share Data

            We determine basic earnings per share based on the weighted average number of shares of common stock outstanding during the period and we consider any participating securities for purposes of applying the two-class method. We determine diluted earnings per share based on the weighted average number of shares of common stock outstanding combined with the incremental weighted average shares that would have been outstanding assuming all potentially dilutive common shares were converted into shares at the earliest date possible. The following table sets forth the computation of our basic and diluted earnings per share.

	For the Three Months Ended March 31,
	2012		2011
Net Income available to Common Stockholders — Basic	$	645,410	$	179,412
Effect of dilutive securities:
Impact to General Partner's interest in Operating Partnership from all dilutive securities and options		—		22
Net Income available to Common Stockholders — Diluted	$	645,410	$	179,434
Weighted Average Shares Outstanding — Basic		295,693,410		293,080,205
Effect of stock options		1,110		210,291
Weighted Average Shares Outstanding — Diluted		295,694,520		293,290,496

            For the three months ended March 31, 2012, potentially dilutive securities include stock options, units that are exchangeable for common stock and long-term incentive performance, or LTIP, units granted under our long-term incentive performance programs that are convertible into units and exchangeable for common stock. The only securities that had a dilutive effect for the three months ended March 31, 2012 and 2011 were stock options. We accrue dividends when they are declared.

5.         Investment in Unconsolidated Entities

Real Estate Joint Ventures

            Joint ventures are common in the real estate industry. We use joint ventures to finance properties, develop new properties, and diversify our risk in a particular property or portfolio of properties. We held joint venture ownership interests in 78 properties in the United States as of March 31, 2012 and 87 properties as of December 31, 2011. At March 31, 2012, we also held interests in eight joint venture properties in Japan, two joint venture properties in South Korea, one joint venture property in Mexico, and one joint venture property in Malaysia. We account for these joint venture properties using the equity method of accounting. As discussed below, on January 9, 2012, we sold our interest in GCI which owns 45 properties located in Italy. Additionally, on March 14, 2012, we purchased a 28.7% equity stake in Klépierre.

            Certain of our joint venture properties are subject to various rights of first refusal, buy-sell provisions, put and call rights, or other sale or marketing rights for partners which are customary in real estate joint venture agreements and our industry. We and our partners in these joint ventures may initiate these provisions (subject to any applicable lock up or similar restrictions), which may result in either the sale of our interest or the use of available cash or borrowings, or the use of limited partnership interests in the Operating Partnership, to acquire the joint venture interest from our partner.

Unconsolidated Property Transactions

            On January 6, 2012, SPG-FCM Ventures, LLC, or SPG-FCM, which holds our investment in the Mills Limited Partnership, or TMLP, distributed its interest in Del Amo Fashion Center to SPG-FCM's joint venture partners. We purchased our venture partner's 25% interest for $50.0 million, which increased our ownership in the property to 50%. As a part of the transaction, we and our venture partner each contributed $50.0 million to SPG-FCM which was used to pay down TMLP's senior loan and the loan we made to SPG-FCM, as discussed below.

            On March 22, 2012, we acquired additional interests in 26 properties previously held in TMLP, or the Mills transaction, from our joint venture partner. The transaction resulted in 16 of the properties remaining unconsolidated,

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the consolidation of nine previously unconsolidated properties and the purchase of the remaining noncontrolling interest in a previously consolidated property. The transaction was valued at $1.5 billion, which included repayment of the remaining $562.1 million balance on TMLP's senior loan facility, and retirement of $100.0 million of TMLP's trust preferred securities. In connection with the transaction, our $558.4 million loan to SPG-FCM was extinguished on a non-cash basis. We consolidated approximately $2.6 billion in additional property-level mortgage debt in connection with this transaction. This property-level mortgage debt was previously presented as debt of our unconsolidated entities. We and our joint venture partner had equal ownership in these properties prior to the transaction.

            The consolidation of the previously unconsolidated properties resulted in a remeasurement of our previously held interest in each of these properties to fair value and recognition of a corresponding non-cash gain of $488.7 million. In addition, we recorded an other-than-temporary impairment charge of $22.4 million for the excess of carrying value of our remaining investment in SPG-FCM over its estimated fair value. The gain on the transaction and impairment charge are included in Gain (loss) upon acquisition of controlling interests, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net in the accompanying consolidated statements of operations and comprehensive income. The assets and liabilities of the newly consolidated properties acquired in the Mills transaction have been reflected at their estimated fair value at the acquisition date, the majority of which, approximately $4.3 billion, was allocated to the investment property. This purchase price allocation is preliminary and is subject to revision within the measurement period, not to exceed one year from the date of acquisition.

            On December 31, 2011, as discussed in Note 9, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner.

Loan to SPG-FCM

            As discussed above, our loan to SPG-FCM was extinguished in the Mills transaction. During the three month periods ended March 31, 2012 and 2011, we recorded approximately $2.0 million and $2.5 million in interest income (net of inter-entity eliminations), related to this loan, respectively. The loan bore interest at a rate of LIBOR plus 275 basis points.

International Joint Venture Investments

            We conduct our international operations through joint venture arrangements and account for all of our international joint venture investments using the equity method of accounting.

            European Joint Ventures.    At December 31, 2011, we had a 49% ownership interest in GCI. On January 9, 2012, we sold our entire ownership interest in GCI to our venture partner, Auchan S.A. The aggregate cash we received was $375.8 million and we recognized a gain on the sale of $28.8 million. Our investment carrying value included $39.5 million of accumulated losses related to currency translation and net investment hedge accumulated balances which had been recorded in accumulated other comprehensive income (loss).

            On March 14, 2012, we acquired a 28.7% equity stake in Klépierre for approximately $2.0 billion. At March 31, 2012, the carrying value of our investment including excess investment was $2.0 billion, including all related components of accumulated other comprehensive income (loss). At March 31, 2012, we owned 54,430,000 shares of Klépierre, which had a quoted market price of $34.69 per share. We account for our investment in Klépierre under the equity method as we have determined we have significant influence over its operations. Our share of the results of Klépierre during our ownership period was immaterial.

            Asian Joint Ventures.    We conduct our international Premium Outlet operations in Japan through a joint venture with Mitsubishi Estate Co., Ltd. We have a 40% ownership interest in this joint venture. The carrying amount of our investment in this joint venture was $337.6 million and $349.5 million as of March 31, 2012 and December 31, 2011, respectively, including all related components of accumulated other comprehensive income (loss). We conduct our international Premium Outlet operations in South Korea through a joint venture with Shinsegae International Co. We have a 50% ownership interest in this joint venture. The carrying amount of our investment in this joint venture was $48.4 million and $43.8 million as of March 31, 2012 and December 31, 2011, respectively, including all related components of accumulated other comprehensive income (loss).

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Summary Financial Information

            A summary of our investments in joint ventures and share of income from our joint ventures, excluding Klépierre, follows. The statements of operations include amounts related to our investment in GCI, which was sold on January 9, 2012. In addition, we acquired additional controlling interests in The Plaza at King of Prussia and The Court at King of Prussia, or collectively, King of Prussia, on August 25, 2011 and nine properties in the Mills transaction on March 22, 2012. These previously unconsolidated properties are now consolidated properties as of the acquisition dates. Additionally, on December 31, 2011, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner. The results of operations are classified as (loss)/income from discontinued joint venture interests in the accompanying joint venture statements of operations. Balance sheet information for the joint ventures is as follows:

	March 31, 2012		December 31, 2011
BALANCE SHEETS
Assets:
Investment properties, at cost	$	14,161,851	$	20,481,657
Less — accumulated depreciation		4,588,199		5,264,565
		9,573,652		15,217,092
Cash and cash equivalents		530,886		806,895
Tenant receivables and accrued revenue, net		190,922		359,208
Investment in unconsolidated entities, at equity		40,171		133,576
Deferred costs and other assets		364,255		526,101
Total assets	$	10,699,886	$	17,042,872
Liabilities and Partners' Deficit:
Mortgages and other indebtedness	$	11,468,736	$	15,582,321
Accounts payable, accrued expenses, intangibles, and deferred revenue		528,648		775,733
Other liabilities		275,768		981,711
Total liabilities		12,273,152		17,339,765
Preferred units		67,450		67,450
Partners' deficit		(1,640,716)		(364,343)
Total liabilities and partners' deficit	$	10,699,886	$	17,042,872
Our Share of:
Partners' deficit	$	(787,451)	$	(32,000)
Add: Excess Investment		2,007,617		714,515
Our net Investment in Unconsolidated Entities, at equity	$	1,220,166	$	682,515

            "Excess Investment" represents the unamortized difference of our investment over our share of the equity in the underlying net assets of the joint ventures acquired. We amortize excess investment over the life of the related properties, typically no greater than 40 years, and the amortization is included in the reported amount of income from unconsolidated entities.

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	For the Three Months Ended March 31,
	2012		2011
STATEMENTS OF OPERATIONS
Revenue:
Minimum rent	$	368,666	$	352,635
Overage rent		48,694		30,227
Tenant reimbursements		172,093		165,620
Other income		52,962		31,661
Total revenue		642,415		580,143
Operating Expenses:
Property operating		118,119		111,562
Depreciation and amortization		138,056		131,730
Real estate taxes		48,333		45,853
Repairs and maintenance		14,971		16,770
Advertising and promotion		15,456		13,472
Provision for credit losses		982		804
Other		53,642		29,215
Total operating expenses		389,559		349,406
Operating Income		252,856		230,737
Interest expense		(159,902)		(150,516)
(Loss) income from unconsolidated entities		(315)		173
Net Income from Continuing Operations		92,639		80,394
(Loss)/income from discontinued joint venture interests		(7,690)		318
Net Income	$	84,949	$	80,712
Third-Party Investors' Share of Net Income	$	40,012	$	50,014
Our Share of Net Income		44,937		30,698
Amortization of Excess Investment		(14,584)		(12,077)
Income from Unconsolidated Entities	$	30,353	$	18,621

6.         Debt

Unsecured Debt

            At March 31, 2012, our unsecured debt consisted of $12.3 billion of senior unsecured notes of the Operating Partnership, $160.0 million outstanding on an unsecured term loan, or Term Loan, and $1.9 billion outstanding under an unsecured revolving credit facility, or Credit Facility. The March 31, 2012 balance included $270.7 million (U.S. dollar equivalent) of Yen-denominated borrowings and $1.0 billion (U.S. dollar equivalent) of Euro-denominated borrowings which are designated as net investment hedges of our international investments. On March 31, 2012, we had available borrowing capacity of approximately $2.0 billion under the Credit Facility and $740.0 million of borrowing capacity under the Term Loan. The maximum outstanding balance of the Credit Facility during the three months ended March 31, 2012 was $3.1 billion and the weighted average outstanding balance on the Credit Facility was approximately $1.3 billion. Letters of credit of approximately $36.0 million were outstanding under the Credit Facility as of March 31, 2012.

            The Credit Facility provides an initial borrowing capacity of $4.0 billion which can be increased at our option to $5.0 billion during its term. The Credit Facility will initially mature on October 30, 2015 and can be extended for an additional year at our sole option. The base interest rate on the Credit Facility is LIBOR plus 100 basis points with an additional facility fee of 15 basis points. In addition, the Credit Facility provides for a money market competitive bid

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option program that allows us to hold auctions to achieve lower pricing for short-term borrowings. The Credit Facility also includes a $2.0 billion multi-currency tranche.

            On March 13, 2012, the Operating Partnership issued $600.0 million of senior unsecured notes at a fixed interest rate of 2.15% with a maturity date of September 2017, $600.0 million of senior unsecured notes at a fixed interest rate of 3.375% with a maturity date of March 2022, and $550.0 million of senior unsecured notes at a fixed interest rate of 4.75% with a maturity date of March 2042. Proceeds from the unsecured notes offerings were used to fund a portion of the cost of the acquisition of our equity stake in Klépierre and the Mills transaction.

            During the three months ended March 31, 2012, we redeemed at par $74.2 million of senior unsecured notes with a fixed rate of 5.75%.

            On November 1, 2011, we entered into a Term Loan providing a $900.0 million borrowing capacity. The Term Loan will initially mature on July 30, 2013 and can be extended for an additional year at our sole option. The base interest rate on the Term Loan is LIBOR plus 100 basis points. We drew $160.0 million on the Term Loan in the first quarter of 2012.

Secured Debt

            Total secured indebtedness was $8.3 billion and $6.8 billion at March 31, 2012 and December 31, 2011, respectively. During the three months ended March 31, 2012, we repaid $237.8 million in mortgage loans with a weighted average interest rate of 2.36%, unencumbering six properties, and repaid our $735.0 million secured term loan.

            As a result of the acquisition of additional interests in properties in the Mills transaction in March 2012, as further discussed in Note 5, we consolidated nine properties encumbered by property-level mortgage debt totaling $2.6 billion. This property-level mortgage debt was previously presented as debt of our unconsolidated entities. We and our joint venture partner had equal ownership in these properties prior to the transaction.

Covenants

            Our unsecured debt contains financial covenants and other non-financial covenants. If we were to fail to comply with these covenants, after the expiration of the applicable cure periods, the debt maturity could be accelerated or other remedies could be sought by the lender including adjustments to the applicable interest rate. As of March 31, 2012, we are in compliance with all covenants of our unsecured debt.

            At March 31, 2012, we or our subsidiaries are the borrowers under 91 non-recourse mortgage notes secured by mortgages on 91 properties, including 8 separate pools of cross-defaulted and cross-collateralized mortgages encumbering a total of 38 properties. Under these cross-default provisions, a default under any mortgage included in the cross-defaulted pool may constitute a default under all mortgages within that pool and may lead to acceleration of the indebtedness due on each property within the pool. Certain of our secured debt contain financial and other non-financial covenants which are specific to the properties which serve as collateral for that debt. If the borrower fails to comply with these covenants, the lender could accelerate the debt and enforce its right against their collateral. At March 31, 2012, the applicable borrowers under these non-recourse mortgage notes were in compliance with all covenants where non-compliance individually, or giving effect to applicable cross-default provisions in the aggregate, could have a material adverse effect on our financial condition, results of operations or cash flows.

Fair Value of Debt

            The carrying value of our variable-rate mortgages and other loans approximates their fair values. We estimate the fair values of consolidated fixed-rate mortgages using cash flows discounted at current borrowing rates and other indebtedness using cash flows discounted at current market rates. We estimate the fair values of consolidated fixed-rate unsecured notes using quoted market prices, or, if no quoted market prices are available, we use quoted market prices for securities with similar terms and maturities. The book value of our consolidated fixed-rate mortgages and other indebtedness was $20.0 billion and $15.9 billion as of March 31, 2012 and December 31, 2011, respectively.

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The fair values of these financial instruments and the related discount rate assumptions as of March 31, 2012 and December 31, 2011 are summarized as follows:

	March 31, 2012		December 31, 2011
Fair value of fixed-rate mortgages and other indebtedness	$	21,894	$	17,905
Weighted average discount rates assumed in calculation of fair value for fixed-rate mortgages		3.73%		3.60%

7.         Equity

            During the first three months of 2012, we issued 90,465 shares of common stock to 11 limited partners in exchange for an equal number of units.

            On March 14, 2012, we issued 9,137,500 shares of common stock in a public offering at a price of $137.00 per share. Proceeds of $1.2 billion from the offering, net of issue costs were used to fund a portion of the acquisition of our equity stake in Klépierre and the Mills transaction.

Stock Based Compensation

            The Compensation Committee of our Board of Directors, or the Compensation Committee, awarded 12,034 shares of restricted stock to employees on March 5, 2012 and March 14, 2012 under The Simon Property Group, L.P. 1998 Stock Incentive Plan, or the Plan, at a fair market value of $138.41 per share and $141.12 per share, respectively. The fair market value of the restricted stock awarded on March 5, 2012 and March 14, 2012 is being recognized as expense over the three-year vesting service period.

            On March 16, 2010, the Compensation Committee of our Board approved three long-term incentive performance programs, or the 2010 LTIP programs, for certain senior executive officers. Awards under the 2010 LTIP programs take the form of LTIP units, a form of limited partnership interest issued by the Operating Partnership. During the performance period, participants are entitled to receive on the LTIP units awarded to them distributions equal to 10% of the regular quarterly distributions paid on a unit of the Operating Partnership. As a result, we account for these LTIP units as participating securities under the two-class method of computing earnings per share. Awarded LTIP units will be considered earned, in whole or in part, depending upon the extent to which the applicable total shareholder return, or TSR, benchmarks, as defined, are achieved during the performance period and, once earned, will become the equivalent of units after a two year service-based vesting period, beginning after the end of the performance period. Awarded LTIP units not earned are forfeited.

            The 2010 LTIP programs have one, two and three year performance periods, which end on December 31, 2010, 2011 and 2012, respectively. During July 2011, the Compensation Committee approved a three-year long-term incentive performance program, or the 2011-2013 LTIP program, and awarded LTIP units to certain senior executive officers. The 2011-2013 LTIP program has a three year performance period ending on December 31, 2013. During March 2012, the Compensation Committee approved a three-year long-term incentive performance program, or the 2012-2014 LTIP program, and awarded LTIP units to certain senior executive officers. The 2012-2014 LTIP program has a three year performance period ending December 31, 2014. After the end of each performance period, any earned LTIP units will then be subject to service-based vesting over a period of two years. One-half of the earned LTIP units will vest on January 1 of each of the second and third years following the end of the applicable performance period, subject to the participant maintaining employment with us through those dates.

            The 2010 LTIP program awards have an aggregate grant date fair value, adjusted for estimated forfeitures, of $7.2 million for the one-year program, $14.8 million for the two-year program and $23.0 million for the three-year program. The 2011-2013 LTIP program awards have an aggregate grant date fair value of $35.0 million, adjusted for estimated forfeitures. The 2012-2014 LTIP program awards have an aggregate grant date fair value of $35.0 million, adjusted for estimated forfeitures. Grant date fair values were estimated based upon the results of a Monte Carlo model, and the resulting expense will be recorded regardless of whether the TSR benchmarks are achieved. The grant date fair values are being amortized into expense over the period from the grant date to the date at which the awards, if any, become vested. In 2011, the Compensation Committee determined that 133,673 LTIP units were earned under the one-year 2010 LTIP program and, pursuant to the award agreements, will vest in two equal installments in 2012 and 2013. In the first quarter of 2012, the Compensation Committee determined that 337,006 LTIP units were earned

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under the two-year 2010 LTIP program and, pursuant to the award agreements, will vest in two equal installments in 2013 and 2014.

            On July 6, 2011, in connection with the execution of an employment agreement, the Compensation Committee granted David Simon, our Chairman and CEO, a retention award in the form of 1,000,000 LTIP units. The award vests in one-third increments on July 5^th of 2017, 2018 and 2019, subject to continued employment. The grant date fair value of the retention award was $120.3 million which is being recognized as expense over the eight-year term of his employment agreement on a straight-line basis.

Changes in Equity

            The following table provides a reconciliation of the beginning and ending carrying amounts of total equity, equity attributable to common stockholders and equity attributable to noncontrolling interests:

	Preferred Stock		Common Stock		Accumulated Other Comprehensive Income (Loss)		Capital in Excess of Par Value		Accumulated Deficit		Common Stock Held in Treasury		Noncontrolling interests			Total Equity
January 1, 2012	$	45,047	$	30	$	(94,263)	$	8,103,133	$	(3,251,740)	$	(152,541)	$	894,622		$	5,544,288
Exchange of limited partner units for common shares								1,418						(1,418	)		—
Public offering of common stock				1				1,214,282									1,214,283
Issuance of limited partner units																	—
Other		(82)						1,370		(136)		1,705		10,368			13,225
Purchase of noncontrolling interest								(63,226)						58,559			(4,667)
Adjustment to limited partners' interest from increased ownership in the Operating Partnership								(163,845)						163,845			—
Distributions to common stockholders and limited partners, excluding Operating Partnership preferred interests										(280,034)				(57,907	)		(337,941)
Distributions to other noncontrolling interest partners														(191	)		(191)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity						70,543				646,244				147,750			864,537
March 31, 2012	$	44,965	$	31	$	(23,720)	$	9,093,132	$	(2,885,666)	$	(150,836)	$	1,215,628		$	7,293,534

8.         Commitments and Contingencies

Litigation

            We are involved from time-to-time in various legal proceedings that arise in the ordinary course of our business, including, but not limited to commercial disputes, environmental matters, and litigation in connection with

17

transactions including acquisitions and divestitures. We believe that such litigation, claims and administrative proceedings will not have a material adverse impact on our financial position or our results of operations. We record a liability when a loss is considered probable and the amount can be reasonably estimated.

            In May 2010, Opry Mills sustained significant flood damage. Insurance proceeds of $50 million have been funded by the insurers and remediation work has been completed. The property was re-opened March 29, 2012. The excess insurance carriers (those providing coverage above $50 million) have denied the claim under the policy for additional proceeds (of up to $150 million) to pay further amounts for restoration costs and business interruption losses. We and our lenders are continuing our efforts through pending litigation to recover our losses under the excess insurance policies for Opry Mills and we believe recovery is probable, but no assurances can be made that our efforts to recover these funds will be successful.

Guarantees of Indebtedness

            Joint venture debt is the liability of the joint venture and is typically secured by the joint venture property, which is non-recourse to us. As of March 31, 2012 and December 31, 2011, the Operating Partnership guaranteed joint venture related mortgage or other indebtedness of $113.4 million and $30.2 million, respectively. Mortgages guaranteed by us are secured by the property of the joint venture and that property could be sold in order to satisfy the outstanding obligation.

9.         Real Estate Acquisitions and Dispositions

            On March 22, 2012, as part of the Mills transaction discussed in Note 5, we acquired additional interests in 26 of our joint venture properties in a transaction valued at approximately $1.5 billion.

            On March 14, 2012, as discussed in Note 5, we acquired a 28.7% equity stake in Klépierre for approximately $2.0 billion, including the capitalization of acquisition costs.

            On January 9, 2012, as discussed in Note 5, we sold our entire ownership interest in GCI to our venture partner, Auchan S.A.

            On January 6, 2012, as discussed in Note 5, we purchased an additional 25% interest in Del Amo Fashion Center.

            During the first quarter of 2012, we sold one of our other retail properties with a carrying value of $115.0 million for nominal consideration and the assumption of the related mortgage debt of $115.0 million by the acquirer.

            On December 31, 2011, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner. As a result, we have a 100% interest in and now consolidate the six properties we received in the distribution. The distribution resulted in a remeasurement of the distributed assets to estimated fair value and a corresponding non-cash gain of approximately $168.3 million in the fourth quarter of 2011 representing the estimated fair value of the net assets received in excess of the carrying value of our interest in the joint venture portfolio. The resulting gain and the asset and liability fair value allocation were recorded based on preliminary portfolio fair value estimates at the date of distribution and will be finalized during 2012.

            On August 25, 2011, we acquired additional controlling interests of approximately 83.75% in King of Prussia thereby increasing our ownership interest to 96.1%. The property is subject to a $160.1 million mortgage. The consolidation of this previously unconsolidated property resulted in a remeasurement of our previously held interest to fair value and a corresponding non-cash gain of $82.9 million in the third quarter of 2011.

            We expense acquisition and potential acquisition costs related to business combinations and disposition related costs as they are incurred. We incurred a minimal amount of transaction expenses during the three months ended March 31, 2012 and 2011.

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Item 2.    Management's Discussion and Analysis of Financial Condition and Results of Operations

            You should read the following discussion in conjunction with the financial statements and notes thereto included in this report.

Overview

            Simon Property Group, Inc., or Simon Property, is a Delaware corporation that operates as a self-administered and self-managed real estate investment trust, or REIT, under the Internal Revenue Code. To qualify as a REIT, among other things, a company must distribute at least 90% of its taxable income to its stockholders annually. Taxes are paid by stockholders on dividends received and any capital gains distributed. Most states also follow this federal treatment and do not require REITs to pay state income tax. Simon Property Group, L.P., or the Operating Partnership, is a majority-owned partnership subsidiary that owns all of our real estate properties and other assets. In this discussion, the terms "we", "us" and "our" refer to Simon Property, the Operating Partnership, and its subsidiaries.

            We own, develop and manage retail real estate properties, which consist primarily of regional malls, Premium Outlets®, The Mills®, and community/lifestyle centers. As of March 31, 2012, we owned or held an interest in 325 income-producing properties in the United States, which consisted of 161 regional malls, 58 Premium Outlets, 70 community/lifestyle centers, 13 properties in the Mills portfolio, and 23 other shopping centers or outlet centers in 41 states and Puerto Rico. Internationally, as of March 31, 2012, we had ownership interests in eight Premium Outlets in Japan, two Premium Outlets in South Korea, one Premium Outlet in Mexico, and one Premium Outlet in Malaysia. Additionally, on March 14, 2012, we purchased a 28.7% equity stake in Klépierre, a publicly traded, Paris-based real estate company, which owns, or has an interest in, approximately 271 shopping centers located in 13 countries in Europe.

            We generate the majority of our revenues from leases with retail tenants including:

•

base minimum rents,

•

overage and percentage rents based on tenants' sales volume, and

•

recoveries of substantially all of our recoverable expenditures, which consist of property operating, real estate taxes, repair and maintenance, and advertising and promotional expenditures.

            Revenues of our management company, after intercompany eliminations, consist primarily of management fees that are typically based upon the revenues of the property being managed.

            We invest in real estate properties to maximize total financial return which includes both operating cash flows and capital appreciation. We seek growth in earnings, funds from operations, or FFO, and cash flows by enhancing the profitability and operation of our properties and investments. We seek to accomplish this growth through the following:

•

attracting and retaining high quality tenants and utilizing economies of scale to reduce operating expenses,

•

expanding and re-tenanting existing highly productive locations at competitive rental rates,

•

selectively acquiring or increasing our interests in high quality real estate assets or portfolios of assets,

•

generating consumer traffic in our retail properties through marketing initiatives and strategic corporate alliances, and

•

selling selective non-core assets.

            We also grow by generating supplemental revenues from the following activities:

•

establishing our malls as leading market resource providers for retailers and other businesses and consumer-focused corporate alliances, including: payment systems (such as handling fees relating to the sales of bank-issued prepaid cards), national marketing alliances, static and digital media initiatives, business development, sponsorship, and events,

•

offering property operating services to our tenants and others, including waste handling and facility services, and the provision of energy services,

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•

selling or leasing land adjacent to our shopping center properties, commonly referred to as "outlots" or "outparcels," and

•

generating interest income on cash deposits and investments in loans, including those made to related entities.

            We focus on high quality real estate across the retail real estate spectrum. We expand or renovate properties to enhance profitability and market share of existing assets when we believe the investment of our capital meets our risk-reward criteria. We selectively develop new properties in metropolitan areas that exhibit strong population and economic growth.

            We routinely review and evaluate acquisition opportunities based on their ability to complement our portfolio. Our international strategy includes partnering with established real estate companies and financing international investments with local currency to minimize foreign exchange risk.

            To support our growth, we employ a three-fold capital strategy:

•

provide the capital necessary to fund growth,

•

maintain sufficient flexibility to access capital in many forms, both public and private, and

•

manage our overall financial structure in a fashion that preserves our investment grade credit ratings.

Results Overview

            Diluted earnings per common share increased $1.57 during the first three months of 2012 to $2.18 from $0.61 for the same period last year. The increase in diluted earnings per share was primarily attributable to:

•

improved operating performance and core business fundamentals in 2012 and the impact of our acquisition and expansion activity, and

•

a 2012 gain due to the acquisition of a controlling interest, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net of $494.8 million, or $1.39 per diluted share, primarily driven by a gain of $488.7 million resulting from the remeasurement of our previously held interest to fair value for those properties where we now have a controlling interest.

            Core business fundamentals during the first three months of 2012 improved from the economic environment that existed during the first three months of 2011. Total sales per square foot, or psf, increased 11.2% from March 31, 2011 to $546 psf at March 31, 2012 for our portfolio of regional malls and Premium Outlets. Average base minimum rent increased 4.4% to $39.87 psf as of March 31, 2012, from $38.18 psf as of March 31, 2011. Releasing spreads remained positive as we were able to lease available square feet at higher rents than the expiring rental rates on the same space, resulting in a releasing spread (based on total tenant payments — base minimum rent plus common area maintenance) of $4.74 psf as of March 31, 2012, representing a 9.7% increase over expiring payments as of March 31, 2012. Ending occupancy was 93.6% as of March 31, 2012, as compared to 93.0% as of March 31, 2011, an increase of 60 basis points.

            Our effective overall borrowing rate at March 31, 2012 decreased 37 basis points to 5.19% as compared to 5.56% at March 31, 2011. This decrease was primarily due to a decrease in the effective overall borrowing rate on fixed rate debt of 42 basis points (5.62% at March 31, 2012 as compared to 6.04% at March 31, 2011) and a decrease in the effective overall borrowing rate on variable rate debt of 45 basis points (1.47% at March 31, 2012 as compared to 1.92% at March 31, 2011). At March 31, 2012, the weighted average years to maturity of our consolidated indebtedness was approximately 6.2 years as compared to approximately 5.7 years at December 31, 2011. Our financing activities for the three months ended March 31, 2012, included the repayment of $237.8 million in mortgage loans with a weighted average interest rate of 2.36% unencumbering six properties, the redemption of $74.2 million of senior unsecured notes with a fixed rate of 5.75% and the repayment of $735.0 million on a secured term loan. In addition, during the 2012 period, we issued $600.0 million of senior unsecured notes at a fixed interest rate of 2.15% with a maturity date of September 2017, $600.0 million of senior unsecured notes at a fixed interest rate of 3.375% with a maturity date of March 2022 and $550.0 million of senior unsecured notes at a fixed interest rate of 4.75% with a maturity date of March 2042. We also had net $1.0 billion (U.S. dollar equivalent) of Euro-denominated borrowings on our unsecured revolving credit facility, or Credit Facility, and $160.0 million of borrowings on our $900.0 million unsecured term loan, or Term Loan.

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United States Portfolio Data

            The portfolio data discussed in this overview includes the following key operating statistics: ending occupancy, average base minimum rent per square foot, and total sales per square foot for our domestic assets. We include acquired properties in this data beginning in the year of acquisition and remove properties sold in the year disposed. For comparative purposes, we separate the information related to community/lifestyle centers and The Mills from our other U.S. operations. We also do not include any properties located outside of the United States.

            The following table sets forth these key operating statistics for:

•

properties that are consolidated in our consolidated financial statements,

•

properties we account for under the equity method of accounting as joint ventures, and

•

the foregoing two categories of properties on a total portfolio basis.

	March 31, 2012		March 31, 2011(2)		%/basis point Change(1)
U.S. Regional Malls and Premium Outlets:
Ending Occupancy
Consolidated		93.6%		93.5%		+10 bps
Unconsolidated		93.5%		91.8%		+170 bps
Total Portfolio		93.6%		93.0%		+60 bps
Average Base Minimum Rent per Square Foot
Consolidated	$	37.86	$	36.63		3.4%
Unconsolidated	$	47.93	$	42.53		12.7%
Total Portfolio	$	39.87	$	38.18		4.4%
Total Sales per Square Foot
Consolidated	$	529	$	483		9.5%
Unconsolidated	$	630	$	523		20.5%
Total Portfolio	$	546	$	491		11.2%
The Mills:
Ending Occupancy		96.5%		93.7%		+280 bps
Average Base Minimum Rent per Square Foot	$	21.93	$	21.18		3.5%
Total Sales per Square Foot	$	491	$	446		10.1%
Community/Lifestyle Centers:
Ending Occupancy		93.1%		92.3%		+80 bps
Average Base Minimum Rent per Square Foot	$	13.78	$	13.40		2.8%

(1)

Percentages may not recalculate due to rounding. Percentage and basis point changes are representative of the change from the comparable prior period.

(2)

Prior year data has been restated as a result of the acquisition of additional interests in certain properties as discussed in Note 5 to the condensed notes to consolidated financial statements.

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            Ending Occupancy Levels and Average Base Minimum Rent per Square Foot.    Ending occupancy is the percentage of gross leasable area, or GLA, which is leased as of the last day of the reporting period. We include all company owned space except for regional mall anchors and regional mall majors in the calculation. Base minimum rent per square foot is the average base minimum rent charge in effect for the reporting period for all tenants that would qualify to be included in ending occupancy.

            Total Sales per Square Foot.    Total sales include total reported retail tenant sales at owned GLA (for mall and freestanding stores with less than 10,000 square feet) in the regional malls and all reporting tenants at the Premium Outlets and the Mills. Retail sales at owned GLA affect revenue and profitability levels because sales determine the amount of minimum rent that can be charged, the percentage rent realized, and the recoverable expenses (common area maintenance, real estate taxes, etc.) that tenants can afford to pay.

International Property Data

            The following are selected key operating statistics for our Premium Outlets in Japan. The information used to prepare these statistics has been supplied by the managing venture partner.

	March 31, 2012		March 31, 2011		%/basis point Change
Ending Occupancy		99.9%		99.8%		+10 bps
Comparable Sales per Square Foot	¥	89,875	¥	87,011		3.3%
Average Base Minimum Rent per Square Foot	¥	4,930	¥	4,808		2.5%

Results of Operations

            In addition to the activity discussed above in the "Results Overview" section, the following acquisitions, openings, and dispositions of consolidated properties affected our consolidated results from continuing operations in the comparative periods:

•

On March 29, 2012, Opry Mills re-opened after completion of the restoration of the property following the significant flood damage which occurred in May 2010.

•

On March 22, 2012, we acquired additional interests in 26 joint venture properties, or the Mills transaction, from our joint venture partner. Of these 26 properties, nine became consolidated properties at the acquisition date.

•

During the first three months of 2012, we disposed of one other retail property.

•

During 2011, we disposed of three of our other retail properties and one of our regional malls.

•

On December 31, 2011, as discussed in Note 9 of the condensed notes to consolidated financial statements, a 50% joint venture distributed a portfolio of properties to us and our joint venture partner. We now consolidate those properties we received in the distribution.

•

On August 25, 2011, we acquired additional interests in The Plaza at King of Prussia and The Court at King of Prussia, or, collectively, King of Prussia, a 2.4 million square foot regional mall in the Philadelphia market, which had previously been accounted for under the equity method. We now have a controlling interest in this property and its results are consolidated as of the acquisition date.

•

On July 19, 2011, we acquired a 100% ownership interest in ABQ Uptown, a 222,000 square foot lifestyle center located in Albuquerque, New Mexico.

•

On June 28, 2011, we sold Prime Outlets — Jeffersonville.

            In addition to the activities discussed above and in "Results Overview," the following acquisitions, dispositions and openings of joint venture properties affected our income from unconsolidated entities in the comparative periods:

•

As discussed above, on March 22, 2012, we acquired additional interests in 26 joint venture properties. Of these 26 assets, 16 remained unconsolidated.

•

On March 14, 2012, we acquired a 28.7% equity stake in Klépierre.

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•

On January 9, 2012, we sold our entire ownership interest in Gallerie Commerciali Italia, or GCI, which owns 45 properties located in Italy to our venture partner, Auchan S.A.

•

On January 6, 2012, we acquired an additional 25% interest in Del Amo Fashion Center.

•

During 2011, we disposed of one of our regional malls.

•

On December 2, 2011, we and our partner, Genting Berhad, opened Johor Premium Outlets, a 173,000 square foot outlet center in Johor, Malaysia.

•

During the third quarter of 2011, we contributed a wholly-owned property to a joint venture which holds our interests in nine unconsolidated properties. The transaction effectively exchanged a portion of our interest in this previously wholly-owned property for increased ownership interests in the nine unconsolidated properties.

•

On March 17, 2011, we and our partner, Shinsegae International Co., opened Paju Premium Outlets, a 328,000 square foot outlet center in Paju, South Korea.

            For the purposes of the following comparison between the three months ended March 31, 2012 and 2011, the above transactions are referred to as the property transactions. In the following discussions of our results of operations, "comparable" refers to properties open and operating throughout the periods in both 2012 and 2011.

Three Months Ended March 31, 2012 vs. Three Months Ended March 31, 2011

            Minimum rents increased $57.8 million during the 2012 period, of which the property transactions accounted for $35.6 million of the increase. Comparable rents increased $22.2 million, or 3.6%. The increase in comparable rents was primarily attributable to a $22.1 million increase in base minimum rents. Overage rents increased $10.5 million, or 61.5%, as a result of an increase in tenant sales for the period compared to the prior period.

            Tenant reimbursements increased $25.0 million, due to a $17.7 million increase attributable to the property transactions and a $7.3 million, or 2.7%, increase in the comparable properties primarily due to annual increases related to common area maintenance reimbursements.

            Total other income increased $4.0 million, principally as a result of a $7.6 million increase in financing and other fee revenue earned from joint ventures net of eliminations, partially offset by a decrease in interest income of $3.9 million primarily related to a reduction in the aggregate amount of loans held for investment.

            Property operating expense increased $5.2 million primarily related to a $7.3 million increase attributable to the property transactions partially offset by a $2.1 million decrease in comparable property activity due primarily to a mild winter.

            Depreciation and amortization expense increased $18.8 million primarily due to the additional depreciable assets related to the property transactions.

            Real estate tax expense increased $5.4 million primarily related to the property transactions.

            Repairs and maintenance expense decreased $5.2 million primarily due to decreased snow removal costs as compared to the prior period, offset partially by the property transactions.

            Home and regional office expense increased $3.8 million primarily due to increased long-term incentive compensation costs.

            General and administrative expense increased $6.2 million primarily as a result of increased performance compensation costs.

            Interest expense increased $10.0 million primarily related to the property transactions. Increased interest expense from borrowings on the Euro tranche of the Credit Facility and the issuance of unsecured notes in the fourth quarter of 2011 and the first quarter of 2012 were partially offset by the repayment of mortgages at six properties, payoff of our $735.0 million secured term loan, and payoff of $542.5 million of unsecured notes in 2011 and $74.2 million of unsecured notes in 2012.

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            Income from unconsolidated properties increased $11.7 million as result of the property transactions, primarily our increased ownership in the joint venture properties acquired as part of the Mills transaction, and favorable results of operations from the portfolio of joint venture properties.

            During the first quarter of 2012, we disposed of our interest in GCI for a gain of $28.8 million and acquired a controlling interest in nine properties previously accounted for under the equity method in the Mills transaction which resulted in the recognition of a non-cash gain of $488.7 million. In addition, we recorded an other-than-temporary impairment charge of $22.4 million on our remaining investment in SPG-FCM Ventures, LLC, or SPG-FCM, which holds our investment in The Mills Limited Partnership, or TMLP, representing the excess of carrying value over the estimated fair value.

            Net income attributable to noncontrolling interests increased $96.2 million primarily due to an increase in the income of the Operating Partnership.

Liquidity and Capital Resources

            Because we generate revenues primarily from long-term leases, our financing strategy relies primarily on long-term fixed rate debt. We manage our floating rate debt to be at or below 15-25% of total outstanding indebtedness by negotiating interest rates for each financing or refinancing based on current market conditions and entering into floating rate to fixed rate interest rate swaps. Floating rate debt currently comprises approximately 10.3% of our total consolidated debt at March 31, 2012. We also enter into interest rate protection agreements to assist in managing our interest rate risk. We derive most of our liquidity from leases that generate positive net cash flow from operations and distributions of capital from unconsolidated entities that totaled $649.7 million during the three months ended March 31, 2012. In addition, the Credit Facility provides an alternative source of liquidity as our cash needs vary from time to time.

            Our balance of cash and cash equivalents increased $81.9 million during the first three months of 2012 to $880.5 million as of March 31, 2012 as further discussed under "Cash Flows" below.

            On March 31, 2012, we had available borrowing capacity of approximately $2.0 billion under the Credit Facility, net of outstanding borrowings of $1.9 billion and letters of credit of $36.0 million, and $740.0 million of borrowing capacity under the Term Loan. For the three months ended March 31, 2012, the maximum amount outstanding under the Credit Facility was $3.1 billion and the weighted average amount outstanding was approximately $1.3 billion. The weighted average interest rate was 1.29% for the three months ended March 31, 2012.

            We and the Operating Partnership have historically had access to public equity and long term unsecured debt markets and access to private equity from institutional investors at the property level.

            Our business model requires us to regularly access the debt markets to raise funds for acquisition, development and redevelopment activity, and to refinance maturing debt. We may also, from time to time, access the equity capital markets to accomplish our business objectives. We believe we have sufficient cash on hand and availability under the Credit Facility to address our debt maturities and capital needs through 2012.

Loan to SPG-FCM

            As discussed in Note 5 to the condensed notes to consolidated financial statements, the loan to SPG-FCM was extinguished in the Mills transaction. During the three month periods ended March 31, 2012 and 2011, we recorded approximately $2.0 million and $2.5 million in interest income (net of inter-entity eliminations), related to this loan, respectively.

Cash Flows

            Our net cash flow from operating activities and distributions of capital from unconsolidated entities for the three months ended March 31, 2012 totaled $649.7 million. In addition, we received net proceeds from our debt financing and repayment activities of $1.8 billion in 2012. These activities are further discussed below under "Financing and Debt." During the 2012 period, we or the Operating Partnership also:

•

issued 9,137,500 shares of common stock in a public offering for $1.2 billion, net of issue costs,

•

funded the acquisition of an additional interest in one property, the 28.7% equity stake in Klépierre and additional interests in 26 joint venture properties in the Mills transaction for $3.62 billion,

24

•

received proceeds of $375.8 million from the sale of our interest in GCI,

•

paid stockholder dividends and unitholder distributions totaling $337.1 million,

•

paid preferred stock dividends and preferred unit distributions totaling $1.3 million,

•

funded consolidated capital expenditures of $124.2 million (includes development and other costs of $42.9 million, renovation and expansion costs of $43.5 million, and tenant costs and other operational capital expenditures of $37.8 million), and

•

funded investments in unconsolidated entities of $61.7 million.

            In general, we anticipate that cash generated from operations will be sufficient to meet operating expenses, monthly debt service, recurring capital expenditures, and distributions to stockholders necessary to maintain our REIT qualification on a long-term basis. In addition, we expect to be able to obtain capital for nonrecurring capital expenditures, such as acquisitions, major building renovations and expansions, as well as for scheduled principal maturities on outstanding indebtedness, from:

•

excess cash generated from operating performance and working capital reserves,

•

borrowings on the Credit Facility,

•

additional secured or unsecured debt financing, or

•

additional equity raised in the public or private markets.

            We expect to generate positive cash flow from operations in 2012, and we consider these projected cash flows in our sources and uses of cash. These cash flows are principally derived from rents paid by our retail tenants, many of whom are still recovering from the recent economic downturn. A significant deterioration in projected cash flows from operations could cause us to increase our reliance on available funds from the Credit Facility, curtail planned capital expenditures, or seek other additional sources of financing as discussed above.

Financing and Debt

Unsecured Debt

            At March 31, 2012, our unsecured debt consisted of $12.3 billion of senior unsecured notes of the Operating Partnership, $160.0 million outstanding on the Term Loan, and $1.9 billion outstanding under the Credit Facility. The March 31, 2012 balance under the Credit Facility included $270.7 million (U.S. dollar equivalent) of Yen-denominated borrowings and $1.0 billion (U.S. dollar equivalent) of Euro-denominated borrowings which are designated as net investment hedges of our international investments. On March 31, 2012, we had available borrowing capacity of approximately $2.0 billion under the Credit Facility. The maximum outstanding balance of the Credit Facility during the three months ended March 31, 2012 was $3.1 billion and the weighted average outstanding balance on the Credit Facility was approximately $1.3 billion. Letters of credit of approximately $36.0 million were outstanding under the Credit Facility as of March 31, 2012.

            The Credit Facility provides an initial borrowing capacity of $4.0 billion which can be increased at our option to $5.0 billion during its term. The Credit Facility will initially mature on October 30, 2015 and can be extended for an additional year at our sole option. The base interest rate on the Credit Facility is LIBOR plus 100 basis points with an additional facility fee of 15 basis points. In addition, the Credit Facility provides for a money market competitive bid option program that allows us to hold auctions to achieve lower pricing for short-term borrowings. The Credit Facility also includes a $2.0 billion multi-currency tranche.

            On November 1, 2011, we entered into a Term Loan providing a $900.0 million borrowing capacity. The Term Loan will initially mature on July 30, 2013 and can be extended for an additional year at our sole option. The base interest rate on the Term Loan is LIBOR plus 100 basis points. We drew $160.0 million on the Term Loan in the first quarter of 2012.

            On March 13, 2012, the Operating Partnership issued $600.0 million of senior unsecured notes at a fixed interest rate of 2.15% with a maturity date of September 2017, $600.0 million of senior unsecured notes at a fixed interest rate of 3.375% with a maturity date of March 2022, and $550.0 million of senior unsecured notes at a fixed interest rate of 4.75% with a maturity date of March 2042. Proceeds from the unsecured notes offerings were used to fund a portion of the cost of the acquisition of our equity stake in Klépierre and the Mills transaction.

            During the three months ended March 31, 2012, we redeemed at par $74.2 million of senior unsecured notes with a fixed rate of 5.75%.

25

Secured Debt

            Total secured indebtedness was $8.3 billion and $6.8 billion at March 31, 2012 and December 31, 2011, respectively. During the three months ended March 31, 2012, we repaid $237.8 million in mortgage loans with a weighted average interest rate of 2.36%, unencumbering six properties, and repaid our $735.0 million secured term loan.

            As a result of the acquisition of additional interests in the joint venture properties in the Mills transaction in March 2012, as further discussed in Note 5 to the condensed consolidated notes to financial statements, we consolidated nine properties encumbered by property-level mortgage debt totaling $2.6 billion. This property-level mortgage debt was previously presented as debt of our unconsolidated entities. We and our joint venture partner had equal ownership in these properties prior to the transaction.

Covenants

            Our unsecured debt contains financial covenants and other non-financial covenants. If we were to fail to comply with these covenants, after the expiration of the applicable cure periods, the debt maturity could be accelerated or other remedies could be sought by the lender including adjustments to the applicable interest rate. As of March 31, 2012, we are in compliance with all covenants of our unsecured debt.

            At March 31, 2012, we or our subsidiaries are the borrowers under 91 non-recourse mortgage notes secured by mortgages on 91 properties, including 8 separate pools of cross-defaulted and cross-collateralized mortgages encumbering a total of 38 properties. Under these cross-default provisions, a default under any mortgage included in the cross-defaulted pool may constitute a default under all mortgages within that pool and may lead to acceleration of the indebtedness due on each property within the pool. Certain of our secured debt contain financial and other non-financial covenants which are specific to the properties which serve as collateral for that debt. If the borrower fails to comply with these covenants, the lender could accelerate the debt and enforce its right against their collateral. At March 31, 2012, the applicable borrowers under these non-recourse mortgage notes were in compliance with all covenants where non-compliance could individually, or giving effect to applicable cross-default provisions, have a material adverse effect on our financial condition, results of operations or cash flows.

Summary of Financing

            Our consolidated debt, adjusted to reflect outstanding derivative instruments, and the effective weighted average interest rates as of March 31, 2012 and December 31, 2011, consisted of the following (dollars in thousands):

Debt Subject to	Adjusted Balance as of March 31, 2012		Effective Weighted Average Interest Rate			Adjusted Balance as of December 31, 2011		Effective Weighted Average Interest Rate
Fixed Rate	$	20,461,418		5.62	%	$	16,407,374		5.83	%
Variable Rate		2,339,144		1.47	%		2,039,066		1.45	%
	$	22,800,562		5.19	%	$	18,446,440		5.35	%

            As of March 31, 2012, we had $485.2 million of notional amount fixed rate swap agreements that have a weighted average fixed pay rate of 2.52% and a weighted average variable receive rate of 0.61%. As of March 31, 2012, the net effect of these agreements effectively converted $485.0 million of variable rate debt to fixed rate debt.

Contractual Obligations and Off-Balance Sheet Arrangements

            There have been no material changes to our outstanding capital expenditure and lease commitments previously disclosed in our 2011 Annual Report on Form 10-K.

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            In regards to long-term debt arrangements, the following table summarizes the material aspects of these future obligations on our consolidated indebtedness as of March 31, 2012, for the remainder of 2012 and subsequent years thereafter (dollars in thousands) assuming the obligations remain outstanding through initial maturities:

	2012		2013-2014		2015-2017		After 2017		Total
Long-Term Debt(1)	$	623,732	$	3,746,163	$	11,309,391	$	7,024,900	$	22,704,186
Interest Payments(2)	$	824,015	$	2,018,521	$	1,960,977	$	2,285,287	$	7,088,800

(1)

Represents principal maturities only and therefore, excludes net premiums of $96,376.

(2)

Variable rate interest payments are estimated based on the LIBOR rate at March 31, 2012.

            Our off-balance sheet arrangements consist primarily of our investments in joint ventures which are common in the real estate industry and are described in Note 5 of the condensed notes to consolidated financial statements. Our joint ventures typically fund their cash needs through secured debt financings obtained by and in the name of the joint venture entity. The joint venture debt is secured by a first mortgage, is without recourse to the joint venture partners, and does not represent a liability of the partners, except to the extent the partners or their affiliates expressly guarantee the joint venture debt. As of March 31, 2012, the Operating Partnership had guaranteed $113.4 million of joint venture related mortgage or other indebtedness. We may elect to fund cash needs of a joint venture through equity contributions (generally on a basis proportionate to our ownership interests), advances or partner loans, although such fundings are not required contractually or otherwise.

Acquisitions and Dispositions

            Buy-sell provisions are common in real estate partnership agreements. Most of our partners are institutional investors who have a history of direct investment in retail real estate. We or our partners in our joint venture properties may initiate these provisions (subject to any applicable lock up or similar restrictions). If we determine it is in our stockholders' best interests for us to purchase the joint venture interest and we believe we have adequate liquidity to execute the purchase without hindering our cash flows, then we may initiate these provisions or elect to buy. If we decide to sell any of our joint venture interests, we expect to use the net proceeds to reduce outstanding indebtedness or to reinvest in development, redevelopment, or expansion opportunities.

            Acquisitions.    On March 22, 2012, we acquired additional interests in 26 properties previously held in TMLP, from our joint venture partner. The transaction resulted in 16 of the properties remaining unconsolidated, the consolidation of nine previously unconsolidated properties and the purchase of the remaining noncontrolling interest in a previously consolidated property. The transaction was valued at $1.5 billion, which included repayment of the remaining $562.1 million balance on TMLP's senior loan facility and retirement of $100.0 million of TMLP's trust preferred securities. In connection with the transaction, our $558.4 million loan to SPG-FCM was extinguished on a non-cash basis. We consolidated approximately $2.6 billion in additional property-level mortgage debt in connection with this transaction. The transaction resulted in a remeasurement of our previously held interest in each of these properties to fair value and the recognition of a corresponding non-cash gain of approximately $488.7 million.

            On March 14, 2012, we acquired a 28.7% equity stake in Klépierre for approximately $2.0 billion.

            On January 6, 2012, SPG-FCM Ventures, LLC, or SPG-FCM, which holds our investment in the Mills Limited Partnership, or TMLP, distributed its interest in Del Amo Fashion Center to SPG-FCM's joint venture partners. We purchased our venture partner's 25% interest for $50.0 million, which increased our ownership in the property to 50%. As a part of the transaction, we and our venture partner each contributed $50.0 million to SPG-FCM which was used to pay down TMLP's senior loan and the loan we made to SPG-FCM, as discussed below.

            On December 31, 2011, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner. As a result, we have a 100% interest and now consolidate the six properties we received in the distribution. The distribution resulted in a remeasurement of the distributed assets to estimated fair value and a corresponding non-cash gain of approximately $168.3 million in the fourth quarter of 2011 representing the estimated fair value of the assets received in excess of the carrying value of our interest in the joint venture portfolio.

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            On August 25, 2011, we acquired additional controlling interests of approximately 83.75% in King of Prussia, thereby increasing our ownership interest to 96.1%. The property is subject to a $160.1 million mortgage. The consolidation of this previously unconsolidated property resulted in a remeasurement of our previously held interest to fair value and a corresponding non-cash gain of $82.9 million in the third quarter of 2011.

            Dispositions.    We continue to pursue the disposition of properties that no longer meet our strategic criteria or that are not a primary retail venue within their trade area.

            During the first quarter of 2012, we sold one of our other retail properties with a carrying value of $115.0 million for nominal consideration and the assumption of the related mortgage debt of $115.0 million by the acquirer.

            On January 9, 2012, we sold our entire ownership interest in GCI to our venture partner, Auchan S.A. The aggregate cash we received was $375.8 million and we recognized a gain on the sale of $28.8 million.

Development Activity

            New Domestic Development.    In March 2012, we began construction on Phoenix Premium Outlets located in Phoenix, Arizona. This new center, which is wholly owned by us, is expected to open in May of 2013. The estimated cost of this project is $70.7 million.

            In August 2011, we began construction on Tanger Outlets — Galveston located in Texas City, Texas. This new center is a joint venture with Tanger Factory Outlets Centers, Inc. in which we have a 50% interest. Our estimated share of the cost of this project is $32.2 million.

            During 2010, we began construction on Merrimack Premium Outlets located in Merrimack, New Hampshire. This new Premium Outlet, which is wholly owned by us, is scheduled to open on June 14, 2012. The estimated cost of this project is $144.1 million, and the carrying amount of the construction in progress as of March 31, 2012 was $113.6 million.

            Other than these projects, our share of other 2012 new developments is not significant.

            Domestic Expansions and Renovations.    We routinely incur costs related to construction for significant renovation and expansion projects at our properties. We also have reinstituted our redevelopment and expansion initiatives which we previously reduced given the downturn in the economy. Renovation and expansion projects are currently underway at 23 centers in the U.S. and more than 50 anchor and big box tenants are currently scheduled to open in 2012 and 2013. We expect our share of development costs for 2012 related to renovation or expansion initiatives to be approximately $800.0 million compared to approximately $265.0 million in 2011.

            We expect to fund these capital projects with cash flows from operations. Our estimated stabilized return on invested capital ranges between 8-12% for all of our new development, expansion and renovation projects.

            International Development Activity.    We typically reinvest net cash flow from our international joint ventures to fund future international development activity. We believe this strategy mitigates some of the risk of our initial investment and our exposure to changes in foreign currencies. We have also funded most of our foreign investments with local currency-denominated borrowings that act as a natural hedge against fluctuations in exchange rates. Currently, our consolidated net income exposure to changes in the volatility of the Euro, Yen, Won, and other foreign currencies is not material. We expect our share of international development costs for 2012 will be approximately $130.0 million at current FX rates, primarily funded through reinvested joint venture cash flow and construction loans.

            Rinku Premium Outlets Phase IV, a 103,000 square foot expansion to the Rinku Premium Outlet located in Osaka, Japan, is under construction and is expected to open in July 2012. Kobe-Sanda Premium Outlets Phase III, a 78,000 square foot expansion to the Kobe-Sanda Premium Outlets in Osaka, Japan, is under construction and is expected to open in December 2012. The net cost of these projects is expected to be JPY 6.2 billion, of which our share is approximately JPY 2.5 billion, or $30.1 million based on applicable YEN:USD exchange rates.

            In April 2012, construction began on Shisui Premium Outlets, a 234,000 square foot new development in Chiba, Japan, which is due to open in April 2013. The net cost of this project is expected to be JPY 9.2 billion, of which our share is approximately JPY 3.7 billion, or $44.4 million based on applicable YEN:USD exchange rates.

28

            In April 2012, construction began on Toronto Premium Outlets, a 358,000 square foot new development in Ontario, Canada, which is expected to open in August 2013. The net cost of this project is expected to be CAD 159.6 million, of which our share is approximately CAD 79.8 million, or $79.8 million based on applicable CAD:USD exchange rates.

            In 2012, construction began on Busan Premium Outlets, a 243,500 square foot new development in Busan, South Korea, which is due to open in September 2013. The net cost of this project is expected to be KRW 129.2 billion, of which our share is approximately KRW 64.6 billion, or $57 million based on applicable KRW:USD exchange rates.

            On March 1, 2012, we and our partner, Bailian Group, the largest retail conglomerate in China, announced the signing of a Memorandum of Understanding, or MOU, to jointly develop a Premium Outlet Center in Pudong, Shanghai, China. The MOU also provides the joint venture the opportunity to develop additional Premium Outlet Centers in mainland China.

            On April 9, 2012, we and our partner, BR Malls Participacoes S.A., signed a Joint Venture Agreement to develop and own Premium Outlet Centers in Brazil in which we would have a 50% interest. The first Premium Outlet is expected to be opened in the State of Sao Paulo in 2013.

Dividends

            We paid a common stock dividend of $0.95 per share in the first quarter of 2012. On April 27, 2012, we announced a common stock dividend of $1.00 per share payable on May 31, 2012 to stockholders of record on May 17, 2012. We must pay a minimum amount of dividends to maintain our status as a REIT. Our dividends typically exceed our net income generated in any given year primarily because of depreciation, which is a non-cash expense. Our future dividends and future distributions of the Operating Partnership will be determined by the Board of Directors based on actual results of operations, cash available for dividends and limited partner distributions, and what may be required to maintain our status as a REIT.

Forward-Looking Statements

            Certain statements made in this section or elsewhere in this report may be deemed "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Although we believe the expectations reflected in any forward-looking statements are based on reasonable assumptions, we can give no assurance that our expectations will be attained, and it is possible that our actual results may differ materially from those indicated by these forward-looking statements due to a variety of risks and uncertainties. Such factors include, but are not limited to: our ability to meet debt service requirements, the availability of financing, changes in our credit rating, changes in market rates of interest and foreign exchange rates for foreign currencies, the ability to hedge interest rate risk, risks associated with the acquisition, development and expansion of properties, general risks related to retail real estate, the liquidity of real estate investments, environmental liabilities, international, national, regional and local economic climates, changes in market rental rates, trends in the retail industry, relationships with anchor tenants, the inability to collect rent due to the bankruptcy or insolvency of tenants or otherwise, risks relating to joint venture properties, intensely competitive market environment in the retail industry, costs of common area maintenance, competitive market forces, risks related to international activities, insurance costs and coverage, terrorist activities, changes in economic and market conditions and maintenance of our status as a real estate investment trust. We discussed these and other risks and uncertainties under the heading "Risk Factors" in our most recent Annual Report on Form 10-K. We may update that discussion in our Quarterly Reports on Form 10-Q, but otherwise we undertake no duty or obligation to update or revise these forward-looking statements, whether as a result of new information, future developments, or otherwise.

Non-GAAP Financial Measure — Funds from Operations

            Industry practice is to evaluate real estate properties in part based on funds from operations, or FFO. We consider FFO to be a key measure of our operating performance that is not specifically defined by accounting principles generally accepted in the United States, or GAAP. We believe that FFO is helpful to investors because it is a widely recognized measure of the performance of REITs and provides a relevant basis for comparison among REITs. We also use this measure internally to measure the operating performance of our portfolio.

29

            We determine FFO based on the definition set forth by the National Association of Real Estate Investment Trusts, or NAREIT, as consolidated net income computed in accordance with GAAP:

•

excluding real estate related depreciation and amortization,

•

excluding gains and losses from extraordinary items and cumulative effects of accounting changes,

•

excluding gains and losses from the sales of previously depreciated retail operating properties,

•

excluding impairment charges of depreciable real estate,

•

plus the allocable portion of FFO of unconsolidated entities accounted for under the equity method of accounting based upon economic ownership interest, and

•

all determined on a consistent basis in accordance with GAAP.

            We have adopted NAREIT's clarification of the definition of FFO that requires us to include the effects of nonrecurring items not classified as extraordinary, cumulative effect of accounting changes, or a gain or loss resulting from the sale of, or any impairment charges related to, previously depreciated operating properties. We include in FFO gains and losses realized from the sale of land, outlot buildings, marketable and non-marketable securities, and investment holdings of non-retail real estate. However, you should understand that our computation of FFO might not be comparable to FFO reported by other REITs and that FFO:

•

does not represent cash flow from operations as defined by GAAP,

•

should not be considered as an alternative to consolidated net income determined in accordance with GAAP as a measure of operating performance, and

•

is not an alternative to cash flows as a measure of liquidity.

30

            The following schedule reconciles total FFO to consolidated net income and diluted net income per share to diluted FFO per share.

	For the Three Months Ended March 31,
	2012		2011
(in thousands)
Funds from Operations	$	648,652	$	570,643
Increase in FFO from prior period		13.7%		75.3%
Consolidated Net Income	$	781,829	$	219,666
Adjustments to Arrive at FFO:
Depreciation and amortization from consolidated properties		281,349		262,546
Our share of depreciation and amortization from unconsolidated entities		86,141		93,381
(Gain) loss upon acquisition of controlling interest, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net		(494,837)		584
Net income attributable to noncontrolling interest holders in properties		(2,109)		(2,111)
Noncontrolling interests portion of depreciation and amortization		(2,408)		(2,110)
Preferred distributions and dividends		(1,313)		(1,313)
Funds from Operations	$	648,652	$	570,643
FFO Allocable to Simon Property	$	537,825	$	473,451
Diluted net income per share to diluted FFO per share reconciliation:
Diluted net income per share	$	2.18	$	0.61
Depreciation and amortization from consolidated properties and our share of depreciation and amortization from unconsolidated entities, net of noncontrolling interests portion of depreciation and amortization		1.03		1.00
(Gain) loss upon acquisition of controlling interest, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net		(1.39)		—
Diluted FFO per share	$	1.82	$	1.61

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Item 3.    Qualitative and Quantitative Disclosures About Market Risk

            Sensitivity Analysis.    We disclosed a comprehensive qualitative and quantitative analysis regarding market risk in the Management's Discussion and Analysis of Financial Condition and Results of Operations included in our 2011 Annual Report on Form 10-K. There have been no material changes in the assumptions used or results obtained regarding market risk since December 31, 2011.

Item 4.    Controls and Procedures

            Evaluation of Disclosure Controls and Procedures.    We maintain disclosure controls and procedures (as defined in Rules 13a-15(e) under the Securities Exchange Act of 1934 (the "Exchange Act")) that are designed to provide reasonable assurance that information required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosures. Because of inherent limitations, disclosure controls and procedures, no matter how well designed and operated, can provide only reasonable, and not absolute, assurance that the objectives of disclosure controls and procedures are met.

            Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of the end of the period covered by this report, our disclosure controls and procedures are effective at a reasonable assurance level.

            Changes in Internal Control Over Financial Reporting.    There have not been any changes in our internal control over financial reporting (as defined in Rule 13a-15(f)) that occurred during the quarter ended March 31, 2012 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

32

Part II — Other Information

Item 1.    Legal Proceedings

            We are involved from time-to-time in various legal proceedings that arise in the ordinary course of our business, including, but not limited to commercial disputes, environmental matters, and litigation in connection with transactions including acquisitions and divestitures. We believe that such litigation, claims and administrative proceedings will not have a material adverse impact on our financial position or our results of operations. We record a liability when a loss is considered probable and the amount can be reasonably estimated.

Item 1A.    Risk Factors

            Through the period covered by this report, there were no significant changes to the Risk Factors disclosed in "Part 1: Business" of our 2011 Annual Report on Form 10-K.

Item 2.    Unregistered Sales of Equity Securities and Use of Proceeds

            During the quarter ended March 31, 2012, we issued 90,465 shares of common stock to limited partners in exchange for an equal number of units. The issuance of the shares of common stock was made pursuant to the terms of the Partnership Agreement of the Operating Partnership and was exempt from registration provided by Section 4(2) of the Securities Act of 1933, as amended.

            There were no reportable purchases of equity securities during the quarter ended March 31, 2012.

Item 5.    Other Information

            During the quarter covered by this report, the Audit Committee of Simon Property Group, Inc.'s Board of Directors approved certain audit-related, tax compliance and tax consulting to be provided by Ernst & Young, LLP, our independent registered public accounting firm. This disclosure is made pursuant to Section 10A(i)(2) of the Securities Exchange Act of 1934, as added by Section 202 of the Sarbanes-Oxley Act of 2002.

33

Item 6.    Exhibits

Exhibit Number		Exhibit Descriptions
	10.1*	Form of Simon Property Group Series 2012 LTIP Unit Award Agreement.
	31.1	Certification by the Chief Executive Officer pursuant to rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
	31.2	Certification by the Chief Financial Officer pursuant to rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
	32	Certification by the Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
	101.INS	XBRL Instance Document
	101.SCH	XBRL Taxonomy Extension Schema Document
	101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
	101.LAB	XBRL Taxonomy Extension Label Linkbase Document
	101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
	101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

*

Represents a management contract, or compensatory plan, contract or arrangement required to be filed pursuant to Regulation S-K.

34

SIGNATURES

            Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

SIMON PROPERTY GROUP, INC.

/s/ STEPHEN E. STERRETT
Stephen E. Sterrett
Senior Executive Vice President and
Chief Financial Officer

Date: May 8, 2012

35

EX-10.1

EX-31.1

EX-31.2

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EXHIBIT 31.2

CERTIFICATION PURSUANT TO
RULE 13a-14(a)/15d-14(a)
OF THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Stephen E. Sterrett, certify that:

1.

I have reviewed this quarterly report on Form 10-Q of Simon Property Group, Inc.;

2.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.

The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act rules 13a-15(f) and 15d-15(f) for the registrant and have:

(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;



(b)

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;



(c)

Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



(d)

Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.

The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and



(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 8, 2012

/s/ STEPHEN E. STERRETT
Stephen E. Sterrett
Senior Executive Vice President and
Chief Financial Officer

37

QuickLinks

EXHIBIT 31.2

XML

Debt (Details) (USD $)	3 Months Ended	12 Months Ended				3 Months Ended	1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2012 Unsecured Debt Yen	Mar. 31, 2012 Unsecured Debt Euro	Mar. 31, 2012 Unsecured Debt Senior unsecured notes	Mar. 31, 2012 Unsecured Debt Senior unsecured notes 5.75%	Mar. 31, 2012 Unsecured Debt Senior unsecured notes 2.15%	Mar. 13, 2012 Unsecured Debt Senior unsecured notes 2.15%	Mar. 31, 2012 Unsecured Debt Senior unsecured notes 3.375%	Mar. 13, 2012 Unsecured Debt Senior unsecured notes 3.375%	Mar. 31, 2012 Unsecured Debt Senior unsecured notes 4.75%	Mar. 13, 2012 Unsecured Debt Senior unsecured notes 4.75%	Nov. 30, 2011 Unsecured Debt Term loan	Mar. 31, 2012 Unsecured Debt Term loan	Nov. 02, 2011 Unsecured Debt Term loan	Mar. 31, 2012 Unsecured Debt Credit Facility	Mar. 31, 2012 Secured Debt note property mortgagepool	Dec. 31, 2011 Secured Debt	Mar. 31, 2012 Secured Debt Term loan	Mar. 31, 2012 Secured Debt Mortgages property	Mar. 31, 2012 Secured Debt Mortgages The Mills acquisition property
Debt
Total Mortgages and Other Indebtedness	$ 22,800,562,000	$ 18,446,440,000	$ 270,700,000	$ 1,000,000,000	$ 12,300,000,000									$ 160,000,000			$ 8,300,000,000	$ 6,800,000,000			$ 2,600,000,000
Credit facility, amount outstanding																1,900,000,000
Available borrowing capacity														740,000,000		2,000,000,000
Maximum amount outstanding during period																3,100,000,000
Credit facility, weighted average amount outstanding																1,300,000,000
Letters of credit outstanding																36,000,000
Maximum borrowing capacity															900,000,000	4,000,000,000
Optional expanded maximum borrowing capacity																5,000,000,000
Reference rate													LIBOR			LIBOR
Interest added to reference rate (in basis points)															100.00%	100.00%
Additional facility fee (in basis points)																15
Multi-currency tranche																2,000,000,000
Notes issued							600,000,000		600,000,000		550,000,000
Interest rate on debt (as a percent)						5.75%		2.15%		3.375%		4.75%
Average interest rate (as a percent)																				2.36%
Amount of debt redeemed						74,200,000													735,000,000	237,800,000
Number of unencumbered properties on repayment of debt																				6
Number of properties encumbered by assumption of debt in acquisition																					9
Debt covenants
Number of non-recourse mortgage notes under which the Company and subsidiaries are borrowers																	91
Number of properties secured by non-recourse mortgage notes																	91
Number of cross-defaulted and cross-collateralized mortgage pools																	8
Total number of properties pledged as collateral for cross defaulted and cross collateralized mortgages																	38
Fair value of debt
Carrying value of fixed-rate mortgages and other indebtedness	20,000,000,000	15,900,000,000
Fair value of fixed-rate mortgages and other indebtedness	$ 21,894,000	$ 17,905,000
Weighted average discount rates assumed in calculation of fair value for fixed-rate mortgages (as a percent)	3.73%	3.60%

XML

Significant Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Level 1
Fair Value Measurement:
Marketable securities with Level 1 fair value inputs	$ 451.2	$ 417.0
Level 2
Fair Value Measurement:
Interest rate swap agreements and foreign currency forward contracts, gross liability balance	8.4	12.2
Interest rate swap agreements and foreign currency forward contracts, gross asset balance	$ 1.2	$ 14.9

XML

Real Estate Acquisitions and Dispositions (Details) (USD $)	1 Months Ended	3 Months Ended						3 Months Ended
	Dec. 31, 2011 property	Mar. 31, 2012 property	Dec. 31, 2011	Mar. 31, 2012 The Mills acquisition property	Mar. 22, 2012 The Mills acquisition	Mar. 14, 2012 Klepierre	Jan. 06, 2012 Del Amo Fashion Center	Sep. 30, 2011 King of Prussia	Mar. 31, 2012 King of Prussia	Aug. 25, 2011 King of Prussia
Real Estate Acquisitions and Dispositions [Line Items]
Number of joint ventures in which additional interest is acquired		26		26
Cost of acquisition including assumption of debt					$ 1,500,000,000	$ 2,000,000,000
Interest in income-producing properties, under joint venture arrangements (as a percent)						28.70%
Additional Business Acquisition Percentage of Ownership Acquired							25.00%			83.75%
Aggregate carrying value of consolidated properties disposed of		115,000,000
Debt obligation related to consolidated properties disposed of		115,000,000
Joint venture ownership percentage	50.00%		50.00%
Initial Investment Percentage of Business Acquired	100.00%		100.00%
Number of consolidated properties received in distribution	6
Gain due to acquisition of controlling interest			168,300,000					82,900,000
Cumulative Investment Ownership Percentage (as a percent)										96.10%
Mortgage indebtedness assumed									$ 160,100,000
Number of properties sold		1

XML

Per Share Data

3 Months Ended

Mar. 31, 2012

Per Share Data

Per Share Data

4.         Per Share Data

            We determine basic earnings per share based on the weighted average number of shares of common stock outstanding during the period and we consider any participating securities for purposes of applying the two-class method. We determine diluted earnings per share based on the weighted average number of shares of common stock outstanding combined with the incremental weighted average shares that would have been outstanding assuming all dilutive potentially common shares were converted into shares at the earliest date possible. The following table sets forth the computation of our basic and diluted earnings per share.

	For the Three Months Ended March 31,
	2012		2011
Net Income available to Common Stockholders — Basic	$	645,410	$	179,412
Effect of dilutive securities:
Impact to General Partner's interest in Operating Partnership from all dilutive securities and options		—		22
Net Income available to Common Stockholders — Diluted	$	645,410	$	179,434
Weighted Average Shares Outstanding — Basic		295,693,410		293,080,205
Effect of stock options		1,110		210,291
Weighted Average Shares Outstanding — Diluted		295,694,520		293,290,496

            For the three months ended March 31, 2012, potentially dilutive securities include stock options, units that are exchangeable for common stock and long-term incentive performance, or LTIP, units granted under our long-term incentive performance programs that are convertible into units and exchangeable for common stock. The only securities that had a dilutive effect for the three months ended March 31, 2012 and 2011 were stock options. We accrue dividends when they are declared.

XML

Per Share Data (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Per Share Data
Net Income attributable to Common Stockholders - Basic	$ 645,410	$ 179,412
Effect of dilutive securities:
Impact to General Partner's interest in Operating Partnership from all dilutive securities and options		22
Net Income attributable to Common Stockholders - Diluted	$ 645,410	$ 179,434
Weighted Average Shares Outstanding - Basic (in shares)	295,693,410	293,080,205
Effect of stock options (in shares)	1,110	210,291
Weighted Average Shares Outstanding - Diluted (in shares)	295,694,520	293,290,496

XML

Significant Accounting Policies (Details 6)						3 Months Ended	12 Months Ended
	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Mar. 31, 2012 Interest rate swap USD ($) instrument	Dec. 31, 2011 Interest rate swap USD ($)	Mar. 31, 2012 Interest rate cap USD ($) instrument	Mar. 31, 2012 USD-Yen currency forward contract JPY (¥)	Dec. 31, 2011 USD-Yen currency forward contract JPY (¥)	Dec. 31, 2010 USD-Yen currency forward contract JPY (¥)	Mar. 31, 2012 USD-Yen currency forward contract USD ($)	Dec. 31, 2011 First USD-Euro forward contract USD ($)	Dec. 31, 2011 First USD-Euro forward contract EUR (€)
Derivative financial instruments
Number of Instruments			3		6
Notional Amount			$ 485,200,000		$ 445,400,000
Interest rate derivative liability, fair value			8,400,000	10,000,000
Notional amount, foreign currency derivatives (in Japanese Yen / Euro)						5,000,000,000					141,300,000
Asset value of forwards included in deferred costs and other assets									1,200,000	14,900,000
Foreign currency contract, notional amount entered into during period						2,500,000,000	3,800,000,000	1,700,000,000
Gross accumulated other comprehensive income or loss related to derivative activities	$ 99,000,000	$ 115,800,000

XML

Investment in Unconsolidated Entities (Details) (USD $)	3 Months Ended											1 Months Ended										0 Months Ended	1 Months Ended	3 Months Ended
	Dec. 31, 2011	Mar. 31, 2012 property	Dec. 09, 2011	Mar. 31, 2012 Klepierre	Mar. 14, 2012 Klepierre	Jan. 09, 2012 Italy property	Mar. 31, 2012 Europe property	Mar. 14, 2012 Europe	Mar. 22, 2012 The Mills acquisition property	Mar. 31, 2012 United States joint ventures property	Dec. 31, 2011 United States joint ventures property	Jan. 31, 2012 GCI	Jan. 09, 2012 GCI	Dec. 31, 2011 GCI	Mar. 31, 2012 Japan joint ventures property	Dec. 31, 2011 Japan joint ventures	Mar. 31, 2012 Mexico joint venture property	Mar. 31, 2012 South Korea joint ventures property	Dec. 31, 2011 South Korea joint ventures	Mar. 31, 2012 Malaysia joint venture property	Jan. 06, 2012 Del Amo Fashion Center	Mar. 03, 2012 SPG-FCM	Jan. 31, 2012 SPG-FCM	Mar. 31, 2012 SPG-FCM	Mar. 22, 2012 SPG-FCM property	Dec. 31, 2011 SPG-FCM
Real Estate Joint Ventures
Number of income-producing properties									9
Number of income-producing properties						45	271			78	87				8		1	2		1
Interest in income-producing properties, under joint venture arrangements (as a percent)					28.70%			28.70%
Ownership interest (as a percent)			50.00%											49.00%	40.00%			50.00%			50.00%
Purchase price of business acquired																					$ 50,000,000
Contribution to SPG-FCM ventures																							50,000,000
Number of properties in which additional interest is acquired		26																							26
Number of remaining unconsolidated properties																									16
Cost of acquisition including assumption of debt					2,000,000,000																				1,500,000,000
Debt obligation related to consolidated properties disposed of																									562,100,000
Trust preferred securities retired																						100,000,000
Related party debt obligations extinguished during the period																						558,400,000
Mortgage indebtedness assumed																									2,600,000,000
Gain due to acquisition of controlling interest	168,300,000																							488,700,000
Other than temporary impairment charge																								22,400,000
Joint venture ownership percentage	50.00%																				25.00%					50.00%
Investment in unconsolidated entities, at equity	1,378,084,000	1,930,480,000													337,600,000	349,500,000		48,400,000	43,800,000
Estimated fair value of newly consolidated properties																									4,300,000,000
International Joint Venture Investments
Proceeds from sale of interest in joint venture												375,800,000
Gain on sale of or disposal of assets and interests in unconsolidated entities, net												28,800,000
Accumulated losses reclassified													39,500,000
Cost of acquisition including assumption of debt					$ 2,000,000,000																				$ 1,500,000,000
Number of shares owned in acquired entity				54,430,000
Quoted market price of shares owned in acquired entity (in dollars per share)				$ 34.69

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Investment in Unconsolidated Entities (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Loans To SPG-FCM
Interest income from SPG-FCM and Mills loans, net of inter-entity eliminations	$ 2.0	$ 2.5
Base interest rate for loans to SPG-FCM and Mills	LIBOR
Basis points added to base rate for remaining loan to SPG-FCM (as a percent)	2.75%

XML

Significant Accounting Policies

3 Months Ended

Mar. 31, 2012

Significant Accounting Policies

Significant Accounting Policies

3.         Significant Accounting Policies

• Cash and Cash Equivalents

            We consider all highly liquid investments purchased with an original maturity of 90 days or less to be cash and cash equivalents. Cash equivalents are carried at cost, which approximates fair value. Cash equivalents generally consist of commercial paper, bankers' acceptances, Eurodollars, repurchase agreements, and money market deposits or securities. Financial instruments that potentially subject us to concentrations of credit risk include our cash and cash equivalents and our trade accounts receivable. We place our cash and cash equivalents with institutions with high credit quality. However, at certain times, such cash and cash equivalents are in excess of FDIC and SIPC insurance limits.

• Marketable and Non-Marketable Securities

            Marketable securities consist primarily of the investments of our captive insurance subsidiaries, available-for-sale securities, our deferred compensation plan investments, and certain investments held to fund the debt service requirements of debt previously secured by investment properties that have been sold.

            The types of securities included in the investment portfolio of our captive insurance subsidiaries typically include U.S. Treasury or other U.S. government securities as well as corporate debt securities with maturities ranging from less than 1 to 10 years. These securities are classified as available-for-sale and are valued based upon quoted market prices or other observable inputs when quoted market prices are not available. The amortized cost of debt securities, which approximates fair value, held by our captive insurance subsidiaries is adjusted for amortization of premiums and accretion of discounts to maturity. Changes in the values of these securities are recognized in accumulated other comprehensive income (loss) until the gain or loss is realized or until any unrealized loss is deemed to be other-than-temporary. We review any declines in value of these securities for other-than-temporary impairment and consider the severity and duration of any decline in value. To the extent an other-than-temporary impairment is deemed to have occurred, an impairment charge is recorded and a new cost basis is established. Subsequent changes are then recognized through other comprehensive income (loss) unless another other-than-temporary impairment is deemed to have occurred.

            Our investments in Capital Shopping Centres Group PLC, or CSCG, and Capital & Counties Properties PLC, or CAPC, are accounted for as available-for-sale securities. These investments are adjusted to their quoted market price, including a related foreign exchange component, with corresponding adjustment in other comprehensive income (loss). At March 31, 2012, we owned 35.4 million shares each of CSCG and of CAPC. At March 31, 2012, the market value of our investments in CSCG and CAPC was $187.3 million and $108.4 million, respectively, with an aggregate net unrealized gain on these investments of approximately $63.9 million. The market value of our investments in CSCG and CAPC at December 31, 2011 was $170.7 million and $100.9 million, respectively, with an aggregate unrealized gain of $39.7 million.

            Net unrealized gains recorded in other comprehensive income (loss) as of March 31, 2012 and December 31, 2011 were approximately $66.4 million and $41.9 million, respectively, and represent the valuation and related currency adjustments for our marketable securities. As of March 31, 2012, we do not consider any of the declines in value of our marketable and non-marketable securities to be an other-than-temporary impairment, as these market value declines, if any, have existed for a short period of time, and, in the case of debt securities, we have the ability and intent to hold these securities to maturity.

            Our insurance subsidiaries are required to maintain statutory minimum capital and surplus as well as maintain a minimum liquidity ratio. Therefore, our access to these securities may be limited. Our deferred compensation plan investments are classified as trading securities and are valued based upon quoted market prices. The investments have a matching liability as the amounts are fully payable to the employees that earned the compensation. Changes in value of these securities and changes to the matching liability to employees are both recognized in earnings and, as a result, there is no impact to consolidated net income.

            As of March 31, 2012 and December 31, 2011, we also had investments of $25.2 million and $24.9 million, respectively, which must be used to fund the debt service requirements of mortgage debt related to investment properties sold that previously collateralized the debt. These investments are classified as held-to-maturity and are recorded at amortized cost as we have the ability and intent to hold these investments to maturity.

            At March 31, 2012 and December 31, 2011, we had investments of $105.1 million in non-marketable securities that we account for under the cost method. We regularly evaluate these investments for any other-than-temporary impairment in their estimated fair value and determined that no adjustment in the carrying value was required.

• Loans Held for Investment

            From time to time, we may make investments in mortgage loans or mezzanine loans of third parties that own and operate commercial real estate assets located in the United States. Mortgage loans are secured, in part, by mortgages recorded against the underlying properties which are not owned by us. Mezzanine loans are secured, in part, by pledges of ownership interests of the entities that own the underlying real estate. Loans held for investment are carried at cost, net of any premiums or discounts which are accreted or amortized over the life of the related loan receivable utilizing the effective interest method. We evaluate the collectability of both interest and principal of each of these loans quarterly to determine whether the value has been impaired. A loan is deemed to be impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the existing contractual terms. When a loan is impaired, the amount of the loss accrual is calculated by comparing the carrying amount of the loan held for investment to its estimated realizable value.

            At March 31, 2012 and December 31, 2011, we had investments in three mortgage and mezzanine loans with an aggregate carrying value of $162.9 million and $162.8 million, respectively. These loans mature at various dates through October 2012 with a weighted average maturity of approximately three months. Certain of these loans require interest-only payments while others require payments of interest and principal based on a 30 year amortization. Interest rates on these loans are fixed between 5.9% and 7.0% per annum with a weighted average interest rate of approximately 6.3% and approximate market rates for instruments of similar quality and duration. During the three months ended March 31, 2012 and March 31 2011, we recorded $3.1 million and $6.9 million, respectively, in interest income earned from these loans held for investment. Payments on each of these loans were current as of March 31, 2012. In April 2012, one of these mortgage loans with a principal balance of $76.7 million was repaid in its entirety.

            On December 9, 2011, we paid consideration of $88.8 million to acquire a 50% equity interest in two real estate developments for which we are the construction lender. The loans primarily bear interest at 7.0% and mature in May and July 2013. At March 31, 2012 and December 31, 2011, the aggregate amount drawn on the loans was $82.3 million and $50.7 million, respectively. We consolidated these assets as of the date we acquired our equity interest and, accordingly, amounts drawn on the loans are eliminated in consolidation.

• Fair Value Measurements

            We hold marketable securities that totaled $451.2 million and $417.0 million at March 31, 2012 and December 31, 2011, respectively, and are considered to have Level 1 fair value inputs. In addition, we have derivative instruments which are classified as having Level 2 inputs which consist primarily of interest rate swap agreements and foreign currency forward contracts with a gross liability balance of $8.4 million and $12.2 million at March 31, 2012 and December 31, 2011, respectively, and a gross asset value of $1.2 million and $14.9 million at March 31, 2012 and December 31, 2011, respectively. We also have interest rate cap agreements with nominal asset values.

            Level 1 fair value inputs are quoted prices for identical items in active, liquid and visible markets such as stock exchanges. Level 2 fair value inputs are observable information for similar items in active or inactive markets, and appropriately consider counterparty creditworthiness in the valuations. Level 3 fair value inputs reflect our best estimate of inputs and assumptions market participants would use in pricing an asset or liability at the measurement date. The inputs are unobservable in the market and significant to the valuation estimate.

            Note 6 includes a discussion of the fair value of debt measured using Level 1 and Level 2 inputs. Note 5 includes a discussion of the fair values recorded in purchase accounting and impairment, using Level 2 and Level 3 inputs. Level 3 inputs to our purchase accounting and impairment include our estimations of net operating results of the property, capitalization rates and discount rates.

• Noncontrolling Interests and Temporary Equity

            Details of the carrying amount of our noncontrolling interests are as follows:

	As of March 31, 2012		As of December 31, 2011
Limited partners' interests in the Operating Partnership	$	1,216,247	$	953,622
Nonredeemable noncontrolling deficit interests in properties, net		(619)		(59,000)
Total noncontrolling interests reflected in equity	$	1,215,628	$	894,622

            The remaining interest in a property or portfolio of properties which are redeemable at the option of the holder or in circumstances that may be outside our control, are accounted for as temporary equity within limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties in the accompanying consolidated balance sheets. The carrying amount of the noncontrolling interest is adjusted to the redemption amount assuming the instrument is redeemable at the balance sheet date. Changes in the redemption value of the underlying noncontrolling interest are recorded within accumulated deficit. There are no noncontrolling interests redeemable at amounts in excess of fair value.

            Net income attributable to noncontrolling interests (which includes nonredeemable noncontrolling interests in consolidated properties, limited partners' interests in the Operating Partnership, redeemable noncontrolling interests in consolidated properties and preferred distributions payable by the Operating Partnership) is a component of consolidated net income. In addition, the individual components of other comprehensive income (loss) are presented in the aggregate for both controlling and noncontrolling interests, with the portion attributable to noncontrolling interests deducted from comprehensive income attributable to common stockholders.

            A rollforward of noncontrolling interests reflected in equity is as follows:

	For the Three Months Ended March 31,
	2012		2011
Noncontrolling interests, beginning of period	$	894,622	$	802,972
Net Income attributable to noncontrolling interests after preferred distributions and income attributable to redeemable noncontrolling interests in consolidated properties		133,010		38,941
Distributions to noncontrolling interest holders		(58,098)		(70,393)
Other comprehensive income allocable to noncontrolling interests:
Unrealized gain (loss) on interest rate hedge agreements		2,401		(1,900)
Net loss on derivative instruments reclassified from accumulated comprehensive loss into interest expense		858		671
Currency translation adjustments		7,523		3,739
Changes in available-for-sale securities and other		3,958		343
		14,740		2,853
Adjustment to limited partners' interest from increased (decreased) ownership in the Operating Partnership		163,845		(5,638)
Units issued to limited partners		—		202
Units exchanged for common shares		(1,418)		(2,211)
Purchase of noncontrolling interest and other		68,927		4,426
Noncontrolling interests, end of period	$	1,215,628	$	771,152

• Derivative Financial Instruments

            We record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. We use a variety of derivative financial instruments in the normal course of business to selectively manage or hedge the risks associated with our indebtedness and interest payments. Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements. To accomplish this objective, we primarily use interest rate swaps and caps. We require that hedging derivative instruments be highly effective in reducing the risk exposure that they are designated to hedge. As a result, there was no significant ineffectiveness from any of our derivative activities during the period. We formally designate any instrument that meets these hedging criteria as a hedge at the inception of the derivative contract. We have no credit-risk-related hedging or derivative activities.

            As of March 31, 2012, we had the following outstanding interest rate derivatives related to interest rate risk:

Interest Rate Derivative	Number of Instruments		Notional Amount
Interest Rate Swaps		3	$485.2 million
Interest Rate Caps		6	$445.4 million

            The carrying value of our interest rate swap agreements, at fair value, is a net liability balance of $8.4 million and $10.0 million at March 31, 2012 and December 31, 2011, respectively, and is included in other liabilities and accrued dividends. The interest rate cap agreements were of nominal value at March 31, 2012 and December 31, 2011 and we generally do not apply hedge accounting to these arrangements.

            We are also exposed to fluctuations in foreign exchange rates on financial instruments which are denominated in foreign currencies, primarily in Japan and Europe. We use currency forward contracts and foreign currency denominated debt to manage our exposure to changes in foreign exchange rates on certain Yen and Euro-denominated receivables and net investments. Currency forward contracts involve fixing the Yen:USD or Euro:USD exchange rate for delivery of a specified amount of foreign currency on a specified date. The currency forward contracts are typically cash settled in US dollars for their fair value at or close to their settlement date. Approximately ¥5.0 billion remains as of March 31, 2012 for all forward contracts. We entered into Yen:USD forward contracts during 2010 for approximately ¥1.7 billion that we expect to receive through October 2012 and we entered into Yen:USD forward contracts during 2011 for ¥3.8 billion that we expect to receive through October 2013. In 2012, we entered into additional Yen:USD forward contracts for approximately ¥2.5 billion that we expect to receive through January 5, 2015. The March 31, 2012 net asset balance related to these forward contracts was $1.2 million which is included in deferred costs and other assets. We have reported the changes in fair value for these forward contracts in earnings. The underlying currency adjustments on the foreign currency denominated receivables are also reported in income and generally offset the amounts in earnings for these forward contracts.

            In 2011, we entered into a Euro:USD forward contract with a €141.3 million notional value which was designated as a net investment hedge. The December 31, 2011 asset balance related to this forward was $14.9 million and is included in deferred costs and other assets. We apply hedge accounting and the change in fair value for this Euro forward contract is reflected in other comprehensive income. Changes in the value of this hedge are offset by changes in the underlying hedged Euro-denominated joint venture investment. In connection with our sale of Gallerie Commerciali Italia, or GCI, as further discussed in Note 5, this hedge was terminated in January 2012.

            The total gross accumulated other comprehensive loss related to our derivative activities, including our share of the other comprehensive loss from joint venture properties, approximated $99.0 million and $115.8 million as of March 31, 2012 and December 31, 2011, respectively.

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Investment in Unconsolidated Entities (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011	Dec. 31, 2010
Assets:
Investment properties at cost	$ 33,923,326		$ 29,657,046
Less - accumulated depreciation	8,587,591		8,388,130
Investment properties, net	25,335,735		21,268,916
Cash and cash equivalents	880,549	636,050	798,650	796,718
Tenant receivables and accrued revenue, net	417,085		486,731
Investment in unconsolidated entities, at equity	1,930,480		1,378,084
Deferred costs and other assets	1,798,796		1,633,544
Total assets	32,417,465		26,216,925
Liabilities and Partners' (Deficit) Equity:
Mortgages and other indebtedness	22,800,562		18,446,440
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,127,794		1,091,712
Total liabilities	24,861,544		20,404,692
Total liabilities and equity	32,417,465		26,216,925
Revenue:
Minimum rent	702,098	644,332
Overage rent	27,680	17,142
Tenant reimbursements	306,388	281,425
Other income	50,516	46,483
Total revenue	1,118,969	1,019,874
Operating Expenses:
Property operating	104,740	99,541
Depreciation and amortization	285,109	266,310
Real estate taxes	98,702	93,264
Repairs and maintenance	25,641	30,835
Advertising and promotion	21,098	21,888
Provision for credit losses	3,545	1,405
Other	17,778	19,018
Total operating expenses	603,360	568,984
Operating Income	515,609	450,890
Interest expense	(258,079)	(248,119)
Income (loss) from unconsolidated entities	30,353	18,621
Real Estate joint ventures
Assets:
Investment properties at cost	14,161,851		20,481,657
Less - accumulated depreciation	4,588,199		5,264,565
Investment properties, net	9,573,652		15,217,092
Cash and cash equivalents	530,886		806,895
Tenant receivables and accrued revenue, net	190,922		359,208
Investment in unconsolidated entities, at equity	40,171		133,576
Deferred costs and other assets	364,255		526,101
Total assets	10,699,886		17,042,872
Liabilities and Partners' (Deficit) Equity:
Mortgages and other indebtedness	11,468,736		15,582,321
Accounts payable, accrued expenses, intangibles, and deferred revenues	528,648		775,733
Other liabilities	275,768		981,711
Total liabilities	1,273,152		17,339,765
Preferred units	67,450		67,450
Partners' (deficit) equity	(1,640,716)		(364,343)
Total liabilities and equity	10,699,886		17,042,872
Our Share of:
Partners' (deficit) equity	(787,451)		(32,000)
Add: Excess Investment	2,007,617		714,515
Our net Investment in Unconsolidated Entities, at equity	1,220,166		682,515
Amortization period, maximum (in years)	40
Revenue:
Minimum rent	368,666	352,635
Overage rent	48,694	30,227
Tenant reimbursements	172,093	165,620
Other income	52,962	31,661
Total revenue	642,415	580,143
Operating Expenses:
Property operating	118,119	111,562
Depreciation and amortization	138,056	131,730
Real estate taxes	48,333	45,853
Repairs and maintenance	14,971	16,770
Advertising and promotion	15,456	13,472
Provision for credit losses	982	804
Other	53,642	29,215
Total operating expenses	389,559	349,406
Operating Income	252,856	230,737
Interest expense	(159,902)	(150,516)
Income (loss) from unconsolidated entities	(315)	173
Income from Continuing Operations	92,639	80,394
(Loss)/income from discontinued joint venture interests	(7,690)	318
Net Income	84,949	80,712
Third-Party Investors' Share of Net Income	40,012	50,014
Our Share of Net Income	44,937	30,698
Amortization of Excess Investment	(14,584)	(12,077)
Income from unconsolidated entities	$ 30,353	$ 18,621

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Consolidated Statements of Operations and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUE:
Minimum rent	$ 702,098	$ 644,332
Overage rent	27,680	17,142
Tenant reimbursements	306,388	281,425
Management fees and other revenues	32,287	30,492
Other income	50,516	46,483
Total revenue	1,118,969	1,019,874
EXPENSES:
Property operating	104,740	99,541
Depreciation and amortization	285,109	266,310
Real estate taxes	98,702	93,264
Repairs and maintenance	25,641	30,835
Advertising and promotion	21,098	21,888
Provision for credit losses	3,545	1,405
Home and regional office costs	32,858	29,056
General and administrative	13,889	7,667
Other	17,778	19,018
Total operating expenses	603,360	568,984
OPERATING INCOME	515,609	450,890
Interest expense	(258,079)	(248,119)
Income tax expense of taxable REIT subsidiaries	(891)	(1,142)
Income from unconsolidated entities	30,353	18,621
Gain (loss) upon acquisition of controlling interests, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net	494,837	(584)
CONSOLIDATED NET INCOME	781,829	219,666
Net income attributable to noncontrolling interests	135,585	39,420
Preferred dividends	834	834
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	645,410	179,412
BASIC EARNINGS PER COMMON SHARE:
Net income attributable to common stockholders (in dollars per share)	$ 2.18	$ 0.61
DILUTED EARNINGS PER COMMON SHARE:
Net income attributable to common stockholders (in dollars per share)	$ 2.18	$ 0.61
Consolidated Net Income	781,829	219,666
Unrealized gain (loss) on derivative hedge agreements	11,692	(11,283)
Net loss on derivative instruments reclassified from accumulated other comprehensive income into interest expense	5,115	3,944
Currency translation adjustments	43,941	21,899
Changes in available-for-sale securities and other	24,535	2,241
Comprehensive income	867,112	236,467
Comprehensive income attributable to noncontrolling interests	150,325	42,273
Comprehensive income attributable to common stockholders	$ 716,787	$ 194,194

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Organization

3 Months Ended

Mar. 31, 2012

Organization

Organization

1.         Organization

            Simon Property Group, Inc., or Simon Property, is a Delaware corporation that operates as a self-administered and self-managed real estate investment trust, or REIT, under the Internal Revenue Code. Simon Property Group, L.P., or the Operating Partnership, is our majority-owned partnership subsidiary that owns all of our real estate properties and other assets. In these condensed notes to the unaudited consolidated financial statements, the terms "we", "us" and "our" refer to Simon Property, the Operating Partnership, and its subsidiaries.

            We own, develop and manage retail real estate properties, which consist primarily of regional malls, Premium Outlets®, The Mills®, and community/lifestyle centers. As of March 31, 2012, we owned or held an interest in 325 income-producing properties in the United States, which consisted of 161 regional malls, 58 Premium Outlets, 70 community/lifestyle centers, 13 properties in the Mills portfolio, and 23 other shopping centers or outlet centers in 41 states and Puerto Rico. Internationally, as of March 31, 2012, we had ownership interests in eight Premium Outlets in Japan, two Premium Outlets in South Korea, one Premium Outlet in Mexico, and one Premium Outlet in Malaysia. Additionally, on March 14, 2012, we purchased a 28.7% equity stake in Klépierre, a publicly traded, Paris-based real estate company, which owns, or has an interest in, approximately 271 shopping centers located in 13 countries in Europe.

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Equity (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Increase (decrease) in equity
Balance, at beginning of period	$ 5,544,288
Public offering of common stock	1,214,283
Other	13,225
Purchase of noncontrolling interest	(4,667)
Distributions to common shareholders and limited partners, excluding Operating Partnership preferred interests	(337,941)
Distributions to other noncontrolling interest partners	(191)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity	864,537
Balance, at end of period	7,293,534
Comprehensive income attributable to noncontrolling interests	150,325	42,273
Preferred Stock
Increase (decrease) in equity
Balance, at beginning of period	45,047
Other	(82)
Balance, at end of period	44,965
Comprehensive income attributable to preferred interests	479
Common Stock
Increase (decrease) in equity
Balance, at beginning of period	30
Public offering of common stock	1
Balance, at end of period	31
Accumulated Other Comprehensive Income
Increase (decrease) in equity
Balance, at beginning of period	(94,263)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity	70,543
Balance, at end of period	(23,720)
Capital in Excess of Par Value
Increase (decrease) in equity
Balance, at beginning of period	8,103,133
Exchange of limited partner units for common shares	1,418
Public offering of common stock	1,214,282
Other	1,370
Purchase of noncontrolling interest	(63,226)
Adjustment to limited partners' interest from increased ownership in the Operating Partnership	(163,845)
Balance, at end of period	9,093,132
Accumulated Deficit
Increase (decrease) in equity
Balance, at beginning of period	(3,251,740)
Other	(136)
Distributions to common shareholders and limited partners, excluding Operating Partnership preferred interests	(280,034)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity	646,244
Balance, at end of period	(2,885,666)
Common Stock Held in Treasury
Increase (decrease) in equity
Balance, at beginning of period	(152,541)
Other	1,705
Balance, at end of period	(150,836)
Noncontrolling interests
Increase (decrease) in equity
Balance, at beginning of period	894,622	802,972
Exchange of limited partner units for common shares	(1,418)	(2,211)
Other	10,368
Purchase of noncontrolling interest	58,559
Adjustment to limited partners' interest from increased ownership in the Operating Partnership	163,845
Distributions to common shareholders and limited partners, excluding Operating Partnership preferred interests	(57,907)
Distributions to other noncontrolling interest partners	(191)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity	147,750
Balance, at end of period	1,215,628	771,152
Comprehensive income attributable to noncontrolling interests	$ 2,096

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Basis of Presentation (Details)	3 Months Ended
	Mar. 31, 2012 property	Mar. 31, 2011	Dec. 31, 2011
Properties:
Wholly owned properties included in consolidation	229
Partially owned properties included in consolidation	18
Total number of joint venture properties	90
Number of joint venture properties managed by the entity	76
Number of International joint venture properties	12
Number of joint venture properties managed by others	14
Ownership interest:
Weighted average ownership percentage in the Operating Partnership	82.90%	83.00%
Ownership percentage in the Operating Partnership	83.20%		82.80%

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	May 31, 2010	Mar. 31, 2012 Joint Venture Mortgage and Indebtedness	Dec. 31, 2011 Joint Venture Mortgage and Indebtedness
Commitments and Contingencies
Insurance proceeds	$ 50
Minimum insurance coverage	50
Additional insurance proceeds	150
Guarantees of Joint Venture Indebtedness:
Loan guarantee		$ 113.4	$ 30.2

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Significant Accounting Policies (Details 2) (USD $) In Millions, unless otherwise specified	1 Months Ended		3 Months Ended		12 Months Ended
	Apr. 30, 2012	Dec. 31, 2011	Mar. 31, 2012 Y Loan M	Mar. 31, 2011	Dec. 31, 2011 Loan	Dec. 09, 2011
Loans Held for Investment
Mortgage and mezzanine loans on real estate, number of loans			3		3
Aggregate carrying values of mortgages and mezzanine loans		$ 162.8	$ 162.9		$ 162.8
Weighted average maturity period (in months)			3
Amortization period for payments of interest and principal on mortgage notes and mezzanine loans (in years)			30
Interest rates on mortgage notes and mezzanine loans, minimum (as a percent)			5.90%
Interest rates on mortgage notes and mezzanine loans, maximum (as a percent)			7.00%
Weighted average interest rates on mortgage notes and mezzanine loans (as a percent)		7.00%	6.30%
Interest income on loans held for investment			3.1	6.9
Repayment of mortgage loans	76.7
Ownership interest (as a percent)						50.00%
Consideration paid for equity interest		88.8
Interest rate (as a percent)		7.00%	6.30%
Aggregate amount drawn on the loans		$ 50.7	$ 82.3		$ 50.7

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Basis of Presentation

3 Months Ended

Mar. 31, 2012

Basis of Presentation

Basis of Presentation

2.         Basis of Presentation

            The accompanying unaudited consolidated financial statements include the accounts of all majority-owned subsidiaries, and all significant intercompany amounts have been eliminated. Due to the seasonal nature of certain operational activities, the results for the interim period ended March 31, 2012, are not necessarily indicative of the results to be expected for the full year.

            These consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and include all of the information and disclosures required by accounting principles generally accepted in the United States (GAAP) for interim reporting. Accordingly, they do not include all of the disclosures required by GAAP for complete financial statements. In the opinion of management, all adjustments necessary for fair presentation (including normal recurring accruals) have been included. The consolidated financial statements in this Form 10-Q should be read in conjunction with the audited consolidated financial statements and related notes contained in our 2011 Annual Report on Form 10-K.

            As of March 31, 2012, we consolidated 229 wholly-owned properties and 18 additional properties that are less than wholly-owned, but which we control or for which we are the primary beneficiary. We account for the remaining 90 properties, or the joint venture properties, as well as our investment in Klépierre, using the equity method of accounting. We manage the day-to-day operations of 76 of the 90 joint venture properties, but have determined that our partner or partners have substantive participating rights with respect to the assets and operations of these joint venture properties. Our investments in joint ventures in Japan, South Korea, Malaysia, and Mexico comprise 12 of the remaining 14 joint venture properties. The international properties are managed locally by joint ventures in which we share oversight responsibility with our partner.

            We allocate net operating results of the Operating Partnership after preferred distributions to third parties and to us based on the partners' respective weighted average ownership interests in the Operating Partnership. Net operating results of the Operating Partnership attributed to third parties are reflected in net income attributable to noncontrolling interests. Our weighted average ownership interest in the Operating Partnership was 82.9% and 83.0% for the three months ended March 31, 2012 and 2011, respectively. As of March 31, 2012 and December 31, 2011, our ownership interest in the Operating Partnership was 83.2% and 82.8%, respectively. We adjust the noncontrolling limited partners' interests at the end of each period to reflect their interest in the Operating Partnership.

            Preferred distributions of the Operating Partnership are accrued at declaration and represent distributions on outstanding preferred units of partnership interests held by limited partners, or preferred units, and are included in net income attributable to noncontrolling interests.

• Reclassifications

            We made certain reclassifications of prior period amounts in the consolidated financial statements to conform to the 2012 presentation. These reclassifications had no impact on previously reported net income attributable to common stockholders or earnings per share.

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS:
Investment properties at cost	$ 33,923,326	$ 29,657,046
Less - accumulated depreciation	8,587,591	8,388,130
Investment properties, net	25,335,735	21,268,916
Cash and cash equivalents	880,549	798,650
Tenant receivables and accrued revenue, net	417,085	486,731
Investment in unconsolidated entities, at equity	1,930,480	1,378,084
Investment in Klepierre, at equity	2,054,820
Deferred costs and other assets	1,798,796	1,633,544
Notes receivable from related party		651,000
Total assets	32,417,465	26,216,925
LIABILITIES:
Mortgages and other indebtedness	22,800,562	18,446,440
Accounts payable, accrued expenses, intangibles, and deferred revenues	1,127,794	1,091,712
Cash distributions and losses in partnerships and joint ventures, at equity	710,314	695,569
Other liabilities and accrued dividends	222,874	170,971
Total liabilities	24,861,544	20,404,692
Commitments and contingencies
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties	262,387	267,945
Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Series J 8 3/8% cumulative redeemable preferred stock, 1,000,000 shares authorized, 796,948 issued and outstanding with a liquidation value of $ 39,847	44,965	45,047
Capital in excess of par value	9,093,132	8,103,133
Accumulated deficit	(2,885,666)	(3,251,740)
Accumulated other comprehensive loss	(23,720)	(94,263)
Common stock held in treasury at cost, 3,865,144 and 3,877,448 shares, respectively	(150,836)	(152,541)
Total stockholder's equity	6,077,906	4,649,666
Noncontrolling interests	1,215,628	894,622
Total equity	7,293,534	5,544,288
Total liabilities and equity	32,417,465	26,216,925
Common stock
Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Common stock	31	30
Class B common stock
Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock):
Common stock

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Per Share Data (Tables)

3 Months Ended

Mar. 31, 2012

Per Share Data

Schedule of computation of basic and diluted earnings per share

	For the Three Months Ended March 31,
	2012		2011
Net Income available to Common Stockholders — Basic	$	645,410	$	179,412
Effect of dilutive securities:
Impact to General Partner's interest in Operating Partnership from all dilutive securities and options		—		22
Net Income available to Common Stockholders — Diluted	$	645,410	$	179,434
Weighted Average Shares Outstanding — Basic		295,693,410		293,080,205
Effect of stock options		1,110		210,291
Weighted Average Shares Outstanding — Diluted		295,694,520		293,290,496

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Document and Entity Information (USD $)	3 Months Ended
	Mar. 31, 2012
Entity Registrant Name	SIMON PROPERTY GROUP INC /DE/
Entity Central Index Key	0001063761
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Common stock
Entity Common Stock, Shares Outstanding	303,088,958
Entity Listing, Par Value Per Share	0.0001
Class B common stock
Entity Common Stock, Shares Outstanding	8,000
Entity Listing, Par Value Per Share	0.0001

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Investment in Unconsolidated Entities (Tables)

3 Months Ended

Mar. 31, 2012

Investment in Unconsolidated Entities

Summary of investments in joint ventures and share of income from such joint ventures, balance sheet

	March 31, 2012		December 31, 2011
BALANCE SHEETS
Assets:
Investment properties, at cost	$	14,161,851	$	20,481,657
Less — accumulated depreciation		4,588,199		5,264,565
		9,573,652		15,217,092
Cash and cash equivalents		530,886		806,895
Tenant receivables and accrued revenue, net		190,922		359,208
Investment in unconsolidated entities, at equity		40,171		133,576
Deferred costs and other assets		364,255		526,101
Total assets	$	10,699,886	$	17,042,872
Liabilities and Partners' Deficit:
Mortgages and other indebtedness	$	11,468,736	$	15,582,321
Accounts payable, accrued expenses, intangibles, and deferred revenue		528,648		775,733
Other liabilities		275,768		981,711
Total liabilities		12,273,152		17,339,765
Preferred units		67,450		67,450
Partners' deficit		(1,640,716)		(364,343)
Total liabilities and partners' deficit	$	10,699,886	$	17,042,872
Our Share of:
Partners' deficit	$	(787,451)	$	(32,000)
Add: Excess Investment		2,007,617		714,515
Our net Investment in Unconsolidated Entities, at equity	$	1,220,166	$	682,515

Summary of investments in joint ventures and share of income from such joint ventures, statements of operations

	For the Three Months Ended March 31,
	2012		2011
STATEMENTS OF OPERATIONS
Revenue:
Minimum rent	$	368,666	$	352,635
Overage rent		48,694		30,227
Tenant reimbursements		172,093		165,620
Other income		52,962		31,661
Total revenue		642,415		580,143
Operating Expenses:
Property operating		118,119		111,562
Depreciation and amortization		138,056		131,730
Real estate taxes		48,333		45,853
Repairs and maintenance		14,971		16,770
Advertising and promotion		15,456		13,472
Provision for credit losses		982		804
Other		53,642		29,215
Total operating expenses		389,559		349,406
Operating Income		252,856		230,737
Interest expense		(159,902)		(150,516)
(Loss) income from unconsolidated entities		(315)		173
Net Income from Continuing Operations		92,639		80,394
(Loss)/income from discontinued joint venture interests		(7,690)		318
Net Income	$	84,949	$	80,712
Third-Party Investors' Share of Net Income	$	40,012	$	50,014
Our Share of Net Income		44,937		30,698
Amortization of Excess Investment		(14,584)		(12,077)
Income from Unconsolidated Entities	$	30,353	$	18,621

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Capital stock, total shares authorized	850,000,000	850,000,000
Capital stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Capital stock, shares of excess common stock	238,000,000	238,000,000
Capital stock, authorized shares of preferred stock	100,000,000	100,000,000
Preferred stock stated dividend rate percentage (as a percent)	8.375%	8.375%
Series J 8 3/8% cumulative redeemable preferred stock, shares authorized	1,000,000	1,000,000
Series J 8 3/8% cumulative redeemable preferred stock, shares issued	796,948	796,948
Series J 8 3/8% cumulative redeemable preferred stock, shares outstanding	796,948	796,948
Series J 8 3/8% cumulative redeemable preferred stock, liquidation value (in dollars)	$ 39,847	$ 39,847
Common stock held in treasury, shares	3,865,144	3,877,448
Common stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	511,990,000	511,990,000
Common stock, shares issued	306,954,102	297,725,698
Common stock, shares outstanding	306,954,102	297,725,698
Class B common stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	10,000	10,000
Common stock, shares issued	8,000	8,000
Common stock, shares outstanding	8,000	8,000

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Equity

3 Months Ended

Mar. 31, 2012

Equity

Equity

7.         Equity

            During the first three months of 2012, we issued 90,465 shares of common stock to 11 limited partners in exchange for an equal number of units.

            On March 14, 2012, we issued 9,137,500 shares of common stock in a public offering at a price of $137.00 per share. Proceeds of $1.2 billion from the offering, net of issue costs were used to fund a portion of the acquisition of our equity stake in Klépierre and the Mills transaction.

• Stock Based Compensation

            The Compensation Committee of our Board of Directors, or the Compensation Committee, awarded 12,034 shares of restricted stock to employees on March 5, 2012 and March 14, 2012 under The Simon Property Group, L.P. 1998 Stock Incentive Plan, or the Plan, at a fair market value of $138.41 per share and $141.12 per share, respectively. The fair market value of the restricted stock awarded on March 5, 2012 and March 14, 2012 is being recognized as expense over the three-year vesting service period.

            On March 16, 2010, the Compensation Committee of our Board approved three long-term incentive performance programs, or the 2010 LTIP programs, for certain senior executive officers. Awards under the 2010 LTIP programs take the form of LTIP units, a form of limited partnership interest issued by the Operating Partnership. During the performance period, participants are entitled to receive on the LTIP units awarded to them distributions equal to 10% of the regular quarterly distributions paid on a unit of the Operating Partnership. As a result, we account for these LTIP units as participating securities under the two-class method of computing earnings per share. Awarded LTIP units will be considered earned, in whole or in part, depending upon the extent to which the applicable total shareholder return, or TSR, benchmarks, as defined, are achieved during the performance period and, once earned, will become the equivalent of units after a two year service-based vesting period, beginning after the end of the performance period. Awarded LTIP units not earned are forfeited.

            The 2010 LTIP programs have one, two and three year performance periods, which end on December 31, 2010, 2011 and 2012, respectively. During July 2011, the Compensation Committee approved a three-year long-term incentive performance program, or the 2011-2013 LTIP program, and awarded LTIP units to certain senior executive officers. The 2011-2013 LTIP program has a three year performance period ending on December 31, 2013. During March 2012, the Compensation Committee approved a three-year long-term incentive performance program, or the 2012-2014 LTIP program, and awarded LTIP units to certain senior executive officers. The 2012-2014 LTIP program has a three year performance period ending December 31, 2014. After the end of each performance period, any earned LTIP units will then be subject to service-based vesting over a period of two years. One-half of the earned LTIP units will vest on January 1 of each of the second and third years following the end of the applicable performance period, subject to the participant maintaining employment with us through those dates.

            The 2010 LTIP program awards have an aggregate grant date fair value, adjusted for estimated forfeitures, of $7.2 million for the one-year program, $14.8 million for the two-year program and $23.0 million for the three-year program. The 2011-2013 LTIP program awards have an aggregate grant date fair value of $35.0 million, adjusted for estimated forfeitures. The 2012-2014 LTIP program awards have an aggregate grant date fair value of $35.0 million, adjusted for estimated forfeitures. Grant date fair values were estimated based upon the results of a Monte Carlo model, and the resulting expense will be recorded regardless of whether the TSR benchmarks are achieved. The grant date fair values are being amortized into expense over the period from the grant date to the date at which the awards, if any, become vested. In 2011, the Compensation Committee determined that 133,673 LTIP units were earned under the one-year 2010 LTIP program and, pursuant to the award agreements, will vest in two equal installments in 2012 and 2013. In the first quarter of 2012, the Compensation Committee determined that 337,006 LTIP units were earned under the two-year 2010 LTIP program and, pursuant to the award agreements, will vest in two equal installments in 2013 and 2014.

            On July 6, 2011, in connection with the execution of an employment agreement, the Compensation Committee granted David Simon, our Chairman and CEO, a retention award in the form of 1,000,000 LTIP units. The award vests in one-third increments on July 5^th of 2017, 2018 and 2019, subject to continued employment. The grant date fair value of the retention award was $120.3 million which is being recognized as expense over the eight-year term of his employment agreement on a straight-line basis.

• Changes in Equity

            The following table provides a reconciliation of the beginning and ending carrying amounts of total equity, equity attributable to common stockholders and equity attributable to noncontrolling interests:

	Preferred Stock		Common Stock		Accumulated Other Comprehensive Income (Loss)		Capital in Excess of Par Value		Accumulated Deficit		Common Stock Held in Treasury		Noncontrolling interests			Total Equity
January 1, 2012	$	45,047	$	30	$	(94,263)	$	8,103,133	$	(3,251,740)	$	(152,541)	$	894,622		$	5,544,288
Exchange of limited partner units for common shares								1,418						(1,418	)		—
Public offering of common stock				1				1,214,282									1,214,283
Issuance of limited partner units																	—
Other		(82)						1,370		(136)		1,705		10,368			13,225
Purchase of noncontrolling interest								(63,226)						58,559			(4,667)
Adjustment to limited partners' interest from increased ownership in the Operating Partnership								(163,845)						163,845			—
Distributions to common stockholders and limited partners, excluding Operating Partnership preferred interests										(280,034)				(57,907	)		(337,941)
Distributions to other noncontrolling interest partners														(191	)		(191)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity						70,543				646,244				147,750			864,537
March 31, 2012	$	44,965	$	31	$	(23,720)	$	9,093,132	$	(2,885,666)	$	(150,836)	$	1,215,628		$	7,293,534

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Debt

3 Months Ended

Mar. 31, 2012

Debt

Debt

6.         Debt

• Unsecured Debt

            At March 31, 2012, our unsecured debt consisted of $12.3 billion of senior unsecured notes of the Operating Partnership, $160.0 million outstanding on an unsecured term loan, or Term Loan, and $1.9 billion outstanding under an unsecured revolving credit facility, or Credit Facility. The March 31, 2012 balance included $270.7 million (U.S. dollar equivalent) of Yen-denominated borrowings and $1.0 billion (U.S. dollar equivalent) of Euro-denominated borrowings which are designated as net investment hedges of our international investments. On March 31, 2012, we had available borrowing capacity of approximately $2.0 billion under the Credit Facility and $740.0 million of borrowing capacity under the Term Loan. The maximum outstanding balance of the Credit Facility during the three months ended March 31, 2012 was $3.1 billion and the weighted average outstanding balance on the Credit Facility was approximately $1.3 billion. Letters of credit of approximately $36.0 million were outstanding under the Credit Facility as of March 31, 2012.

            The Credit Facility provides an initial borrowing capacity of $4.0 billion which can be increased at our option to $5.0 billion during its term. The Credit Facility will initially mature on October 30, 2015 and can be extended for an additional year at our sole option. The base interest rate on the Credit Facility is LIBOR plus 100 basis points with an additional facility fee of 15 basis points. In addition, the Credit Facility provides for a money market competitive bid option program that allows us to hold auctions to achieve lower pricing for short-term borrowings. The Credit Facility also includes a $2.0 billion multi-currency tranche.

            On March 13, 2012, the Operating Partnership issued $600.0 million of senior unsecured notes at a fixed interest rate of 2.15% with a maturity date of September 2017, $600.0 million of senior unsecured notes at a fixed interest rate of 3.375% with a maturity date of March 2022, and $550.0 million of senior unsecured notes at a fixed interest rate of 4.75% with a maturity date of March 2042. Proceeds from the unsecured notes offerings were used to fund a portion of the cost of the acquisition of our equity stake in Klépierre and the Mills transaction.

            During the three months ended March 31, 2012, we redeemed at par $74.2 million of senior unsecured notes with a fixed rate of 5.75%.

            On November 1, 2011, we entered into a Term Loan providing a $900.0 million borrowing capacity. The Term Loan will initially mature on July 30, 2013 and can be extended for an additional year at our sole option. The base interest rate on the Term Loan is LIBOR plus 100 basis points. We drew $160.0 million on the Term Loan in the first quarter of 2012.

• Secured Debt

            Total secured indebtedness was $8.3 billion and $6.8 billion at March 31, 2012 and December 31, 2011, respectively. During the three months ended March 31, 2012, we repaid $237.8 million in mortgage loans with a weighted average interest rate of 2.36%, unencumbering six properties, and repaid our $735.0 million secured term loan.

            As a result of the acquisition of additional interests in properties in the Mills transaction in March 2012, as further discussed in Note 5, we consolidated nine properties encumbered by property-level mortgage debt totaling $2.6 billion. This property-level mortgage debt was previously presented as debt of our unconsolidated entities. We and our joint venture partner had equal ownership in these properties prior to the transaction.

• Covenants

            Our unsecured debt contains financial covenants and other non-financial covenants. If we were to fail to comply with these covenants, after the expiration of the applicable cure periods, the debt maturity could be accelerated or other remedies could be sought by the lender including adjustments to the applicable interest rate. As of March 31, 2012, we are in compliance with all covenants of our unsecured debt.

            At March 31, 2012, we or our subsidiaries are the borrowers under 91 non-recourse mortgage notes secured by mortgages on 91 properties, including 8 separate pools of cross-defaulted and cross-collateralized mortgages encumbering a total of 38 properties. Under these cross-default provisions, a default under any mortgage included in the cross-defaulted pool may constitute a default under all mortgages within that pool and may lead to acceleration of the indebtedness due on each property within the pool. Certain of our secured debt contain financial and other non-financial covenants which are specific to the properties which serve as collateral for that debt. If the borrower fails to comply with these covenants, the lender could accelerate the debt and enforce its right against their collateral. At March 31, 2012, the applicable borrowers under these non-recourse mortgage notes were in compliance with all covenants where non-compliance individually, or giving effect to applicable cross-default provisions in the aggregate, could have a material adverse effect on our financial condition, results of operations or cash flows.

• Fair Value of Debt

            The carrying value of our variable-rate mortgages and other loans approximates their fair values. We estimate the fair values of consolidated fixed-rate mortgages using cash flows discounted at current borrowing rates and other indebtedness using cash flows discounted at current market rates. We estimate the fair values of consolidated fixed-rate unsecured notes using quoted market prices, or, if no quoted market prices are available, we use quoted market prices for securities with similar terms and maturities. The book value of our consolidated fixed-rate mortgages and other indebtedness was $20.0 billion and $15.9 billion as of March 31, 2012 and December 31, 2011, respectively. The fair values of these financial instruments and the related discount rate assumptions as of March 31, 2012 and December 31, 2011 are summarized as follows:

	March 31, 2012		December 31, 2011
Fair value of fixed-rate mortgages and other indebtedness	$	21,894	$	17,905
Weighted average discount rates assumed in calculation of fair value for fixed-rate mortgages		3.73%		3.60%

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Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Marketable and Non-Marketable Securities
Net unrealized gains (losses) recorded in other comprehensive income (loss)	$ 66.4	$ 41.9
Value of non-marketable security accounted for under the cost method	105.1	105.1
Available for sale securities | Securities in captive insurance subsidiary portfolio | Minimum
Marketable and Non-Marketable Securities
Investment maturity period (in years)	1
Available for sale securities | Securities in captive insurance subsidiary portfolio | Maximum
Marketable and Non-Marketable Securities
Investment maturity period (in years)	10
Available for sale securities | Liberty
Marketable and Non-Marketable Securities
Aggregate unrealized gain (loss) on available-for-sale investments, net	63.9	39.7
Available for sale securities | CSCG
Marketable and Non-Marketable Securities
Number of shares owned	35.4
Carrying value of investment	187.3	170.7
Available for sale securities | CAPC
Marketable and Non-Marketable Securities
Number of shares owned	35.4
Carrying value of investment	108.4	100.9
Held-to-maturity securities
Marketable and Non-Marketable Securities
Investments used to fund debt service requirements	$ 25.2	$ 24.9

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Debt (Tables)

3 Months Ended

Mar. 31, 2012

Debt

Schedule of fair value of fixed rate mortgages and the related discount rate assumptions

	March 31, 2012		December 31, 2011
Fair value of fixed-rate mortgages and other indebtedness	$	21,894	$	17,905
Weighted average discount rates assumed in calculation of fair value for fixed-rate mortgages		3.73%		3.60%

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2012

Significant Accounting Policies

Cash and Cash Equivalents

• Cash and Cash Equivalents

            We consider all highly liquid investments purchased with an original maturity of 90 days or less to be cash and cash equivalents. Cash equivalents are carried at cost, which approximates fair value. Cash equivalents generally consist of commercial paper, bankers' acceptances, Eurodollars, repurchase agreements, and money market deposits or securities. Financial instruments that potentially subject us to concentrations of credit risk include our cash and cash equivalents and our trade accounts receivable. We place our cash and cash equivalents with institutions with high credit quality. However, at certain times, such cash and cash equivalents are in excess of FDIC and SIPC insurance limits.

Marketable and Non-Marketable Securities

• Marketable and Non-Marketable Securities

            Marketable securities consist primarily of the investments of our captive insurance subsidiaries, available-for-sale securities, our deferred compensation plan investments, and certain investments held to fund the debt service requirements of debt previously secured by investment properties that have been sold.

            The types of securities included in the investment portfolio of our captive insurance subsidiaries typically include U.S. Treasury or other U.S. government securities as well as corporate debt securities with maturities ranging from less than 1 to 10 years. These securities are classified as available-for-sale and are valued based upon quoted market prices or other observable inputs when quoted market prices are not available. The amortized cost of debt securities, which approximates fair value, held by our captive insurance subsidiaries is adjusted for amortization of premiums and accretion of discounts to maturity. Changes in the values of these securities are recognized in accumulated other comprehensive income (loss) until the gain or loss is realized or until any unrealized loss is deemed to be other-than-temporary. We review any declines in value of these securities for other-than-temporary impairment and consider the severity and duration of any decline in value. To the extent an other-than-temporary impairment is deemed to have occurred, an impairment charge is recorded and a new cost basis is established. Subsequent changes are then recognized through other comprehensive income (loss) unless another other-than-temporary impairment is deemed to have occurred.

            Our investments in Capital Shopping Centres Group PLC, or CSCG, and Capital & Counties Properties PLC, or CAPC, are accounted for as available-for-sale securities. These investments are adjusted to their quoted market price, including a related foreign exchange component, with corresponding adjustment in other comprehensive income (loss). At March 31, 2012, we owned 35.4 million shares each of CSCG and of CAPC. At March 31, 2012, the market value of our investments in CSCG and CAPC was $187.3 million and $108.4 million, respectively, with an aggregate net unrealized gain on these investments of approximately $63.9 million. The market value of our investments in CSCG and CAPC at December 31, 2011 was $170.7 million and $100.9 million, respectively, with an aggregate unrealized gain of $39.7 million.

            Net unrealized gains recorded in other comprehensive income (loss) as of March 31, 2012 and December 31, 2011 were approximately $66.4 million and $41.9 million, respectively, and represent the valuation and related currency adjustments for our marketable securities. As of March 31, 2012, we do not consider any of the declines in value of our marketable and non-marketable securities to be an other-than-temporary impairment, as these market value declines, if any, have existed for a short period of time, and, in the case of debt securities, we have the ability and intent to hold these securities to maturity.

            Our insurance subsidiaries are required to maintain statutory minimum capital and surplus as well as maintain a minimum liquidity ratio. Therefore, our access to these securities may be limited. Our deferred compensation plan investments are classified as trading securities and are valued based upon quoted market prices. The investments have a matching liability as the amounts are fully payable to the employees that earned the compensation. Changes in value of these securities and changes to the matching liability to employees are both recognized in earnings and, as a result, there is no impact to consolidated net income.

            As of March 31, 2012 and December 31, 2011, we also had investments of $25.2 million and $24.9 million, respectively, which must be used to fund the debt service requirements of mortgage debt related to investment properties sold that previously collateralized the debt. These investments are classified as held-to-maturity and are recorded at amortized cost as we have the ability and intent to hold these investments to maturity.

            At March 31, 2012 and December 31, 2011, we had investments of $105.1 million in non-marketable securities that we account for under the cost method. We regularly evaluate these investments for any other-than-temporary impairment in their estimated fair value and determined that no adjustment in the carrying value was required.

Loans Held for Investment

• Loans Held for Investment

            From time to time, we may make investments in mortgage loans or mezzanine loans of third parties that own and operate commercial real estate assets located in the United States. Mortgage loans are secured, in part, by mortgages recorded against the underlying properties which are not owned by us. Mezzanine loans are secured, in part, by pledges of ownership interests of the entities that own the underlying real estate. Loans held for investment are carried at cost, net of any premiums or discounts which are accreted or amortized over the life of the related loan receivable utilizing the effective interest method. We evaluate the collectability of both interest and principal of each of these loans quarterly to determine whether the value has been impaired. A loan is deemed to be impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the existing contractual terms. When a loan is impaired, the amount of the loss accrual is calculated by comparing the carrying amount of the loan held for investment to its estimated realizable value.

            At March 31, 2012 and December 31, 2011, we had investments in three mortgage and mezzanine loans with an aggregate carrying value of $162.9 million and $162.8 million, respectively. These loans mature at various dates through October 2012 with a weighted average maturity of approximately three months. Certain of these loans require interest-only payments while others require payments of interest and principal based on a 30 year amortization. Interest rates on these loans are fixed between 5.9% and 7.0% per annum with a weighted average interest rate of approximately 6.3% and approximate market rates for instruments of similar quality and duration. During the three months ended March 31, 2012 and March 31 2011, we recorded $3.1 million and $6.9 million, respectively, in interest income earned from these loans held for investment. Payments on each of these loans were current as of March 31, 2012. In April 2012, one of these mortgage loans with a principal balance of $76.7 million was repaid in its entirety.

            On December 9, 2011, we paid consideration of $88.8 million to acquire a 50% equity interest in two real estate developments for which we are the construction lender. The loans primarily bear interest at 7.0% and mature in May and July 2013. At March 31, 2012 and December 31, 2011, the aggregate amount drawn on the loans was $82.3 million and $50.7 million, respectively. We consolidated these assets as of the date we acquired our equity interest and, accordingly, amounts drawn on the loans are eliminated in consolidation.

Fair Value Measurements

• Fair Value Measurements

            We hold marketable securities that totaled $451.2 million and $417.0 million at March 31, 2012 and December 31, 2011, respectively, and are considered to have Level 1 fair value inputs. In addition, we have derivative instruments which are classified as having Level 2 inputs which consist primarily of interest rate swap agreements and foreign currency forward contracts with a gross liability balance of $8.4 million and $12.2 million at March 31, 2012 and December 31, 2011, respectively, and a gross asset value of $1.2 million and $14.9 million at March 31, 2012 and December 31, 2011, respectively. We also have interest rate cap agreements with nominal asset values.

            Level 1 fair value inputs are quoted prices for identical items in active, liquid and visible markets such as stock exchanges. Level 2 fair value inputs are observable information for similar items in active or inactive markets, and appropriately consider counterparty creditworthiness in the valuations. Level 3 fair value inputs reflect our best estimate of inputs and assumptions market participants would use in pricing an asset or liability at the measurement date. The inputs are unobservable in the market and significant to the valuation estimate.

            Note 6 includes a discussion of the fair value of debt measured using Level 1 and Level 2 inputs. Note 5 includes a discussion of the fair values recorded in purchase accounting and impairment, using Level 2 and Level 3 inputs. Level 3 inputs to our purchase accounting and impairment include our estimations of net operating results of the property, capitalization rates and discount rates.

Noncontrolling Interests and Temporary Equity

• Noncontrolling Interests and Temporary Equity

            Details of the carrying amount of our noncontrolling interests are as follows:

	As of March 31, 2012		As of December 31, 2011
Limited partners' interests in the Operating Partnership	$	1,216,247	$	953,622
Nonredeemable noncontrolling deficit interests in properties, net		(619)		(59,000)
Total noncontrolling interests reflected in equity	$	1,215,628	$	894,622

            The remaining interest in a property or portfolio of properties which are redeemable at the option of the holder or in circumstances that may be outside our control, are accounted for as temporary equity within limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests in properties in the accompanying consolidated balance sheets. The carrying amount of the noncontrolling interest is adjusted to the redemption amount assuming the instrument is redeemable at the balance sheet date. Changes in the redemption value of the underlying noncontrolling interest are recorded within accumulated deficit. There are no noncontrolling interests redeemable at amounts in excess of fair value.

            Net income attributable to noncontrolling interests (which includes nonredeemable noncontrolling interests in consolidated properties, limited partners' interests in the Operating Partnership, redeemable noncontrolling interests in consolidated properties and preferred distributions payable by the Operating Partnership) is a component of consolidated net income. In addition, the individual components of other comprehensive income (loss) are presented in the aggregate for both controlling and noncontrolling interests, with the portion attributable to noncontrolling interests deducted from comprehensive income attributable to common stockholders.

            A rollforward of noncontrolling interests reflected in equity is as follows:

	For the Three Months Ended March 31,
	2012		2011
Noncontrolling interests, beginning of period	$	894,622	$	802,972
Net Income attributable to noncontrolling interests after preferred distributions and income attributable to redeemable noncontrolling interests in consolidated properties		133,010		38,941
Distributions to noncontrolling interest holders		(58,098)		(70,393)
Other comprehensive income allocable to noncontrolling interests:
Unrealized gain (loss) on interest rate hedge agreements		2,401		(1,900)
Net loss on derivative instruments reclassified from accumulated comprehensive loss into interest expense		858		671
Currency translation adjustments		7,523		3,739
Changes in available-for-sale securities and other		3,958		343
		14,740		2,853
Adjustment to limited partners' interest from increased (decreased) ownership in the Operating Partnership		163,845		(5,638)
Units issued to limited partners		—		202
Units exchanged for common shares		(1,418)		(2,211)
Purchase of noncontrolling interest and other		68,927		4,426
Noncontrolling interests, end of period	$	1,215,628	$	771,152

Derivative Financial Instruments

• Derivative Financial Instruments

            We record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. We use a variety of derivative financial instruments in the normal course of business to selectively manage or hedge the risks associated with our indebtedness and interest payments. Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements. To accomplish this objective, we primarily use interest rate swaps and caps. We require that hedging derivative instruments be highly effective in reducing the risk exposure that they are designated to hedge. As a result, there was no significant ineffectiveness from any of our derivative activities during the period. We formally designate any instrument that meets these hedging criteria as a hedge at the inception of the derivative contract. We have no credit-risk-related hedging or derivative activities.

            As of March 31, 2012, we had the following outstanding interest rate derivatives related to interest rate risk:

Interest Rate Derivative	Number of Instruments		Notional Amount
Interest Rate Swaps		3	$485.2 million
Interest Rate Caps		6	$445.4 million

            The carrying value of our interest rate swap agreements, at fair value, is a net liability balance of $8.4 million and $10.0 million at March 31, 2012 and December 31, 2011, respectively, and is included in other liabilities and accrued dividends. The interest rate cap agreements were of nominal value at March 31, 2012 and December 31, 2011 and we generally do not apply hedge accounting to these arrangements.

            We are also exposed to fluctuations in foreign exchange rates on financial instruments which are denominated in foreign currencies, primarily in Japan and Europe. We use currency forward contracts and foreign currency denominated debt to manage our exposure to changes in foreign exchange rates on certain Yen and Euro-denominated receivables and net investments. Currency forward contracts involve fixing the Yen:USD or Euro:USD exchange rate for delivery of a specified amount of foreign currency on a specified date. The currency forward contracts are typically cash settled in US dollars for their fair value at or close to their settlement date. Approximately ¥5.0 billion remains as of March 31, 2012 for all forward contracts. We entered into Yen:USD forward contracts during 2010 for approximately ¥1.7 billion that we expect to receive through October 2012 and we entered into Yen:USD forward contracts during 2011 for ¥3.8 billion that we expect to receive through October 2013. In 2012, we entered into additional Yen:USD forward contracts for approximately ¥2.5 billion that we expect to receive through January 5, 2015. The March 31, 2012 net asset balance related to these forward contracts was $1.2 million which is included in deferred costs and other assets. We have reported the changes in fair value for these forward contracts in earnings. The underlying currency adjustments on the foreign currency denominated receivables are also reported in income and generally offset the amounts in earnings for these forward contracts.

            In 2011, we entered into a Euro:USD forward contract with a €141.3 million notional value which was designated as a net investment hedge. The December 31, 2011 asset balance related to this forward was $14.9 million and is included in deferred costs and other assets. We apply hedge accounting and the change in fair value for this Euro forward contract is reflected in other comprehensive income. Changes in the value of this hedge are offset by changes in the underlying hedged Euro-denominated joint venture investment. In connection with our sale of Gallerie Commerciali Italia, or GCI, as further discussed in Note 5, this hedge was terminated in January 2012.

            The total gross accumulated other comprehensive loss related to our derivative activities, including our share of the other comprehensive loss from joint venture properties, approximated $99.0 million and $115.8 million as of March 31, 2012 and December 31, 2011, respectively.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2012

Commitments and Contingencies

Commitments and Contingencies

8.         Commitments and Contingencies

• Litigation

            We are involved from time-to-time in various legal proceedings that arise in the ordinary course of our business, including, but not limited to commercial disputes, environmental matters, and litigation in connection with transactions including acquisitions and divestitures. We believe that such litigation, claims and administrative proceedings will not have a material adverse impact on our financial position or our results of operations. We record a liability when a loss is considered probable and the amount can be reasonably estimated.

            In May 2010, Opry Mills sustained significant flood damage. Insurance proceeds of $50 million have been funded by the insurers and remediation work has been completed. The property was re-opened March 29, 2012. The excess insurance carriers (those providing coverage above $50 million) have denied the claim under the policy for additional proceeds (of up to $150 million) to pay further amounts for restoration costs and business interruption losses. We and our lenders are continuing our efforts through pending litigation to recover our losses under the excess insurance policies for Opry Mills and we believe recovery is probable, but no assurances can be made that our efforts to recover these funds will be successful.

• Guarantees of Indebtedness

            Joint venture debt is the liability of the joint venture and is typically secured by the joint venture property, which is non-recourse to us. As of March 31, 2012 and December 31, 2011, the Operating Partnership guaranteed joint venture related mortgage or other indebtedness of $113.4 million and $30.2 million, respectively. Mortgages guaranteed by us are secured by the property of the joint venture and that property could be sold in order to satisfy the outstanding obligation.

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Real Estate Acquisitions and Dispositions

3 Months Ended

Mar. 31, 2012

Real Estate Acquisitions and Dispositions

Real Estate Acquisitions and Dispositions

9.         Real Estate Acquisitions and Dispositions

            On March 22, 2012, as part of the Mills transaction discussed in Note 5, we acquired additional interests in 26 of our joint venture properties in a transaction valued at approximately $1.5 billion.

            On March 14, 2012, as discussed in Note 5, we acquired a 28.7% equity stake in Klépierre for approximately $2.0 billion, including the capitalization of acquisition costs.

            On January 9, 2012, as discussed in Note 5, we sold our entire ownership interest in GCI to our venture partner, Auchan S.A.

            On January 6, 2012, as discussed in Note 5, we purchased an additional 25% interest in Del Amo Fashion Center.

            During the first quarter of 2012, we sold one of our other retail properties with a carrying value of $115.0 million for nominal consideration and the assumption of the related mortgage debt of $115.0 million by the acquirer.

            On December 31, 2011, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner. As a result, we have a 100% interest in and now consolidate the six properties we received in the distribution. The distribution resulted in a remeasurement of the distributed assets to estimated fair value and a corresponding non-cash gain of approximately $168.3 million in the fourth quarter of 2011 representing the estimated fair value of the net assets received in excess of the carrying value of our interest in the joint venture portfolio. The resulting gain and the asset and liability fair value allocation were recorded based on preliminary portfolio fair value estimates at the date of distribution and will be finalized during 2012.

            On August 25, 2011, we acquired additional controlling interests of approximately 83.75% in King of Prussia thereby increasing our ownership interest to 96.1%. The property is subject to a $160.1 million mortgage. The consolidation of this previously unconsolidated property resulted in a remeasurement of our previously held interest to fair value and a corresponding non-cash gain of $82.9 million in the third quarter of 2011.

            We expense acquisition and potential acquisition costs related to business combinations and disposition related costs as they are incurred. We incurred a minimal amount of transaction expenses during the three months ended March 31, 2012 and 2011.

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Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Significant Accounting Policies

Details of carrying amount of noncontrolling interests

	As of March 31, 2012		As of December 31, 2011
Limited partners' interests in the Operating Partnership	$	1,216,247	$	953,622
Nonredeemable noncontrolling deficit interests in properties, net		(619)		(59,000)
Total noncontrolling interests reflected in equity	$	1,215,628	$	894,622

Rollforward of noncontrolling interests reflected in equity

	For the Three Months Ended March 31,
	2012		2011
Noncontrolling interests, beginning of period	$	894,622	$	802,972
Net Income attributable to noncontrolling interests after preferred distributions and income attributable to redeemable noncontrolling interests in consolidated properties		133,010		38,941
Distributions to noncontrolling interest holders		(58,098)		(70,393)
Other comprehensive income allocable to noncontrolling interests:
Unrealized gain (loss) on interest rate hedge agreements		2,401		(1,900)
Net loss on derivative instruments reclassified from accumulated comprehensive loss into interest expense		858		671
Currency translation adjustments		7,523		3,739
Changes in available-for-sale securities and other		3,958		343
		14,740		2,853
Adjustment to limited partners' interest from increased (decreased) ownership in the Operating Partnership		163,845		(5,638)
Units issued to limited partners		—		202
Units exchanged for common shares		(1,418)		(2,211)
Purchase of noncontrolling interest and other		68,927		4,426
Noncontrolling interests, end of period	$	1,215,628	$	771,152

Outstanding interest rate derivatives related to interest rate risk:

Interest Rate Derivative	Number of Instruments		Notional Amount
Interest Rate Swaps		3	$485.2 million
Interest Rate Caps		6	$445.4 million

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Equity (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended				1 Months Ended
	Mar. 31, 2012 partner	Mar. 14, 2012	Mar. 31, 2012 Restricted stock issued under 1998 Stock Incentive Plan	Mar. 31, 2012 2010 LTIP Program	Mar. 31, 2012 One-year 2010 LTIP Program Y installment	Dec. 31, 2011 One-year 2010 LTIP Program	Mar. 31, 2012 Two-year 2011 LTIP Program installment Y	Mar. 31, 2012 Three-year 2012 LTIP Program Y	Mar. 31, 2012 2011-2013 LTIP Program Y	Mar. 31, 2012 2012-2014 LTIP Program Y	Jul. 31, 2011 LTIP Retention Award to Chairman and CEO
Equity
The number of common stock shares issued in exchange for equal number of partnership units	90,465
Number of limited partners who received common stock	11
Shares of common stock issued in a public offering		9,137,500
Shares of common stock issued in a public offering, price (in dollars per share)		$ 137.00
Proceeds from common stock issued in a public offering	$ 1,200,000,000
Long Term Incentive Performance Programs
Award of restricted stock to employees (in shares)			12,034			133,673					1,000,000
Award of restricted stock to employees, fair market value, March 5th (in dollars per share)			$ 138.41
Award of restricted stock to employees, fair market value, March 14th (in dollars per share)			$ 141.12
Vesting period (in years)			3 years	2 years			2 years	2 years	2 years	2 years	8 years
Vesting rights				one-half							one-third
Percent of distributions of Operating Partnership that participants are entitled to receive during performance period				10.00%
Performance period (in years)					1		2	3	3	3
Aggregate grant date fair value					$ 7,200,000		$ 14,800,000	$ 23,000,000	$ 35,000,000	$ 35,000,000	$ 120,300,000
Units earned							337,006
Vesting period (in installments)					2		2

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Organization (Details)	Mar. 22, 2012 The Mills acquisition property	Mar. 31, 2012 U.S. and Puerto Rico property	Mar. 31, 2012 U.S. and Puerto Rico The Mills acquisition property	Mar. 31, 2012 U.S. and Puerto Rico Regional Malls property	Mar. 31, 2012 U.S. and Puerto Rico Premium Outlet Centers property	Mar. 31, 2012 U.S. and Puerto Rico Community/Lifestyle Centers property	Mar. 31, 2012 U.S. and Puerto Rico Other shopping centers or outlet centers property	Mar. 31, 2012 Japan Premium Outlet Centers property	Mar. 31, 2012 South Korea Premium Outlet Centers property	Mar. 31, 2012 Mexico Premium Outlet Centers property	Mar. 31, 2012 Malaysia Premium Outlet Centers property	Mar. 31, 2012 Europe country property	Mar. 14, 2012 Europe
Owned, developed and managed retail properties:
Number of income-producing properties	9
Number of income-producing properties		325	13	161	58	70	23	8	2	1	1	271
Number of U.S. states containing property locations		41
Number of countries												13
Interest in income-producing properties, under joint venture arrangements (as a percent)													28.70%

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Significant Accounting Policies (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Noncontrolling interests, carrying amounts, reclassified to permanent equity:
Limited partners' interests in the Operating Partnership	$ 1,216,247	$ 953,622
Nonredeemable noncontrolling deficit interests in properties, net	(619)	(59,000)
Total noncontrolling interests reflected in equity	$ 1,215,628	$ 894,622

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated Net Income	$ 781,829	$ 219,666
Adjustments to reconcile consolidated net income to net cash provided by operating activities -
Depreciation and amortization	298,502	274,279
(Gain) loss upon acquisition of controlling interests, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net	(494,837)	584
Straight-line rent	(7,427)	(5,888)
Equity in income of unconsolidated entities	(30,353)	(18,621)
Distributions of income from unconsolidated entities	27,887	22,435
Changes in assets and liabilities -
Tenant receivables and accrued revenue, net	77,613	59,945
Deferred costs and other assets	(71,948)	(47,513)
Accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities	(8,312)	(52,582)
Net cash provided by operating activities	572,954	452,305
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions	(3,618,399)
Repayments of loans from related parties	92,600
Capital expenditures, net	(124,248)	(59,711)
Cash impact from the consolidation of properties	91,170
Net proceeds from sale of assets	375,838	3,438
Investments in unconsolidated entities	(61,744)	(2,763)
Purchase of marketable and non-marketable securities	(7,245)	(8,830)
Distributions of capital from unconsolidated entities and other	76,721	55,837
Net cash used in investing activities	(3,175,307)	(12,029)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sales of common stock and other, net of transaction costs	1,214,086	359
Distributions to noncontrolling interest holders in properties	(5,110)	(22,101)
Contributions from noncontrolling interest holders in properties		52
Preferred distributions of the Operating Partnership	(479)	(479)
Preferred dividends and distributions to stockholders	(280,034)	(235,283)
Distributions to limited partners	(57,907)	(48,292)
Proceeds from issuance of debt, net of transaction costs	4,056,144
Repayments of debt	(2,242,448)	(295,200)
Net cash provided by (used in) financing activities	2,684,252	(600,944)
INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS	81,899	(160,668)
CASH AND CASH EQUIVALENTS, beginning of period	798,650	796,718
CASH AND CASH EQUIVALENTS, end of period	$ 880,549	$ 636,050

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Investment in Unconsolidated Entities

3 Months Ended

Mar. 31, 2012

Investment in Unconsolidated Entities

Investment in Unconsolidated Entities

5.         Investment in Unconsolidated Entities

• Real Estate Joint Ventures

            Joint ventures are common in the real estate industry. We use joint ventures to finance properties, develop new properties, and diversify our risk in a particular property or portfolio of properties. We held joint venture ownership interests in 78 properties in the United States as of March 31, 2012 and 87 properties as of December 31, 2011. At March 31, 2012, we also held interests in eight joint venture properties in Japan, two joint venture properties in South Korea, one joint venture property in Mexico, and one joint venture property in Malaysia. We account for these joint venture properties using the equity method of accounting. As discussed below, on January 9, 2012, we sold our interest in GCI which owns 45 properties located in Italy. Additionally, on March 14, 2012, we purchased a 28.7% equity stake in Klépierre.

            Certain of our joint venture properties are subject to various rights of first refusal, buy-sell provisions, put and call rights, or other sale or marketing rights for partners which are customary in real estate joint venture agreements and our industry. We and our partners in these joint ventures may initiate these provisions (subject to any applicable lock up or similar restrictions), which may result in either the sale of our interest or the use of available cash or borrowings, or the use of limited partnership interests in the Operating Partnership, to acquire the joint venture interest from our partner.

• Unconsolidated Property Transactions

            On January 6, 2012, SPG-FCM Ventures, LLC, or SPG-FCM, which holds our investment in the Mills Limited Partnership, or TMLP, distributed its interest in Del Amo Fashion Center to SPG-FCM's joint venture partners. We purchased our venture partner's 25% interest for $50.0 million, which increased our ownership in the property to 50%. As a part of the transaction, we and our venture partner each contributed $50.0 million to SPG-FCM which was used to pay down TMLP's senior loan and the loan we made to SPG-FCM, as discussed below.

            On March 22, 2012, we acquired additional interests in 26 properties previously held in TMLP, or the Mills transaction, from our joint venture partner. The transaction resulted in 16 of the properties remaining unconsolidated, the consolidation of nine previously unconsolidated properties and the purchase of the remaining noncontrolling interest in a previously consolidated property. The transaction was valued at $1.5 billion, which included repayment of the remaining $562.1 million balance on TMLP's senior loan facility, and retirement of $100.0 million of TMLP's trust preferred securities. In connection with the transaction, our $558.4 million loan to SPG-FCM was extinguished on a non-cash basis. We consolidated approximately $2.6 billion in additional property-level mortgage debt in connection with this transaction. This property-level mortgage debt was previously presented as debt of our unconsolidated entities. We and our joint venture partner had equal ownership in these properties prior to the transaction.

            The consolidation of the previously unconsolidated properties resulted in a remeasurement of our previously held interest in each of these properties to fair value and recognition of a corresponding non-cash gain of $488.7 million. In addition, we recorded an other-than-temporary impairment charge of $22.4 million for the excess of carrying value of our remaining investment in SPG-FCM over its estimated fair value. The gain on the transaction and impairment charge are included in Gain (loss) upon acquisition of controlling interests, sale or disposal of assets and interests in unconsolidated entities, and impairment charge on investment in unconsolidated entities, net in the accompanying consolidated statements of operations and comprehensive income. The assets and liabilities of the newly consolidated properties acquired in the Mills transaction have been reflected at their estimated fair value at the acquisition date, the majority of which, approximately $4.3 billion, was allocated to the investment property. This purchase price allocation is preliminary and is subject to revision within the measurement period, not to exceed one year from the date of acquisition.

            On December 31, 2011, as discussed in Note 9, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner.

• Loan to SPG-FCM

            As discussed above, our loan to SPG-FCM was extinguished in the Mills transaction. During the three month periods ended March 31, 2012 and 2011, we recorded approximately $2.0 million and $2.5 million in interest income (net of inter-entity eliminations), related to this loan, respectively. The loan bore interest at a rate of LIBOR plus 275 basis points.

• International Joint Venture Investments

            We conduct our international operations through joint venture arrangements and account for all of our international joint venture investments using the equity method of accounting.

            European Joint Ventures.    At December 31, 2011, we had a 49% ownership interest in GCI. On January 9, 2012, we sold our entire ownership interest in GCI to our venture partner, Auchan S.A. The aggregate cash we received was $375.8 million and we recognized a gain on the sale of $28.8 million. Our investment carrying value included $39.5 million of accumulated losses related to currency translation and net investment hedge accumulated balances which had been recorded in accumulated other comprehensive income (loss).

            On March 14, 2012, we acquired a 28.7% equity stake in Klépierre for approximately $2.0 billion. At March 31, 2012, the carrying value of our investment including excess investment was $2.0 billion, including all related components of accumulated other comprehensive income (loss). At March 31, 2012, we owned 54,430,000 shares of Klépierre, which had a quoted market price of $34.69 per share. We account for our investment in Klépierre under the equity method as we have determined we have significant influence over its operations. Our share of the results of Klépierre during our ownership period was immaterial.

            Asian Joint Ventures.    We conduct our international Premium Outlet operations in Japan through a joint venture with Mitsubishi Estate Co., Ltd. We have a 40% ownership interest in this joint venture. The carrying amount of our investment in this joint venture was $337.6 million and $349.5 million as of March 31, 2012 and December 31, 2011, respectively, including all related components of accumulated other comprehensive income (loss). We conduct our international Premium Outlet operations in South Korea through a joint venture with Shinsegae International Co. We have a 50% ownership interest in this joint venture. The carrying amount of our investment in this joint venture was $48.4 million and $43.8 million as of March 31, 2012 and December 31, 2011, respectively, including all related components of accumulated other comprehensive income (loss).

Summary Financial Information

            A summary of our investments in joint ventures and share of income from our joint ventures, excluding Klépierre, follows. The statements of operations include amounts related to our investment in GCI, which was sold on January 9, 2012. In addition, we acquired additional controlling interests in The Plaza at King of Prussia and The Court at King of Prussia, or collectively, King of Prussia, on August 25, 2011 and nine properties in the Mills transaction on March 22, 2012. These previously unconsolidated properties are now consolidated properties as of the acquisition dates. Additionally, on December 31, 2011, we and our joint venture partner dissolved a venture in which we had a 50% interest and distributed a portfolio of properties previously held within the venture to us and our joint venture partner. The results of operations are classified as (loss)/income from discontinued joint venture interests in the accompanying joint venture statements of operations. Balance sheet information for the joint ventures is as follows:

	March 31, 2012		December 31, 2011
BALANCE SHEETS
Assets:
Investment properties, at cost	$	14,161,851	$	20,481,657
Less — accumulated depreciation		4,588,199		5,264,565
		9,573,652		15,217,092
Cash and cash equivalents		530,886		806,895
Tenant receivables and accrued revenue, net		190,922		359,208
Investment in unconsolidated entities, at equity		40,171		133,576
Deferred costs and other assets		364,255		526,101
Total assets	$	10,699,886	$	17,042,872
Liabilities and Partners' Deficit:
Mortgages and other indebtedness	$	11,468,736	$	15,582,321
Accounts payable, accrued expenses, intangibles, and deferred revenue		528,648		775,733
Other liabilities		275,768		981,711
Total liabilities		12,273,152		17,339,765
Preferred units		67,450		67,450
Partners' deficit		(1,640,716)		(364,343)
Total liabilities and partners' deficit	$	10,699,886	$	17,042,872
Our Share of:
Partners' deficit	$	(787,451)	$	(32,000)
Add: Excess Investment		2,007,617		714,515
Our net Investment in Unconsolidated Entities, at equity	$	1,220,166	$	682,515

            "Excess Investment" represents the unamortized difference of our investment over our share of the equity in the underlying net assets of the joint ventures acquired. We amortize excess investment over the life of the related properties, typically no greater than 40 years, and the amortization is included in the reported amount of income from unconsolidated entities.

	For the Three Months Ended March 31,
	2012		2011
STATEMENTS OF OPERATIONS
Revenue:
Minimum rent	$	368,666	$	352,635
Overage rent		48,694		30,227
Tenant reimbursements		172,093		165,620
Other income		52,962		31,661
Total revenue		642,415		580,143
Operating Expenses:
Property operating		118,119		111,562
Depreciation and amortization		138,056		131,730
Real estate taxes		48,333		45,853
Repairs and maintenance		14,971		16,770
Advertising and promotion		15,456		13,472
Provision for credit losses		982		804
Other		53,642		29,215
Total operating expenses		389,559		349,406
Operating Income		252,856		230,737
Interest expense		(159,902)		(150,516)
(Loss) income from unconsolidated entities		(315)		173
Net Income from Continuing Operations		92,639		80,394
(Loss)/income from discontinued joint venture interests		(7,690)		318
Net Income	$	84,949	$	80,712
Third-Party Investors' Share of Net Income	$	40,012	$	50,014
Our Share of Net Income		44,937		30,698
Amortization of Excess Investment		(14,584)		(12,077)
Income from Unconsolidated Entities	$	30,353	$	18,621

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Significant Accounting Policies (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Noncontrolling interests:
Balance, at beginning of period	$ 5,544,288
Other comprehensive income (loss) allocable to noncontrolling interests:
Unrealized loss on interest rate hedge agreements	11,692	(11,283)
Net loss on derivative instruments reclassified from accumulated other comprehensive income (loss) into interest expense	5,115	3,944
Currency translation adjustments	43,941	21,899
Changes in available-for-sale securities and other	24,535	2,241
Balance, at end of period	7,293,534
Noncontrolling interests
Noncontrolling interests:
Balance, at beginning of period	894,622	802,972
Net income attributable to noncontrolling interests after preferred distributions and income attributable to redeemable noncontrolling interests in consolidated properties	133,010	38,941
Distributions to noncontrolling interest holders	(58,098)	(70,393)
Other comprehensive income (loss) allocable to noncontrolling interests:
Unrealized loss on interest rate hedge agreements	2,401	(1,900)
Net loss on derivative instruments reclassified from accumulated other comprehensive income (loss) into interest expense	858	671
Currency translation adjustments	7,523	3,739
Changes in available-for-sale securities and other	3,958	343
Other comprehensive income (loss)	14,740	2,853
Adjustment to limited partners' interest from (decreased) increased ownership in the Operating Partnership	163,845	(5,638)
Units issued to limited partners		202
Units exchanged for common shares	(1,418)	(2,211)
Purchase of noncontrolling interest and other	68,927	4,426
Balance, at end of period	$ 1,215,628	$ 771,152

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Equity (Tables)

3 Months Ended

Mar. 31, 2012

Equity

Reconciliation of carrying amounts of equity

	Preferred Stock		Common Stock		Accumulated Other Comprehensive Income (Loss)		Capital in Excess of Par Value		Accumulated Deficit		Common Stock Held in Treasury		Noncontrolling interests			Total Equity
January 1, 2012	$	45,047	$	30	$	(94,263)	$	8,103,133	$	(3,251,740)	$	(152,541)	$	894,622		$	5,544,288
Exchange of limited partner units for common shares								1,418						(1,418	)		—
Public offering of common stock				1				1,214,282									1,214,283
Issuance of limited partner units																	—
Other		(82)						1,370		(136)		1,705		10,368			13,225
Purchase of noncontrolling interest								(63,226)						58,559			(4,667)
Adjustment to limited partners' interest from increased ownership in the Operating Partnership								(163,845)						163,845			—
Distributions to common stockholders and limited partners, excluding Operating Partnership preferred interests										(280,034)				(57,907	)		(337,941)
Distributions to other noncontrolling interest partners														(191	)		(191)
Comprehensive income, excluding $479 attributable to preferred interests in the Operating Partnership and $2,096 attributable to noncontrolling redeemable interests in properties in temporary equity						70,543				646,244				147,750			864,537
March 31, 2012	$	44,965	$	31	$	(23,720)	$	9,093,132	$	(2,885,666)	$	(150,836)	$	1,215,628		$	7,293,534