Significant Accounting Policies (Policies) |
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| Significant Accounting Policies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash and Cash Equivalents and Short-term Investments | Cash and Cash Equivalents and Short-term Investments 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 of high credit quality. However, at certain times, such cash and cash equivalents are in excess of Federal Deposit Insurance Corporation and Securities Investor Protection Corporation insurance limits. |
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| Equity Instruments and Debt Securities | Equity Instruments and Debt Securities Equity instruments and debt securities consist primarily of equity instruments, our deferred compensation plan investments, the debt securities of our captive insurance subsidiary, and certain investments held to fund the debt service requirements of debt previously secured by investment properties. At March 31, 2026 and December 31, 2025, we had equity instruments with readily determinable fair values of $34.4 million and $33.7 million, respectively. Changes in the fair value of these equity instruments are recorded in unrealized gains (losses) in fair value of publicly traded equity instruments and derivative instrument, net in our consolidated statements of operations and comprehensive income. At March 31, 2026 and December 31, 2025, we had equity instruments without readily determinable fair values of $332.5 million and $329.1 million, respectively, for which we have elected the measurement alternative. We regularly evaluate these investments for any impairment in their estimated fair value, as well as any observable price changes for an identical or similar equity instrument of the same issuer, and determined that no material adjustment in the carrying value was required for the three months ended March 31, 2026 and 2025. Our deferred compensation plan equity instruments 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. At March 31, 2026 and December 31, 2025, we held debt securities of $163.8 million and $161.6 million, respectively, in our captive insurance subsidiary. The types of securities included in the investment portfolio of our captive insurance subsidiary are typically U.S. Treasury or other U.S. government securities as well as corporate debt securities with maturities ranging from less than one year to ten 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 subsidiary 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 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 is recorded and a new cost basis is established. Our captive insurance subsidiary is 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. |
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| Fair Value Measurements | Fair Value Measurements 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. We have no investments for which fair value is measured on a recurring basis using Level 3 inputs. We have equity instruments with readily determinable fair values that are valued using Level 1 inputs. We have foreign currency forward contracts, interest rate cap and swap agreements that are valued using Level 2 inputs. We also have a bifurcated embedded derivative option that was a component of the €750.0 million exchangeable bonds issued in November 2023. This instrument is classified as primarily having Level 3 inputs and is further discussed in Note 3, within the Derivative Financial Instruments subsection and in Note 7.
Note 7 includes a discussion of the fair value of debt measured using Level 2 inputs. Notes 3, 4, and 6 include discussions of the fair values recorded in purchase accounting using Level 2 and Level 3 inputs. Level 3 inputs to our purchase accounting and impairment analyses include our estimations of fair value, based primarily on net operating results of the property, capitalization rates and discount rates. |
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| Noncontrolling Interests | Noncontrolling Interests Simon Details of the carrying amount of our noncontrolling interests are as follows:
Net income attributable to noncontrolling interests (which includes nonredeemable and redeemable noncontrolling interests in consolidated properties, limited partners’ interests in the Operating Partnership and preferred distributions payable by the Operating Partnership on its outstanding preferred units) 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. The Operating Partnership Our evaluation of the appropriateness of classifying the Operating Partnership’s common units of partnership interest, or units, held by Simon and the Operating Partnership's limited partners within permanent equity considered several significant factors. First, as a limited partnership, all decisions relating to the Operating Partnership’s operations and distributions are made by Simon, acting as the Operating Partnership’s sole general partner. The decisions of the general partner are made by Simon's Board of Directors or management. The Operating Partnership has no other governance structure. Secondly, the sole asset of Simon is its interest in the Operating Partnership. As a result, a share of common stock of Simon, or common stock, if owned by the Operating Partnership, is best characterized as being similar to a treasury share and thus not an asset of the Operating Partnership. Limited partners of the Operating Partnership have the right under the Operating Partnership’s partnership agreement to exchange their units for shares of common stock or cash, as selected by Simon as the sole general partner. Accordingly, we classify units held by limited partners in permanent equity because Simon may elect to issue shares of common stock to limited partners exercising their exchange rights rather than using cash. Under the Operating Partnership’s partnership agreement, the Operating Partnership is required to redeem units held by Simon only when Simon has repurchased shares of common stock. We classify units held by Simon in permanent equity because the decision to redeem those units would be made by Simon. Net income attributable to noncontrolling interests (which includes nonredeemable and redeemable noncontrolling interests in consolidated properties) is a component of consolidated net income. |
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| Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) Simon The total accumulated other comprehensive income (loss) related to Simon’s currency translation adjustment was ($263.8) million and ($278.3) million as of March 31, 2026 and December 31, 2025, respectively. The reclassifications out of accumulated other comprehensive income (loss) consisted of the following:
The Operating Partnership The total accumulated other comprehensive income (loss) related to the Operating Partnership’s currency translation adjustment was ($309.4) million and ($326.0) million as of March 31, 2026 and December 31, 2025, respectively. The reclassifications out of accumulated other comprehensive income (loss) consisted of the following:
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| New Accounting Pronouncements | New Accounting Pronouncements In November 2024, the FASB issued ASU 2024-03, “Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures,” to improve the disclosures about a public business entity’s expenses by providing more detailed information about the types of expenses in commonly presented expense captions. The standard will be effective for us for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. We are currently evaluating the impact that the adoption of this new standard will have on our consolidated financial statements and footnotes. In December 2025, the FASB issued ASU 2025-11, “Interim Reporting,” which is intended to improve the navigability of the required interim reporting disclosures and clarifies when that guidance is applicable. The amendments in the ASU will be effective for us for interim reporting periods within annual reporting periods beginning after December 15, 2027. We are currently evaluating the impact that the adoption of these amendments will have on our footnotes.
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