2.2.0.25falsefalse02020 - Disclosure - Summary of Significant Accounting Policies (Policies)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $FROM_Jan01_2010_TO_Dec31_2010http://www.sec.gov/CIK0000899881duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170EPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0pld_SignificantAccountingPoliciesPoliciesAbstractpldfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSignificant Accounting Policies (Policies) [Abstract]3false0us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Basis of Presentation and Consolidation. The accompanying consolidated financial statements are presented in our reporting currency, the U.S. dollar. All material intercompany transactions with consolidated entities have been eliminated. We consolidate all entities that are wholly owned and those in which we own less than 100% but control, as well as any variable interest entities in which we are the primary beneficiary. We evaluate our ability to control an entity and whether the entity is a variable interest entity (“VIE”) and we are the primary beneficiary through consideration of substantive terms of the arrangement to identify which enterprise has the power to direct the activities of a VIE that most significantly impacts the entity's economic performance and the obligation to absorb losses of the entity or the right to receive benefits from the entity.Basis of Presentation and Consolidation. The accompanying consolidated financial statements are presented in our reporting currency, the U.S. dollar.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription containing the entire organization, consolidation and basis of presentation of financial statements disclosure. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS140-4 and FIN46(R)-8 -Paragraph 8, C1, C7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 2-6 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 46R -Paragraph 4, 14, 15 falsefalseBasis of Presentation and Consolidation4false0us-gaap_Reclassificationsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Adjustments and Reclassifications. Certain amounts included in the accompanying consolidated financial statements for 2009 and 2008 have been reclassified to conform to the 2010 financial statements presentation. We reclassified certain balance sheet accounts (Investments In and Advances to Unconsolidated Investees, Notes Receivable Backed by Real Estate, and Assets Held for Sale) under Net Investments in Real Estate to more appropriately reflect the underlying substance of the assets. We reclassified $88.5 million from Accounts Payable and Accrued Expenses and $45.2 million from Accounts and Notes Receivable into Real Estate, Other Investments in our December 31, 2009 balance sheet due to the right of offset between asset and liability accounts associated with a substantial development project in the United Kingdom. We have evaluated all subsequent events for adjustment to or disclosure in these financial statements through the issuance of these financial statements.Adjustments and Reclassifications. Certain amounts included in the accompanying consolidated financial statements for 2009 and 2008 have been reclassifiedfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringClassifications in the current financial statements may be different from classifications in the prior year's financial statements. Disclose any material changes in classification including an explanation of the reason for the change and the areas impacted.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 2 -Section A -Paragraph 2 falsefalseAdjustments and Reclassifications5false0us-gaap_UseOfEstimatesus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Use of Estimates. The accompanying consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements, and revenue and expenses during the reporting period. Our actual results could differ from those estimates and assumptions. Although we believe the assumptions and estimates we made are reasonable and appropriate, as discussed in the applicable sections throughout these Consolidated Financial Statements, different assumptions and estimates could materially impact our reported results. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions and changes in market conditions could impact our future operating results.Use of Estimates. The accompanying consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principlesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvides an entity's explanation that the preparation of financial statements in conformity with generally accepted accounting principles requires the use of management estimates. Estimates used in the determination of carrying amounts of assets or liabilities, or in disclosure of gain or loss contingencies should be disclosed if known information available prior to issuance of the financial statements indicates that both of these criteria are met: (1) It is at least reasonably possible that the estimate of the effect on the financial statements of a condition, situation, or set of circumstances that existed at the date of the financial statements will change in the near term (less than one year from the date of issuance) due to one or more future confirming events, and (2) The effect of the change would be material to the financial statements. The disclosure should indicate the nature of the uncertainty and include an indication that it is at least reasonably possible that a change in the estimate will occur in the near term. Disclosure of the factors that cause the estimate to be sensitive to change also is encouraged. Entities also may identify those areas that are subject to significant estimates.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 11, 14 falsefalseUse Of Estimates6false0us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Foreign Operations. The U.S. dollar is the functional currency for our consolidated subsidiaries and unconsolidated investees operating in the United States and Mexico and certain of our consolidated subsidiaries that operate as holding companies for foreign investments. The functional currency for our consolidated subsidiaries and unconsolidated investees operating in countries other than the United States and Mexico is the principal currency in which the entity's assets, liabilities, income and expenses are denominated, which may be different from the local currency of the country of incorporation or the country where the entity conducts its operations. The functional currencies of our consolidated subsidiaries and unconsolidated investees generally include the British pound sterling, Canadian dollar, euro, Japanese yen and Korean won. The Chinese renminbi was also a functional currency through February 2009 and is included in discontinued operations. We are parties to business transactions denominated in these and other currencies. For our consolidated subsidiaries whose functional currency is not the U.S. dollar, we translate their financial statements into U.S. dollars at the time we consolidate those subsidiaries' financial statements. Generally, assets and liabilities are translated at the exchange rate in effect as of the balance sheet date. The resulting translation adjustments are included in the Accumulated Other Comprehensive Income (Loss) in ProLogis Shareholders' Equity. Certain balance sheet items, primarily equity-related accounts, are reflected at the historical exchange rate. Income statement accounts are translated using the average exchange rate for the period and income statement accounts that represent significant non-recurring transactions are translated at the rate in effect as of the date of the transaction. We translate our share of the net earnings or losses of our unconsolidated investees whose functional currency is not the U.S. dollar at the average exchange rate for the period. We and certain of our consolidated subsidiaries have intercompany and third party debt that is not denominated in the entity's functional currency. When the debt is remeasured against the functional currency of the entity, a gain or loss can result. The resulting adjustment is generally reflected in results of operations, unless it is intercompany debt that is deemed to be long-term in nature. The remeasurement of such long-term debt results in the recognition of a cumulative translation adjustment in Accumulated Other Comprehensive Income (Loss) in ProLogis Shareholders' Equity. Gains or losses are included in results of operations when transactions with a third party, denominated in a currency other than the entity's functional currency, are settled. We are subject to foreign currency risk due to potential fluctuations in exchange rates between certain foreign currencies and the U.S. dollar. A significant change in the value of the foreign currency of one or more countries where we have a significant investment would have an effect on our reported results of operations and financial position. Although we attempt to mitigate adverse effects by borrowing under debt agreements denominated in the same functional currency as the investment and, on occasion and when deemed appropriate, through the use of derivative contracts, there can be no assurance that those attempts to mitigate foreign currency risk will be successful. See our policy footnote on financial instruments and Note 18 for more information related to our derivative financial instruments.  Foreign Operations. The U.S. dollar is the functional currency for our consolidated subsidiaries and unconsolidated investees operating in the UnitedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes a reporting enterprise's accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 5, 7-20, 80 falsefalseForeign Operations7false0us-gaap_BusinessCombinationsPolicyus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Business Combinations. In December 2007, the Financial Standards Accounting Board (“FASB”) issued a new accounting standard for business combinations that we adopted January 1, 2009. This accounting standard requires most identifiable assets, liabilities, noncontrolling interests, and goodwill acquired in a business combination to be recorded at “full fair value”. This accounting standard broadened the scope of what qualifies as a business combination to include the acquisition of an operating property by us and our unconsolidated investees. Transaction costs related to the acquisition of a business that were previously capitalized are expensed under this standard. The transaction costs related to the acquisition of land and equity method investments continue to be capitalized. This accounting standard requires subsequent adjustments of tax uncertainties that occur after the purchase price allocation period to be recognized in earnings. Previously, these adjustments were recognized in the purchase price as an adjustment to goodwill. The initial adoption of this accounting standard did not have a material impact on our financial position or results of operations, although it may have a more significant impact in the future depending on our acquisition activity. When we acquire a business or individual operating properties, with the intention to hold the investment for the long-term, we allocate the purchase price to the various components of the acquisition based upon the fair value of each component. We estimate the following: the fair value of the buildings as if vacant; The fair value allocated to land is generally based on relevant market data. the market value of above and below market leases based upon our best estimate of current market rents; The value of each lease is recorded in either other assets or other liabilities, as appropriate. the value of costs to obtain tenants, primarily leasing commissions; These costs are recorded in other assets. the value of debt based on quoted market rates for the same or similar issues, or by discounting future cash flows using rates currently available for debt with similar terms and maturities; Any discount or premium is included in the principal amount. the value of any management contracts by discounting future expected cash flows under these contracts; and These contracts are recorded in other assets. the value of all other assumed assets and liabilities based on the best information available. We amortize the acquired assets or liabilities as follows: •        Above and below market leases are charged to rental income over the average remaining estimated life of the lease. •        Leasing commissions are charged to amortization expense over the average remaining estimated life of the lease. •        Debt discount or premium is charged to interest expense using the effective interest method over the remaining term of the related debt. •        Management contracts are charged against income over the remaining term of the contract. Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. A gain may be recognized to the extent the purchase price is less than the fair value of net tangible and intangible assets acquired. Business Combinations. In December 2007, the Financial Standards Accounting Board (“FASB”) issued a new accounting standard for businessfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDescribes how the entity accounts for completed business combinations (purchase method, acquisition method or combination of entities under common control). The policy description may include a general discussion of the purchase method or acquisition method of accounting (including for example, the treatment accorded contingent consideration, the identification of assets and liabilities, the purchase price allocation process, how the fair values of acquired assets and liabilities are determined) and the entity's specific application thereof. An entity that acquires another entity in a leveraged buyout transaction also should disclose the accounting policy followed by the acquiring entity in determining the basis used to value its interest in the acquired entity, and the rationale for that accounting policy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 7 -Subparagraph a, b, c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 9, 10, 11, 12, 13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 88-16 -Section SEC Observer Comments Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 6 falsefalseBusiness Combinations8false0us-gaap_RealEstatePolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Long-Lived Assets. Real Estate Assets. Real estate assets are carried at depreciated cost. Costs incurred that are directly associated with the successful acquisition of real estate assets were capitalized as part of the investment basis of the real estate assets through December 31, 2008. Beginning January 1, 2009, these costs are now expensed as discussed above, other than as they relate to the acquisition of land. Costs incurred in developing, renovating, rehabilitating and improving real estate assets are capitalized as part of the investment basis of the real estate assets. Costs incurred in making repairs and maintaining real estate assets are expensed as incurred. During the land development and construction periods of qualifying projects, we capitalize interest costs, insurance, real estate taxes and general and administrative costs of the personnel performing the development, renovation, and rehabilitation; if such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. Capitalized costs are included in the investment basis of real estate assets. When a municipal district finances costs we incur for public infrastructure improvements, we record the costs in real estate until we are reimbursed. We also capitalize costs incurred to successfully originate a lease that results directly from and are essential to acquire that lease. Leasing costs that meet the requirements for capitalization are presented as a component of other assets. The depreciable portions of real estate assets are charged to depreciation expense on a straight-line basis over their respective estimated useful lives. Depreciation commences at the earlier of stabilization (defined as 93% occupied) or one year after completion of construction. We generally use the following useful lives: 5 to 7 years for capital improvements, 10 years for standard tenant improvements, 25 years for depreciable land improvements on developed buildings, 30 years for industrial properties acquired, 40 years for office and retail properties acquired and 40 years for properties we develop. Capitalized leasing costs are amortized over the respective lease term. Our average lease term for all leases in effect at December 31, 2010 was six years.  We assess the carrying values of our respective long-lived assets, whenever events or changes in circumstances indicate that the carrying amounts of these assets may not be fully recoverable. Recoverability of the assets is measured by comparison of the carrying amount of the asset to the estimated future undiscounted cash flows. In order to review our assets for recoverability, we consider current market conditions, as well as our intent with respect to holding or disposing of the asset. Fair value is determined through various valuation techniques; including discounted cash flow models; quoted market values; and third party appraisals, where considered necessary. If our analysis indicates that the carrying value of the long-lived asset is not recoverable on an undiscounted cash flow basis, we recognize an impairment charge for the amount by which the carrying value exceeds the current estimated fair value of the real estate property. We estimate the future undiscounted cash flows based on our intent as follows:  (i)       for real estate properties that we intend to hold long-term, including land held for development, properties currently under development and operating buildings, recoverability is assessed based on the estimated future net rental income from operating the property; (ii)       for land parcels we intend to sell, recoverability is assessed based on estimated fair value; (iii)       for real estate properties currently under development and operating buildings we intend to sell, recoverability is assessed based on proceeds from disposition that are estimated based on future net rental income of the property and expected market capitalization rates; and (iv)       for costs incurred related to the potential acquisition of land or development of a real estate property, recoverability is assessed based on the probability that the acquisition or development is likely to occur as of the measurement date. The use of projected future cash flows is based on assumptions that are consistent with our estimates of future expectations and the strategic plan we use to manage our underlying business. However, assumptions and estimates about future cash flows, discount rates and capitalization rates are complex and subjective. Changes in economic and operating conditions and our ultimate investment intent that occur subsequent to our impairment analyses could impact these assumptions and result in future impairment of our real estate properties or the recognition of a gain or loss at time of disposal. Long-Lived Assets. Real Estate Assets. Real estate assets are carried at depreciated cost. Costs incurred that are directly associated with thefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes the accounting policies that pertain to entities that primarily develop and then sell real property at retail or otherwise.No authoritative reference available.falsefalseReal Estate Assets9false0us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Goodwill. Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. We perform an annual impairment test for goodwill at the reporting unit level. The annual review is performed during the fourth quarter for all our reporting units. Additionally, we evaluate the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying amounts of goodwill may not be fully recoverable. We use a two step approach to our goodwill impairment evaluation. The first step of the goodwill impairment test is used to identify whether there is any potential impairment. If the fair value of a reporting unit exceeds its corresponding book value, including goodwill, the goodwill of the reporting unit is not considered to be impaired and the second step of the impairment test is unnecessary. If the carrying amount of the reporting unit exceeds its fair value, the second step of the impairment test is performed. The second step requires that we compare the implied fair value of the reporting unit goodwill with the carrying amount of that goodwill to measure the amount of impairment loss, if any. Generally, we use net asset value analyses to estimate the fair value of the reporting unit where the goodwill is allocated. We estimate the current fair value of the assets and liabilities in the reporting unit through various valuation techniques; including discounted cash flow models, applying a capitalization rate to estimated net operating income of a property, quoted market values and third-party appraisals, as considered necessary. The fair value of the reporting unit also includes an enterprise value premium that we estimate a third party would be willing to pay for the particular reporting unit. The use of projected future cash flows is based on assumptions that are consistent with our estimates of future expectations and the strategic plan we use to manage our underlying business. However, assumptions and estimates about future cash flows, discount rates and capitalization rates are complex and subjective. Changes in economic and operating conditions that occur subsequent to our impairment analyses could impact these assumptions and result in future impairment of our goodwill.Goodwill. Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a businessfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7-18, 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 4, 11-23, 26, 34 falsefalseGoodwill10false0us-gaap_DiscontinuedOperationsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Assets Held for Sale and Discontinued Operations. Discontinued operations represent a component of an entity that has either been disposed of or is classified as held for sale if both the operations and cash flows of the component have been or will be eliminated from ongoing operations of the entity as a result of the disposal transaction and the entity will not have any significant continuing involvement in the operations of the component after the disposal transaction. The results of operations of a component of our business or properties that have been classified as discontinued operations are also reported as discontinued operations for all periods presented. We classify a component of our business or property as held for sale when certain criteria are met. At such time, the respective assets and liabilities are presented separately on our Consolidated Balance Sheets and depreciation is no longer recognized. Assets held for sale are reported at the lower of their carrying amount or their estimated fair value less the costs to sell the assets. Properties disposed of to third parties or assets held for sale are considered discontinued operations. Properties contributed to property funds in which we maintain an ownership interest, act as manager and account for the property fund under the equity method are not considered discontinued operations due to our continuing involvement with the properties. Assets Held for Sale and Discontinued Operations. Discontinued operations represent a component of an entity that has either been disposed of or isfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for any discontinued operations. The results of operations of a component of an entity that either has been disposed of or is classified as held for sale shall be reported in discontinued operations if both: (a) the operations and cash flows of the component have been (or will be) eliminated from the ongoing operations of the entity as a result of the disposal transaction and (b) the entity will not have any significant continuing involvement in the operations of the component after the disposal transaction. If the entity elects to allocate interest expense to a discontinued operation, it should disclose its accounting policy for this election and describe its method of allocation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-13 -Paragraph 17 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-24 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 41, 42, 43, 44 falsefalseAssets Held for Sale and Discontinued Operations11false0us-gaap_InvestmentPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Investments in Unconsolidated Investees. Our investments in certain entities are presented under the equity method. The equity method is used when we have the ability to exercise significant influence over operating and financial policies of the investee but do not have control of the investee. Under the equity method, these investments (including advances to the investee) are initially recognized in the balance sheet at our cost and are subsequently adjusted to reflect our proportionate share of net earnings or losses of the investee, distributions received, deferred gains from the contribution of properties and certain other adjustments, as appropriate. When circumstances indicate there may have been a reduction in the value of an equity investment, we evaluate the equity investment and any advances made for impairment by estimating our ability to recover our investment from future expected cash flows. If we determine the loss in value is other than temporary, we recognize an impairment charge to reflect the equity investment and any advances made at fair value. Investments in Unconsolidated Investees. Our investments in certain entities are presented under the equity method. The equity method is used when we havefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policies for investments in financial assets, including marketable securities (debt and equity securities with readily determinable fair values), investments accounted for under the equity method and cost method, securities borrowed and loaned, and repurchase and resale agreements. For marketable securities, the description may include the entity's accounting treatment for transfers between investment categories and how the fair values for such securities are determined. Also, for all investments, an entity may describe its policy for assessing, recognizing and measuring impairment of the investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 7-16 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2, 12 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7-18 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10, 11 falsefalseInvestments in Unconsolidated Investees12false0pld_NotesReceivableBackedByRealEstatePoliciesTextBlockpldfalsenadurationNotes Receivable Secured by Real Estate Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Notes Receivable Backed by Real Estate. We hold certain investments in debt securities that are backed by real estate assets. We regularly review the creditworthiness of the entities with which we hold the note agreements and reduce the notes receivable balance by estimating an allowance for amounts that may become uncollectible in the future. The notes are also evaluated individually for impairment. We consider a loan 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 contractual terms of the agreement.  Notes Receivable Backed by Real Estate. We hold certain investments in debt securities that are backed by real estate assets. We regularly review thefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNotes Receivable Secured by Real Estate PolicyNo authoritative reference available.falsefalseNotes Receivable Backed by Real Estate13false0us-gaap_CashAndCashEquivalentsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Cash and Cash Equivalents. We consider all cash on hand, demand deposits with financial institutions, and short-term highly liquid investments with original maturities of three months or less to be cash equivalents. Our cash and cash equivalents are financial instruments that are exposed to concentrations of credit risk. We invest our cash with high-credit quality institutions. Cash balances may be invested in money market accounts that are not insured. We have not realized any losses in such cash investments or accounts and believe that we are not exposed to any significant credit risk. Cash and Cash Equivalents. We consider all cash on hand, demand deposits with financial institutions, and short-term highly liquid investments withfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringA description of a company's cash and cash equivalents accounting policy. An entity shall disclose its policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. In addition, cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. For a bank, may include explanation and amount of requirement to maintain reserves against deposits.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 203 -Paragraph 02-03 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 8, 9, 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Technical Practice Aid (TPA) -Number 2110 -Paragraph 6 falsefalseCash and Cash Equivalents14false0pld_RestrictedCashTextBlockpldfalsenadurationRestricted Cash Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Restricted Cash. Restricted cash consists of escrows under secured loan agreements for taxes and insurance relating to the underlying collateral.  Restricted Cash. Restricted cash consists of escrows under secured loan agreements for taxes and insurance relating to the underlying collateral.falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRestricted Cash PolicyNo authoritative reference available.falsefalseRestricted Cash15false0us-gaap_DebtPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Convertible Debt. In May 2008, the FASB issued an accounting standard that required separate accounting for the debt and equity components of certain convertible debt, such as the debt we issued in 2008 and 2007. We adopted this accounting standard on January 1, 2009 on a retroactive basis for convertible notes we issued in 2008 and 2007 as we have the ability to settle the conversion of the debt and conversion spread, at our option, in cash, common shares, or a combination of cash and shares. The 2010 convertible debt issuance requires us to settle the conversion by issuance of common shares and therefore this standard does not apply to these notes.  Under this standard, the liability and equity components of convertible debt are accounted for separately. The value assigned to the debt component is the estimated fair value at the date of issuance of a similar bond without the conversion feature, which results in the debt being recorded at a discount. The resulting debt discount is amortized over the estimated remaining life of the debt as additional non-cash interest expense. The carrying amount of the equity component is determined by deducting the fair value of the debt component from the initial proceeds of the convertible debt instrument as a wholeSee Note 9 for additional information on our convertible notes.  Convertible Debt. In May 2008, the FASB issued an accounting standard that required separate accounting for the debt and equity components of certainfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes the entity's accounting policies with respect to costs incurred to obtain or issue debt, the effects of refinancings, method of amortizing deferred financing costs and original issue discount, and classifications of debt on the balance sheet.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 8, 12 falsefalseConvertible Debt16false0pld_NoncontrollingInterestsPolicyTextBlockpldfalsenadurationNoncontrolling Intererst Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Noncontrolling Interests. We recognize the noncontrolling interests in real estate partnerships that we consolidate using each noncontrolling holder's respective share of the estimated fair value of the real estate as of the date of formation. Noncontrolling interest that was created or assumed as a part of a business combination is recognized at fair value as of the date of the transaction. Noncontrolling interest is subsequently adjusted for additional contributions, distributions to noncontrolling holders and the noncontrolling holders' proportionate share of the net earnings or losses of each respective entity. Certain limited partnership interests issued by us in connection with the formation of a real estate partnership and as consideration in a business combination are exchangeable into our common shares. Common shares issued upon exchange of a holder's noncontrolling interest are accounted for at our carrying value of the surrendered noncontrolling interest. Noncontrolling Interests. We recognize the noncontrolling interests in real estate partnerships that we consolidate using each noncontrolling holder'sfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNoncontrolling Intererst PolicyNo authoritative reference available.falsefalseNoncontrolling Interests17false0pld_CostOfRaisingCapitalPolicyTextBlockpldfalsenadurationCosts of Raising Capital Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Costs of Raising Capital. Costs incurred in connection with the issuance of both common shares and preferred shares are treated as a reduction to additional paid-in capital. Costs incurred in connection with the issuance or renewal of debt are capitalized in other assets, and amortized to interest expense over the term of the related debt. Costs of Raising Capital. Costs incurred in connection with the issuance of both common shares and preferred shares are treated as a reduction tofalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringCosts of Raising Capital PolicyNo authoritative reference available.falsefalseCosts of Raising Capital18false0us-gaap_RevenueRecognitionPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Revenue Recognition. Rental and other income. We lease our operating properties to customers under agreements that are classified as operating leases. We recognize the total minimum lease payments provided for under the leases on a straight-line basis over the lease term. Generally, under the terms of our leases, some or all of our rental expenses are recovered from our customers. We reflect amounts recovered from customers as a component of rental income. A provision for possible loss is made if the collection of a receivable balance is considered doubtful. Some of our retail and ground leases provide for additional rent based on sales over a stated base amount during the lease year. We recognize this additional rent when each customer's sales exceed their sales threshold. We recognize interest income and management, development and other fees and incentives when earned, fixed and determinable. Gains on Disposition of Real Estate. Gains on the disposition of real estate are recorded when the recognition criteria have been met, generally at the time title is transferred, and we no longer have substantial continuing involvement with the real estate sold. When we contribute a property to a property fund or joint venture in which we have an ownership interest, we do not recognize a portion of the gain realized. If a loss is realized it is recognized when known. The amount of gain not recognized, based on our ownership interest in the entity acquiring the property, is deferred by recognizing a reduction to our investment in the applicable unconsolidated investee. We adjust our proportionate share of net earnings or losses recognized in future periods to reflect the investees' recorded depreciation expense as if it were computed on our lower basis in the contributed properties rather than on the entity's basis. Through 2008, we reflected the gains recognized from contributions of CDFS properties to property funds and joint ventures in operating cash flows. As a result of the changes in our segments, these gains are now included in investing activities. When a property that we originally contributed to a property fund or joint venture is disposed of to a third party, we recognize the amount of the gain we had previously deferred, along with our proportionate share of the gain recognized by the investee. During periods when our ownership interest in an investee decreases, we recognize gains relating to previously deferred gains to coincide with our new ownership interest in the investee. Revenue Recognition. Rental and other income. We lease our operating properties to customers under agreements that are classified as operatingfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction should be disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section B -Paragraph Question 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 8, 12, 13 falsefalseRevenue Recognition19false0pld_RentalExpensesTextBlockpldfalsenadurationRental Expenses Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Rental Expenses. Rental expenses primarily include the cost of on-site property management personnel, utilities, repairs and maintenance, property insurance and real estate taxes. Rental Expenses. Rental expenses primarily include the cost of on-site property management personnel, utilities, repairs and maintenance, propertyfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRental Expenses PolicyNo authoritative reference available.falsefalseRental Expenses20false0pld_InvestmentManagementExpensesPolicyTextBlockpldfalsenadurationInvestment Management Expenses Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Investment Management Expenses. These costs include the property management expenses associated with the property-level management of the properties owned by our unconsolidated investees and the direct investment management expenses associated with the asset management of the property funds. Investment Management Expenses. These costs include the property management expenses associated with the property-level management of the properties ownedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Management Expenses PolicyNo authoritative reference available.falsefalseInvestment Management Expenses21false0us-gaap_CompensationRelatedCostsPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Share-Based Compensation. We account for stock-based compensation by measuring the cost of employee services received in exchange for an award of an equity instrument based on the fair value of the award on the grant date. We recognize the cost over the period during which an employee is required to provide service in exchange for the award, generally the vesting period. We treat dividend equivalent units (“DEUs”) as dividends, which are charged to retained earnings and factored into the computation of the fair value of the underlying share award at grant date. See Note 12 for more information on our share based compensation. Share-Based Compensation. We account for stock-based compensation by measuring the cost of employee services received in exchange for an award of anfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes the entity's accounting policies for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to its employees, including share-based arrangements; describes its methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 4, 9-15, A240 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 6, 7, 9, 11, 12, 13 falsefalseShare-Based Compensation22false0us-gaap_IncomeTaxPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Income Taxes. ProLogis was formed as a Maryland REIT in January 1993 and we have, along with our consolidated REIT subsidiary, elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). Under the Code, REITs are generally not required to pay federal income taxes if they distribute 100% of their taxable income and meet certain income, asset and shareholder tests. If we fail to qualify as a REIT in any taxable year, we will be subject to federal income taxes at regular corporate rates (including any alternative minimum tax) and may not be able to qualify as a REIT for the four subsequent taxable years. Even as a REIT, we may be subject to certain state and local taxes on our own income and property, and to federal income and excise taxes on our undistributed taxable income. We have elected taxable REIT subsidiary (“TRS”) status for some of our consolidated subsidiaries. This allows us to provide services that would otherwise be considered impermissible for REITs. Many of the foreign countries in which we have operations do not recognize REITs or do not accord REIT status under their respective tax laws to our entities that operate in their jurisdiction. In the United States, we are taxed in certain states in which we operate. Accordingly, we recognize income tax expense for the federal and state income taxes incurred by our TRSs, taxes incurred in certain states and foreign jurisdictions, and interest and penalties associated with our unrecognized tax benefit liabilities. We evaluate tax positions taken in the financial statements on a quarterly basis under the interpretation for accounting for uncertainty in income taxes. As a result of this evaluation, we may recognize a tax benefit from an uncertain tax position only if it is “more-likely-than-not” that the tax position will be sustained on examination by taxing authorities.  Deferred income taxes are recognized in certain taxable entities. Deferred income tax is generally a function of the period's temporary differences (items that are treated differently for tax purposes than for financial reporting purposes), the utilization of tax net operating losses generated in prior years that had been previously recognized as deferred income tax assets and deferred income tax liabilities related to indemnification agreements related to certain contributions to property funds. A valuation allowance for deferred income tax assets is provided if we believe all or some portion of the deferred income tax asset may not be realized. Any increase or decrease in the valuation allowance that results from a change in circumstances that causes a change in the estimated realizability of the related deferred income tax asset is included in deferred tax expense. See Note 15 for further discussion of income taxes. Income Taxes. ProLogis was formed as a Maryland REIT in January 1993 and we have, along with our consolidated REIT subsidiary, elected to be taxed as afalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 4 -Paragraph 11 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 20 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 6-34, 43, 47, 49 falsefalseIncome Taxes23false0us-gaap_DerivativesPolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Financial Instruments. We may use certain types of derivative financial instruments for the purpose of managing certain foreign currency exchange rate and interest rate risk. We reflect our derivative financial instruments at fair value and record changes in the fair value of these derivatives each period in earnings, unless specific hedge accounting criteria are met. To qualify for hedge accounting treatment, generally the derivative instruments used for risk management purposes must effectively reduce the risk exposure that they are designed to hedge (primarily interest rate swaps) and, if a derivative instrument is utilized to hedge an anticipated transaction, the anticipated transaction must be probable of occurring. Derivative instruments meeting these hedging criteria are formally designated as hedges at the inception of the contract. The unrealized gains and losses resulting from changes in fair value of an effective hedge are recorded in Accumulated Other Comprehensive Income (Loss) and are amortized to earnings over the remaining term of the hedged items. The ineffective portion of a hedge, if any, is immediately recognized in earnings to the extent that the change in value of the derivative instrument does not perfectly offset the change in value of the item being hedged. We estimate the fair value of our financial instruments through a variety of methods and assumptions that are based on market conditions and risks existing at each balance sheet date. Primarily, we use quoted market prices or quotes from brokers or dealers for the same or similar instruments. These values represent a general approximation of possible value and may never actually be realized. See Note 18 for information on our financial instruments. Financial Instruments. We may use certain types of derivative financial instruments for the purpose of managing certain foreign currency exchange rate andfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes an entity's accounting policies for its derivative instruments and hedging activities. Disclosure may include: (1) Each method used to account for derivative financial instruments and derivative commodity instruments ("derivatives"); (2) the types of derivatives accounted for under each method; (3) the criteria required to be met for each accounting method used, including a discussion of the criteria required to be met for hedge or deferral accounting and accrual or settlement accounting (for example: whether and how risk reduction, correlation, designation, and effectiveness tests are applied); (4) the accounting method used if the criteria specified for hedge accounting are not met; (5) the method used to account for termination of derivatives designated as hedges or derivatives used to affect directly or indirectly the terms, fair values, or cash flows of a designated item; (6) the method used to account for derivatives when the designated item matures, is sold, is extinguished, or is terminated. In addition, the method used to account for derivatives designated to an anticipated transaction, when the anticipated transaction is no longer likely to occur; and (7) where and when derivatives, and their related gains (losses) are reported in the statement of financial position, cash flows, and results of operations and (8) an accounting policy decision to offset fair value amounts with counterparties. An entity should also consider describing its embedded derivatives, and the method(s) used to determine the fair values of derivatives and any significant assumptions used in such valuations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph n -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 39 -Paragraph 10 falsefalseFinancial Instruments24false0pld_FairValueMeasurementsPolicyTextBlockpldfalsenadurationFair Value Measurements Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Fair value measurements. The objective of fair value is to determine the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the exit price). We estimate fair value for all of our assets and liabilities using available market information and valuation methodologies we believe to be appropriate for these purposes. Considerable judgment and a high degree of subjectivity are involved in developing these estimates and, accordingly, they are not necessarily indicative of amounts that we would realize upon disposition. The fair value hierarchy consists of three broad levels: •       Level 1 — Quoted prices in active markets for identical assets or liabilities that the entity has the ability to access. •       Level 2 — Observable inputs, other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. •       Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs. Fair value measurements. The objective of fair value is to determine the price that would be received upon the sale of an asset or paid to transfer afalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringFair Value Measurements PolicyNo authoritative reference available.falsefalseFair value measurements25false0pld_EnvironmentalCostsPolicyTextBlockpldfalsenadurationEnvironmental Costs Policyfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Environmental costs. We incur certain environmental remediation costs, including cleanup costs, consulting fees for environmental studies and investigations, monitoring costs, and legal costs relating to cleanup, litigation defense, and the pursuit of responsible third parties. Costs incurred in connection with operating properties and properties previously sold are expensed. Costs related to undeveloped land are capitalized as development costs. Costs incurred for properties to be disposed are included in the cost of the properties upon disposition. We maintain a liability for the estimated costs of environmental remediation expected to be incurred in connection with undeveloped land, operating properties and properties previously sold that we adjust as appropriate as information becomes available. Environmental costs. We incur certain environmental remediation costs, including cleanup costs, consulting fees for environmental studies andfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringEnvironmental Costs PolicyNo authoritative reference available.falsefalseEnvironmental costs26false0us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00Recent Accounting Pronouncements. In June 2009, the FASB issued a new accounting standard that was effective on January 1, 2010. This accounting standard is a revision to a previous FASB interpretation and changes how a reporting entity evaluates whether an entity is a VIE and which entity is considered the primary beneficiary of a VIE and is therefore required to consolidate such VIE. This accounting standard also requires ongoing assessment at each reporting period of which party within the VIE is considered the primary beneficiary and additional disclosures related to VIE's. The adoption of this standard on January 1, 2010 did not have a material impact on our financial position or results of operations. In July 2010, the FASB issued a new accounting standard that expands existing disclosures about the credit quality of financing receivables and the related allowance for credit losses. The expanded disclosure requirements, which are effective for ending balances as of December 31,2010, are applicable to our Notes Receivable Backed by Real Estate, and have been included in Note 6. Disclosures regarding activity that occurs during the reporting period will be effective beginning January 1, 2011. In January 2010, the FASB issued a new accounting standard that requires disclosures about purchases, sales, issuances and settlements in the reconciliation for Level 3 fair value measurements. The Level 3 disclosure requirements are effective for us on January 1, 2011, and will not have an impact on our financial position or results of operations.  Recent Accounting Pronouncements. In June 2009, the FASB issued a new accounting standard that was effective on January 1, 2010. This accountingfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRepresents disclosure of any changes in an accounting principle, including a change from one generally accepted accounting principle to another generally accepted accounting principle when there are two or more generally accepted accounting principles that apply or when the accounting principle formerly used is no longer generally accepted. Also disclose any change in the method of applying an accounting principle, or any change in an accounting principle required by a new pronouncement in the unusual instance that a new pronouncement does not include specific transition provisions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 154 -Paragraph 2, 17, 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 23, 24 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 01 -Paragraph b -Subparagraph 6 -Article 10 falsefalseRecent Accounting Pronouncements125Summary of Significant Accounting Policies (Policies)UnKnownUnKnownUnKnownUnKnownfalsetrue