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Change in capital as a result of a reallocation of General Partner's capital to Limited Partners due to the General Partner using Units.

No definition available.

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(Reduction to) increase in paid in capital (included in general partner's capital) due to acquisition of noncontrolling interests as a result of the acquisition of Archstone's interest in joint ventures during the period.

No definition available.

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Represents the change in the proportional relationship between the carrying values of Redeemable Limited Partners relative to that of Limited Partners.

No definition available.

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The value of long term incentive plan units issued during the period as a result of the conversion of restricted shares prior to vesting.

No definition available.

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Value of Units exchanged between Limited Partners and the General Partner. Total Units outstanding remains consistent.

No definition available.

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Decrease in General Partner balance from payment of dividends or other distributions.

No definition available.

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Investments in Partially Owned Entities.

No definition available.

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Value of long term incentive plan units issued during the period.

No definition available.

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OP Units issued to the General Partner or Limited Partners during the period.

No definition available.

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Total change in redeemable limited partners during the period due to redemptions and adjustments to redemption value of limited partners.

No definition available.

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OP unit issuance.

No definition available.

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Total of Partners Capital items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any.

No definition available.

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The cash outflow to reacquire OP Units during the period.

No definition available.

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Preferred Shares [Abstract]

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The percentage rate used to calculate dividend payments on preferred shares/preference units.

No definition available.

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Change in the value of company common shares contained in the company's supplemental executive retirement plan.

No definition available.

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Decrease in Limited Partners balance from payment of dividends or other distributions.

No definition available.

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This element represents the amount of recognized equity-based compensation related to employee stock purchase programs during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized).

No definition available.

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Amount of equity-based compensation, related to restricted stock units or restricted stock awards, recognized as expense or an asset, if compensation is capitalized.

No definition available.

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This element represents the amount of recognized equity-based compensation related to stock options during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized).

No definition available.

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This element represents the amount of recognized equity-based compensation related to other long-term incentive plans during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized).

No definition available.

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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No definition available.

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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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Aggregate amount of net income allocated to general partners.

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Aggregate amount of net income allocated to limited partners.

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The amount of the reduction or elimination during the period of a noncontrolling interest resulting from the parent's loss of control and deconsolidation of the entity in which one or more outside parties had a noncontrolling interest.

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No definition available.

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No definition available.

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Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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The cash outflow to reacquire preferred stock during the period.

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Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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No definition available.

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Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

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Value of stock issued as a result of the exercise of stock options.

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This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.

No definition available.

Name:	us-gaap_StockholdersEquityOther
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