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Derivative and Other Fair Value Instruments (Details 1) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Supplemental Executive Retirement Plan | $ 96,823 | $ 104,463
Total derivative assets designated as hedging instruments | 106,582 | 106,392
Supplemental Executive Retirement Plan | 96,823 | 104,463
Total derivative liabilities designated as hedging instruments | 97,918 | 118,567
Redeemable Noncontrolling Interests Operating Partnership | 522,585 | 500,733
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) |  |
Derivatives, Fair Value [Line Items] |  |
Supplemental Executive Retirement Plan | 96,823 | 104,463
Total derivative assets designated as hedging instruments | 96,823 | 104,463
Supplemental Executive Retirement Plan | 96,823 | 104,463
Total derivative liabilities designated as hedging instruments | 96,823 | 104,463
Redeemable Noncontrolling Interests Operating Partnership | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Derivatives, Fair Value [Line Items] |  |
Supplemental Executive Retirement Plan | 0 | 0
Total derivative assets designated as hedging instruments | 9,759 | 1,929
Supplemental Executive Retirement Plan | 0 | 0
Total derivative liabilities designated as hedging instruments | 1,095 | 14,104
Redeemable Noncontrolling Interests Operating Partnership | 522,585 | 500,733
Significant Unobservable Inputs (Level 3) |  |
Derivatives, Fair Value [Line Items] |  |
Supplemental Executive Retirement Plan | 0 | 0
Total derivative assets designated as hedging instruments | 0 | 0
Supplemental Executive Retirement Plan | 0 | 0
Total derivative liabilities designated as hedging instruments | 0 | 0
Redeemable Noncontrolling Interests Operating Partnership | 0 | 0
Fair Value Hedges |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset | 9,759 | 1,597
Fair Value Hedges | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset | 0 | 0
Fair Value Hedges | Significant Other Observable Inputs (Level 2) |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset | 9,759 | 1,597
Fair Value Hedges | Significant Unobservable Inputs (Level 3) |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset | 0 | 0
Forward Starting Swaps |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset |  | 332
Derivative Liability | 1,095 | 14,104
Forward Starting Swaps | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset |  | 0
Derivative Liability | 0 | 0
Forward Starting Swaps | Significant Other Observable Inputs (Level 2) |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset |  | 332
Derivative Liability | 1,095 | 14,104
Forward Starting Swaps | Significant Unobservable Inputs (Level 3) |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset |  | 0
Derivative Liability | $ 0 | $ 0

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- Definition Fair value of employee holdings other than common shares within the supplemental executive retirement plan at the balance sheet date. + References No definition available. + Details
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- Definition The greater of carrying value (book value) or fair market value of an entity's issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313 + Details
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