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Derivative Instruments (Change In Fair Value Of Derivative Instruments) (Details) - Other Income [Member] - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Not Designated as Hedging Instrument [Member] | Derivative Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Change in Fair Value | $ 11,346 | $ 2,882
Not Designated as Hedging Instrument [Member] | Derivative Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Change in Fair Value | (11,630) | (2,882)
Designated as Hedging Instrument [Member] | Derivative Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Change in Fair Value | 121 | 66
Designated as Hedging Instrument [Member] | Derivative Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Change in Fair Value | $ (2) | $ (9)

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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