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Derivative Instruments (Details 4) (Foreign Currency Swaps, USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Foreign Currency Swaps |  |  |  |  |  |  |  |
Net Investments in Foreign Operations [Line Items] |  |  |  |  |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ 23,913 | [1],[2] | $ 6,642 | [1],[2] | $ 34,835 | [1],[2] | $ (4,003) | [1],[2]
[1] | There were no sales or substantial liquidations of net investments in foreign operations that would have required the reclassification of gains or losses from accumulated other comprehensive income (loss) into investment income during the periods presented.
[2] | There was no ineffectiveness recognized for the Company’s hedges of net investments in foreign operations.

X
- Definition The current period gain (loss) recognized in other comprehensive income related to the effective portion of derivatives designated in cash flow hedges. + References No definition available. + Details
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- Details
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