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Accumulated Other Comprehensive Income (Schedule of Reclassifications out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Tax expense (benefit) | $ 29,680 | $ 24,665 | $ 49,964 | $ 45,011
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | 353 |
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | (130) | 4,801 | 469 | 9,018
Tax expense (benefit) | (54) | 1,451 | 116 | 2,704
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (76) | 3,350 | 353 | 6,314
Foreign Currency Exchange Contracts [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | 81 | 5,066 | 890 | 9,545
Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | $ (211) | $ (265) | $ (421) | $ (527)

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