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Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
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May 31, 2014 | Jul. 31, 2013 | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 27, 2014 | Sep. 28, 2013 | Oct. 24, 2014 Treasury Stock [Member] | Sep. 27, 2014 Other comprehensive income before reclassifications [Member] | Sep. 28, 2013 Other comprehensive income before reclassifications [Member] | Sep. 27, 2014 Other comprehensive income before reclassifications [Member] | Sep. 28, 2013 Other comprehensive income before reclassifications [Member] | Sep. 27, 2014 Other comprehensive income before reclassifications [Member] Intra-entity foreign currency transactions [Member] | Sep. 28, 2013 Other comprehensive income before reclassifications [Member] Intra-entity foreign currency transactions [Member] | Sep. 27, 2014 Other comprehensive income before reclassifications [Member] Intra-entity foreign currency transactions [Member] | Sep. 28, 2013 Other comprehensive income before reclassifications [Member] Intra-entity foreign currency transactions [Member] | Sep. 27, 2014 Reclassification out of Accumulated Other Comprehensive Income [Member] | Sep. 28, 2013 Reclassification out of Accumulated Other Comprehensive Income [Member] | Sep. 27, 2014 Reclassification out of Accumulated Other Comprehensive Income [Member] | Sep. 28, 2013 Reclassification out of Accumulated Other Comprehensive Income [Member]
Changes In Components Of OCI [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment |  |  | $ (149,348) | $ 80,812 | $ (174,077) | $ 28,953 |  | $ (149,533) | [1] | $ 80,764 | [1] | $ (174,195) | [1] | $ 29,385 | [1] | $ 29,586 | $ (6,365) | $ 49,056 | $ (14,967) | $ 185 | $ 48 | $ 118 | $ (432)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net |  |  | (19,264) | 864 | (13,534) | (533) |  | (995) |  | 864 |  | 4,735 |  | (533) |  |  |  |  |  | (18,269) | 0 | (18,269) | 0
Other Comprehensive Income (Loss), Unrealized Gain on Derivatives Arising During Period, Net |  |  | 101 | 96 | 300 | 1,977 |  | 0 |  | 0 |  | 0 |  | 1,923 |  |  |  |  |  | 101 | 96 | 300 | 54
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenef |  |  |  |  |  |  |  | 36 |  | 27 |  | 109 |  | 77 |  |  |  |  |  |  |  |  |
Other Comprehensive Income (loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (loss) Recognized in Net Periodic Benefit Cost, After Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 515 | 717 | 1,548 | 2,229
Net change in accumulated other comprehensive income (loss) |  |  | (167,960) | 82,516 | (185,654) | 32,703 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount | 200,000 | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired |  |  | 852,286 |  | 4,037,375 |  | 1,140,967 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  | $ 49,988 |  | $ 223,560 |  | $ 55,383 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Includes intra-entity foreign currency transactions that are of a long-term investment nature of $29,586 and $49,056 for the third quarter and first nine months of 2014 and $(6,365) and $(14,967) for the third quarter and first nine months of 2013, respectively.

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