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Shareholders' Equity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2016 | Sep. 26, 2015 | Oct. 01, 2016 | Sep. 26, 2015
Changes In Components Of OCI [Line Items] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other |  | $ 16,336 | $ (34,931) | $ 38,005 | $ (185,591)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net |  | 1,273 | (2,553) | (2,408) | (260)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net |  | 94 | 89 | 278 | 782
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax |  | (814) | (883) | (5,578) | (2,607)
Net change in accumulated other comprehensive income (loss) |  | $ 18,049 | (36,512) | $ 40,195 | (182,462)
Stock Repurchase Program, Authorized Amount |  |  | 400,000 |  | 400,000
Treasury Stock, Shares, Acquired |  | 1,812,545 |  | 3,795,439 |
Treasury Stock, Value, Acquired, Cost Method |  | $ 117,148 |  | $ 230,926 |
Other comprehensive income before reclassifications [Member] |  |  |  |  |
Changes In Components Of OCI [Line Items] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other | [1] | 15,822 | (35,575) | 35,610 | (186,913)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net |  | 1,273 | (2,553) | (2,408) | (260)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net |  | 0 | 0 | 0 | 550
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax |  | 25 | 36 | 97 | 105
Other comprehensive income before reclassifications [Member] | Intra-entity foreign currency transactions [Member] |  |  |  |  |
Changes In Components Of OCI [Line Items] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other |  | (9,273) | 19,887 | (38,092) | 27,821
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |
Changes In Components Of OCI [Line Items] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other |  | 46 | 644 | 1,137 | 1,322
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net |  | 0 | 0 | 0 | 0
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net |  | 94 | 89 | 278 | 232
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax |  | $ 789 | $ 847 | $ 5,481 | $ 2,502
[1] | Includes intra-entity foreign currency transactions that are of a long-term investment nature of $(9,273) and $(38,092) for the third quarter and first nine months of 2016 and $19,887 and $27,821 for the third quarter and first nine months of 2015, respectively.

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