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Shareholders' Equity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Oct. 01, 2016 | Sep. 30, 2017 | Oct. 01, 2016
Changes In Components Of OCI [Line Items] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other |  | $ 54,951 | $ 16,336 | $ 225,431 | $ 38,005
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net |  | 1,357 | 1,273 | 4,639 | (2,408)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net |  | (2,093) | 94 | (2,543) | 278
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax |  | (492) | (814) | (1,403) | (5,578)
Net change in accumulated other comprehensive income (loss) |  | 53,503 | 18,049 | 224,539 | 40,195
Other comprehensive income before reclassifications [Member] |  |  |  |  |
Changes In Components Of OCI [Line Items] |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other | [1] | 57,988 | 15,822 | 227,928 | 35,610
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net |  | 1,357 | 1,273 | 4,639 | (2,408)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net |  | (2,223) | 0 | (2,870) | 0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax |  | (51) | 25 | (94) | 97
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 |  | (11,193) | (9,273) | (50,512) | (38,092)
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 |  | (4,241) | 46 | (6,888) | 1,137
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 |  | 130 | 94 | 327 | 278
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax |  | $ 543 | $ 789 | $ 1,497 | $ 5,481
[1] | Includes intra-entity foreign currency transactions that are of a long-term investment nature of $(11,193) and $(50,512) for the third quarter and first nine months of 2017 and $(9,273) and $(38,092) for the third quarter and first nine months of 2016, respectively.

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