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Derivative Financial Instruments, Notional Amounts and Fair Values of Foreign Currency Forward Contracts Designated as Cash Flow Hedging Instruments (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 30, 2018 | Apr. 01, 2018
--- | --- | --- | ---
Foreign Exchange Forward [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | $ 776,642 | $ 792,840 | $ 1,273,262
Fair value of hedged item | 30,197 | 26,017 | (35,732)
Inventory Purchases [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | 486,999 | 468,305 | 718,925
Fair value of hedged item | 21,649 | 15,089 | (31,453)
Sales [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | 263,221 | 298,194 | 375,441
Fair value of hedged item | 8,358 | 11,232 | 7,323
Royalties and Other [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | 26,422 | 26,341 | 178,896
Fair value of hedged item | $ 190 | $ (304) | $ (11,602)

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 + Details
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