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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 | Sep. 25, 2016 | Dec. 27, 2015 | Sep. 27, 2015
--- | --- | --- | ---
Foreign Exchange Forward [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | $ 1,597,050 | $ 1,532,198 | $ 1,394,028
Fair value of hedged item | 18,992 | 107,438 | 118,558
Inventory Purchases [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | 1,045,400 | 1,380,488 | 1,122,827
Fair value of hedged item | 23,662 | 108,521 | 124,422
Sales [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | 318,283 | 97,350 | 213,841
Fair value of hedged item | (559) | 803 | (3,352)
Royalties and Other [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount of derivative | 233,367 | 54,360 | 57,360
Fair value of hedged item | $ (4,111) | $ (1,886) | $ (2,512)

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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=73719730&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=73719730&loc=d3e13495-108611 + Details
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