Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b,c)
-URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580

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Comprehensive Income - Foreign Currency Translation Gain (Loss) Components (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2016 USD ($)	Sep. 26, 2015 USD ($)	Sep. 24, 2016 USD ($)	Sep. 26, 2015 USD ($)	Jun. 25, 2016	Dec. 26, 2015	Jun. 27, 2015	Dec. 27, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ (6,463)	$ (38,730)	$ (2,041)	$ (112,877)
Euro
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ 3,755	$ 1,063	$ 14,932	$ (58,577)
FX rate into USD	1.12	1.12	1.12	1.12	1.12	1.1	1.12	1.22
British Pound
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ (17,161)	$ (9,668)	$ (39,536)	$ (9,775)
FX rate into USD	1.3	1.52	1.3	1.52	1.38	1.49	1.57	1.56
Australian Dollar
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ 3,826	$ (14,004)	$ 9,268	$ (25,809)
FX rate into USD	0.76	0.7	0.76	0.7	0.75	0.73	0.77	0.81
Canadian Dollar
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ (1,565)	$ (6,572)	$ 5,941	$ (7,915)
FX rate into USD	0.76	0.75	0.76	0.75	0.77	0.72	0.81	0.86
Polish Zloty
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ 2,044	$ (458)	$ 428	$ (2,309)
FX rate into USD	0.26	0.26	0.26	0.26	0.25	0.26	0.27	0.28
Swiss Franc
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ 189	$ (3,098)	$ 1,408	$ 606
FX rate into USD	1.03	1.02	1.03	1.02	1.03	1.01	1.07	1.01
Brazilian Real
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ 826	$ (3,418)	$ 3,055	$ (6,032)
FX rate into USD	0.31	0.25	0.31	0.25	0.3	0.25	0.32	0.37
All other currencies
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gain (loss)	$ 1,623	$ (2,575)	$ 2,463	$ (3,066)