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Plan of Restructuring - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 24, 2016	Sep. 26, 2015	Dec. 26, 2015	Nov. 06, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges, pre-tax	$ 5,370	$ 8,438	$ 29,811	$ 22,522	$ 34,931
November 2014 restructuring initiative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges, pre-tax			$ 29,811		$ 34,931
November 2014 restructuring initiative [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Expected percentage of workforce eliminated (in hundredths)	3.00%		3.00%			2.00%
Restructuring costs, remaining expected costs	$ 17,000		$ 17,000
November 2014 restructuring initiative [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Expected percentage of workforce eliminated (in hundredths)	4.00%		4.00%			3.00%
Restructuring costs, remaining expected costs	$ 22,000		$ 22,000

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+ References

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Amount of expected cost remaining for the specified restructuring cost.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
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-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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