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Plan of Restructuring - Restructuring Reserve Roll Forward by Expense and Segment (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
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			$ 12,065	$ 421	$ 421
Provision	$ 5,370	$ 8,438	29,811	22,522	34,931
Payments and other adjustments			(22,133)		(23,287)
Restructuring Reserve, ending balance	19,743		19,743		12,065
Healthcare Distribution [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			12,062	421	421
Provision			28,963		33,889
Payments and other adjustments			(21,503)		(22,248)
Restructuring Reserve, ending balance	19,522		19,522		12,062
Technology [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			3	0	0
Provision			848		1,042
Payments and other adjustments			(630)		(1,039)
Restructuring Reserve, ending balance	221		221		3
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			9,103	120	120
Provision			25,736		26,742
Payments and other adjustments			(16,964)		(17,759)
Restructuring Reserve, ending balance	17,875		17,875		9,103
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			2,151	301	301
Provision			2,619		5,706
Payments and other adjustments			(3,140)		(3,856)
Restructuring Reserve, ending balance	1,630		1,630		2,151
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			811	$ 0	0
Provision			1,456		2,483
Payments and other adjustments			(2,029)		(1,672)
Restructuring Reserve, ending balance	$ 238		$ 238		$ 811

X

- Definition

The sum of cash payments made as the result of exit or disposal activities and the amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability.

+ References

No definition available.

+ Details

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X

- Definition

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

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

+ Details

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X

- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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