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Plan of Restructuring - Restructuring Reserve Roll Forward by Expense and Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016	Dec. 31, 2016
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			$ 25,703	$ 12,065	$ 12,065
Provision	$ 0	$ 20,383	0	24,441	45,891
Payments and other adjustments			(17,159)		(32,253)
Restructuring Reserve, ending balance	8,544		8,544		25,703
Healthcare Distribution [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			25,238	12,062	12,062
Provision			0		44,082
Payments and other adjustments			(16,905)		(30,906)
Restructuring Reserve, ending balance	8,333		8,333		25,238
Technology [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			465	3	3
Provision			0		1,809
Payments and other adjustments			(254)		(1,347)
Restructuring Reserve, ending balance	211		211		465
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			22,354	9,103	9,103
Provision			0		40,728
Payments and other adjustments			(15,598)		(27,477)
Restructuring Reserve, ending balance	6,756		6,756		22,354
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			2,454	2,151	2,151
Provision			0		3,587
Payments and other adjustments			(738)		(3,284)
Restructuring Reserve, ending balance	1,716		1,716		2,454
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			895	$ 811	811
Provision			0		1,576
Payments and other adjustments			(823)		(1,492)
Restructuring Reserve, ending balance	$ 72		$ 72		$ 895

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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Balance Type:	credit
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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

No definition available.

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