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Plans of Restructuring - Restructuring Reserve Roll Forward by Expense and Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 30, 2017
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			$ 4,557	$ 25,703	$ 25,703
Provision	$ 8,853	$ 0	27,511	0
Payments and other adjustments			(18,555)		(21,146)
Restructuring Reserve, ending balance	13,513		13,513		4,557
Healthcare Distribution [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			4,557	25,238	25,238
Provision			25,625
Payments and other adjustments			(18,065)		(20,681)
Restructuring Reserve, ending balance	12,117		12,117		4,557
Technology [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			0	465	465
Provision			1,886
Payments and other adjustments			(490)		(465)
Restructuring Reserve, ending balance	1,396		1,396		0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			3,218	22,354	22,354
Provision			26,474
Payments and other adjustments			(16,908)		(19,136)
Restructuring Reserve, ending balance	12,784		12,784		3,218
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			1,315	2,454	2,454
Provision			757
Payments and other adjustments			(1,441)		(1,139)
Restructuring Reserve, ending balance	631		631		1,315
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, beginning balance			24	$ 895	895
Provision			280
Payments and other adjustments			(206)		(871)
Restructuring Reserve, ending balance	$ 98		$ 98		$ 24

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://fasb.org/us-gaap/role/ref/legacyRef
-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=115931487&loc=d3e140864-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-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=115931487&loc=d3e140904-122747

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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://fasb.org/us-gaap/role/ref/legacyRef
-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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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=115931487&loc=d3e140904-122747

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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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