Restructuring Charges - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Beginning balance	$ 43.8	$ 13.4	$ 12.2	$ 19.8
Additional charges	16.8	15.5	98.1	25.7
Payments	(16.3)	(9.0)	(54.6)	(26.3)
Non-cash adjustments	0.0	(11.7)	(11.4)	(11.0)
Ending balance	44.3	8.2	44.3	8.2
Supply Chain Reinvention
Restructuring Reserve [Roll Forward]
Beginning balance	0.3	0.0	0.7	2.2
Additional charges	2.3	13.5	7.3	17.4
Payments	(1.9)	(2.3)	(7.0)	(8.4)
Non-cash adjustments	0.0	(11.2)	(0.3)	(11.2)
Ending balance	0.7	0.0	0.7	0.0
HRA Pharma Integration
Restructuring Reserve [Roll Forward]
Beginning balance	4.9	9.6	6.8	13.3
Additional charges	0.0	0.5	0.0	2.7
Payments	(0.5)	(4.0)	(2.4)	(10.1)
Non-cash adjustments	0.0	(0.1)	0.0	0.1
Ending balance	4.4	6.0	4.4	6.0
Project Energize
Restructuring Reserve [Roll Forward]
Beginning balance	37.8		2.9
Additional charges	14.5		90.6
Payments	(13.5)		(43.5)
Non-cash adjustments	0.0		(11.2)
Ending balance	38.8		38.8
Other Initiatives
Restructuring Reserve [Roll Forward]
Beginning balance	0.8	3.8	1.8	4.3
Additional charges	0.0	1.5	0.2	5.6
Payments	(0.4)	(2.8)	(1.7)	(7.8)
Non-cash adjustments	0.0	(0.4)	0.1	0.1
Ending balance	$ 0.4	$ 2.2	$ 0.4	$ 2.2

Restructuring Reserve, Settled Without Cash, Net

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-17

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- 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
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Topic 230
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-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SAB Topic 5.P.4.b.1)
-Publisher FASB
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 420
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-Name Accounting Standards Codification
-Section 45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482047/420-10-45-3

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- 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/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.b.2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

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-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

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- 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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