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Restructuring Charges - Restructuring Charges Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 25, 2022	Dec. 26, 2021
Restructuring Reserve [Roll Forward]
Beginning balance	$ 15.4	$ 2.4
Restructuring charges	10.1	25.1	$ 4.2
Payments for restructuring	(19.5)	(12.1)
Settled without cash	(4.6)
Ending balance	1.4	15.4	2.4
Workforce reduction costs
Restructuring Reserve [Roll Forward]
Beginning balance	15.3	2.2
Restructuring charges	3.6	24.5
Payments for restructuring	(17.6)	(11.4)
Settled without cash	0.0
Ending balance	1.3	15.3	2.2
Facility Closure Costs
Restructuring Reserve [Roll Forward]
Beginning balance	0.0
Restructuring charges	4.6
Payments for restructuring	0.0
Settled without cash	(4.6)
Ending balance	0.0	0.0
Other
Restructuring Reserve [Roll Forward]
Beginning balance	0.1	0.2
Restructuring charges	1.9	0.6
Payments for restructuring	(1.9)	(0.7)
Settled without cash	0.0
Ending balance	$ 0.1	$ 0.1	$ 0.2

X

- 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
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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

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

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

+ References

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-Section 50
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