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Defined Benefit Plans - Reconciliation of Level Three Measurements (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Ending balance	$ 177.1
Group annuity/insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	26.8	$ 26.0
(Losses) gains on assets during the period	(0.6)	0.8
Sale/Settlement	(26.2)	0.0
Ending balance	$ 0.0	$ 26.8

X

- Definition

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from (Losses) gains on assets during the period.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

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- Definition

Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

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