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Postretirement Plans - Schedule of Amounts Included in Accumulated Other Comprehensive Income on Accompanying Consolidated Balance Sheets (Detail) - U.S. Postretirement Health Care Plans - USD ($) $ in Millions | Dec. 30, 2023 | Dec. 31, 2022
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Defined Benefit Plan Disclosure [Line Items] |  |
Net gain, net of tax of $2.1 million and $2.2 million, respectively | $ 6.2 | $ 6.4
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent |  |
Defined Benefit Plan Disclosure [Line Items] |  |
AOCI, tax | $ 2.1 | $ 2.2

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- Definition Amount of tax expense (benefit) allocated to accumulated other comprehensive income (loss) including portion attributable to noncontrolling interest. + References No definition available. + Details
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- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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