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Postretirement Plans - Summary of Amounts Included in Accumulated Other Comprehensive Income on Accompanying Consolidated Balance Sheets (Detail) - U.S. Postretirement Health Care Plans - USD ($) $ in Millions | Jan. 01, 2022 | Jan. 02, 2021
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Defined Benefit Plan Disclosure [Line Items] |  |
Net gain, net of tax of $0.8 million and $0.5 million, respectively | $ 2.3 | $ 1.3
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent |  |
Defined Benefit Plan Disclosure [Line Items] |  |
AOCI, tax | $ 0.8 | $ 0.5

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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