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Postretirement Plans - Additional Information (Detail) - USD ($) | 4 Months Ended
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Apr. 24, 2021 | Apr. 18, 2020
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |
Voluntarily contributions made by an employer | $ 0 |
Plan No. 1 |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |
Defined benefit plan assets, transferred |  | $ 6,400,000
Defined benefit plans non-cash settlement charge |  | 116,200,000
Settlement loss | $ 0 | 111,900,000
Defined benefit plan obligation, curtailment loss |  | 4,300,000
Voluntarily contributions made by an employer |  | $ 1,400,000

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- Definition Defined benefit plan amount transferred in cash for lumpsum payments and purchases. + References No definition available. + Details
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- Definition Defined benefit plan non cash pension termination charges. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=109237824&loc=SL108413299-114919 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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