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Postretirement Plans - Additional Information (Detail) - USD ($) | 3 Months Ended | 4 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Oct. 09, 2021 | Oct. 03, 2020 | Apr. 18, 2020 | Jul. 17, 2021 | Oct. 09, 2021
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |  |  |
Voluntarily contributions made by an employer |  |  |  |  | $ 0
Multiemployer plan, withdrawal obligation | $ 2,100,000 |  |  |  | 2,100,000
Multiemployer plan withdrawal liability of net present value monthly payments period | 20 years |  |  |  |
Multiemployer plans transition payments payable | $ 1,200,000 |  |  |  | 1,200,000
Multiemployer plan withdrawal liability estimate payment period | 3 years |  |  |  |
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 |  |  | 111,900,000 |  | $ 0
Defined benefit plan obligation, curtailment loss |  |  | $ 4,300,000 |  |
Defined benefit plan, revised settlement and curtailment loss |  |  |  | $ 108,800,000 |
Plan No. 2 |  |  |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |  |  |
Voluntarily contributions made by an employer |  | $ 7,600,000 |  |  |

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- Definition Defined benefit plan non cash pension termination charges. + References No definition available. + Details
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