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Plan Asset and Target Asset Allocations (Detail) - Plan No. 2 | Dec. 31, 2022 | Jan. 01, 2022
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Schedule Of Defined Benefit Plan Asset Allocation Targets [Line Items] |  |
Percentage of Plan Assets at the Measurement Date | 100.00% | 100.00%
Equity Securities |  |
Schedule Of Defined Benefit Plan Asset Allocation Targets [Line Items] |  |
Target Allocation 2021 | 28.00% |
Percentage of Plan Assets at the Measurement Date | 28.00% | 38.00%
Fixed Income Securities |  |
Schedule Of Defined Benefit Plan Asset Allocation Targets [Line Items] |  |
Target Allocation 2021 | 70.00% |
Percentage of Plan Assets at the Measurement Date | 70.00% | 60.00%
Short Term Investments And Cash |  |
Schedule Of Defined Benefit Plan Asset Allocation Targets [Line Items] |  |
Target Allocation 2021 | 2.00% |
Percentage of Plan Assets at the Measurement Date | 2.00% | 2.00%

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