Plan Asset and Target Asset Allocations (Detail) - Plan No. 2	Dec. 31, 2022	Jan. 01, 2022
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%

Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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