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Employee Benefits - Weighted Average Asset Allocations for Retirement Plan (Detail)	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	100.00%	100.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	60.00%	62.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	38.00%	36.00%
Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocation	2.00%	2.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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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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