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Employee Benefit Plans (The Weighted-Average Discount Rate Assumptions Used to Determine Net Periodic Benefit Costs) (Detail) - Unfunded Supplemental Benefit Plans | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Discount rates: |  |  |
Projected benefit obligation | 5.56% | 2.89% | 2.49%
Service cost | 5.75% | 3.29% | 3.14%
Interest cost | 5.45% | 2.37% | 1.83%

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- Definition Defined benefit plan assumptions used calculating net periodic benefit cost discount rate for interest cost. + References No definition available. + Details
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- Definition Defined benefit plan assumptions used calculating net periodic benefit cost discount rate for service cost. + References No definition available. + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- References No definition available. + Details
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- Details
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