Pension and Profit Sharing Plans - Schedule of Assumptions Used in Net Periodic Benefit Cost and Benefit Obligations (Detail) |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Retirement Benefits [Abstract] | |||
| Net Periodic Benefit Costs - Discount Rate | 5.53% | 5.27% | 4.99% |
| Net Periodic Benefit Costs - Expected Return on Plan Assets | 5.55% | 5.30% | 5.00% |
| Benefit Obligations - Discount Rate | 5.41% | 5.53% | |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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