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Defined Benefit Pension Plans - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Retirement Benefits [Abstract]
Employer contributions	$ 0	$ 0	$ 0	$ 0
Assumed as expected long-term rate of return (as a percent)			7.75%	7.75%

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- References

No definition available.

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- 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.

+ References

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-Topic 715
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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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