Defined benefit plan, actual rate of return on plan assets

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- Definition

Amount of benefits for defined benefit plan expected to be paid by employer in next fiscal year following latest fiscal year.

+ References

No definition available.

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- Definition

High quality corporate bonds with duration range.

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- Definition

The number of multiemployer pension plans the employer participates in.

+ References

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- Definition

Pensions and other postretirement benefits.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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- Definition

Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

+ References

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- Definition

Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

+ References

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

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- Definition

Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

+ References

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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
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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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- Definition

Ultimate trend rate for health care cost for defined benefit postretirement plan.

+ References

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- Definition

Year ultimate health care cost trend rate is expected to be reached, in YYYY format.

+ References

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- Definition

Description of defined benefit pension and other postretirement plans.

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No definition available.

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- Definition

Amount of increase (decrease) in obligation for pension benefits. Includes, but is not limited to, defined benefit or defined contribution plans. Excludes other postretirement benefits.

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- Definition

Amount of cost for employer contribution to multiemployer pension plan determined to be individually significant.

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Amount of cost for employer contribution required to be made in future period to multiemployer pension plan determined to be individually significant. Includes, but is not limited to, employer contribution required by collective-bargaining arrangement (CBA), statutory obligation, and other contractual obligation.

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Pensions and Other Postretirement Benefits - Narrative (Details) $ in Millions	12 Months Ended
	Apr. 30, 2022 USD ($) plan	Apr. 30, 2021 USD ($)	Apr. 30, 2020 USD ($)	Dec. 31, 2021
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Eligibility condition for covered employees to avail the benefits of unfunded, defined postretirement plans that provide health care and life insurance benefits	when they reach age 55 and have attained 10 years of credited service
Settlement loss (gain)	$ 10.8	$ 35.5	$ 0.1
Expected benefit payments for the defined benefit pension and other postretirement in 2023	44.0
Expected benefit payments for the defined benefit pension and other postretirement in 2024	41.0
Expected benefit payments for the defined benefit pension and other postretirement in 2025	38.3
Expected benefit payments for the defined benefit pension and other postretirement in 2026	36.9
Expected benefit payments for the defined benefit pension and other postretirement in 2027	35.8
Expected benefit payments for the defined benefit pension and other postretirement in 2028 through 2032	$ 176.0
Number of multiemployer pension plans \| plan	1
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 2.6	2.5
Multiemployer plan actual funded status				48.50%
Fiscal Year Two Thousand Twenty three
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Multiemployer Plan, Pension, Significant, Future Employer Contribution, Amount	$ 2.5
Fixed income
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Approximate percentage of assets to be invested in company's current investment policy	63.00%
Other Postretirement Benefits Plan
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Settlement loss (gain)	$ 0.0	0.0	0.0
Other Postretirement Benefits Plan \| United States [Member]
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Assumed health care trend rate for next fiscal year	6.50%
Assumed health care trend rate for participants under age 65	5.00%
Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate	2032
Other Postretirement Benefits Plan \| CANADA
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Assumed health care trend rate for next fiscal year	4.50%
Assumed health care trend rate for participants under age 65	4.50%
Settlement loss (gain)	$ 0.0	0.0
Defined Benefit Pension Plans
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Settlement loss (gain)	$ 10.8	$ 35.5	$ 0.1
Defined benefit plan actual rate of return on plan assets	(4.60%)	12.90%
Expected amount to be contributed by the Company to the defined benefit pension plans in 2023	$ 80.0
Expected direct benefit payments to be made by the Company in 2023	9.6
Defined Benefit Pension Plans \| CANADA
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
Decrease in pension obligations		$ (82.6)
Settlement loss (gain)	$ 0.0	$ 29.6
Minimum
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
High Quality Corporate Bonds with Duration Range	10 years
Maximum
Pensions and Other Postretirement Benefits (Additional Textual) [Abstract]
High Quality Corporate Bonds with Duration Range	13 years