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v3.19.2

Retirement Plans, Components of Net Pension Expense (Income) and Weighted-Average Assumptions (Details) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 29, 2016 USD ($) Participant | Oct. 31, 2016 USD ($) | Apr. 30, 2019 USD ($) | Apr. 30, 2018 USD ($) | Apr. 30, 2017 USD ($)
Weighted-average assumptions [Abstract] |  |  |  |  |
Net actuarial loss related to early lump sum payment of pension plan benefit |  |  | $ 0 | $ 0 | $ 8,842
Retirement plans with accumulated benefit obligations in excess of plan assets [Abstract] |  |  |  |  |
Projected benefit obligation for plans with accumulated benefit obligations in excess of plan assets |  |  | 794,200 | 820,400 |
Accumulated benefit obligation for plans with accumulated benefit obligations in excess of plan assets |  |  | 762,800 | 787,600 |
Fair value of plan assets for plans with accumulated benefit obligations in excess of plan assets |  |  | 621,900 | 624,400 |
U.S. [Member] |  |  |  |  |
Defined benefit plans, net pension expense (income) [Abstract] |  |  |  |  |
Service Cost |  |  | 0 | 0 | 0
Interest Cost |  |  | 11,704 | 11,666 | 12,398
Expected Return on Plan Assets |  |  | (13,472) | (13,154) | (14,053)
Net Amortization of Prior Service Cost |  |  | (154) | (154) | (154)
Recognized Net Actuarial Loss |  |  | 2,035 | 2,289 | 2,622
Curtailment/Settlement Loss |  |  | 0 | 0 | 8,842
Net Pension Expense (Income) |  |  | $ 113 | $ 647 | $ 9,655
Weighted-average assumptions [Abstract] |  |  |  |  |
Discount Rate |  |  | 4.30% | 4.10% | 4.00%
Rate of Compensation Increase |  |  |  |  |
Expected Return on Plan Assets |  |  | 6.80% | 6.80% | 6.80%
Number of eligible participants | Participant | 780 |  |  |  |
Total liability for early payment of pension plan benefit in a single lump sum payment | $ 28,300 |  |  |  |
Lump sum payment for early payment of pension plan benefit |  | $ 28,300 |  |  |
Net actuarial loss related to early lump sum payment of pension plan benefit |  |  |  |  | $ 8,800
Retirement plans with accumulated benefit obligations in excess of plan assets [Abstract] |  |  |  |  |
Projected benefit obligation for plans with accumulated benefit obligations in excess of plan assets |  |  | $ 285,197 | $ 279,644 |
Non-U.S. [Member] |  |  |  |  |
Defined benefit plans, net pension expense (income) [Abstract] |  |  |  |  |
Service Cost |  |  | 912 | 960 | 967
Interest Cost |  |  | 12,943 | 13,876 | 14,449
Expected Return on Plan Assets |  |  | (25,551) | (26,385) | (21,173)
Net Amortization of Prior Service Cost |  |  | 57 | 57 | 54
Recognized Net Actuarial Loss |  |  | 3,746 | 3,832 | 2,553
Curtailment/Settlement Loss |  |  | 0 | 19 | 0
Net Pension Expense (Income) |  |  | $ (7,893) | $ (7,641) | $ (3,150)
Weighted-average assumptions [Abstract] |  |  |  |  |
Discount Rate |  |  | 2.60% | 2.60% | 3.50%
Rate of Compensation Increase |  |  | 3.00% | 3.00% | 3.00%
Expected Return on Plan Assets |  |  | 6.50% | 6.50% | 6.70%
Retirement plans with accumulated benefit obligations in excess of plan assets [Abstract] |  |  |  |  |
Projected benefit obligation for plans with accumulated benefit obligations in excess of plan assets |  |  | $ 477,561 | $ 507,932 |

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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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