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Pension Plans | 3 Months Ended
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Aug. 31, 2019
Compensation And Retirement Disclosure [Abstract] |
Pension Plans | NOTE 15 — PENSION PLANS We offer defined benefit pension plans, defined contribution pension plans, and various postretirement benefit plans. The following tables provide the retirement-related benefit plans’ impact on income before income taxes for the three months ended August 31, 2019 and 2018:
|  | U.S. Plans |  |  | Non-U.S. Plans |
|  | Three Months Ended |  |  | Three Months Ended |
Pension Benefits |  | August 31, |  |  | August 31, |  |  | August 31, |  |  | August 31, |
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Service cost |  | $ | 9,856 |  |  | $ | 9,382 |  |  | $ | 1,391 |  |  | $ | 1,219 |
Interest cost |  |  | 5,104 |  |  |  | 5,497 |  |  |  | 1,193 |  |  |  | 1,399 |
Expected return on plan assets |  |  | (8,573 | ) |  |  | (8,467 | ) |  |  | (1,834 | ) |  |  | (2,051 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service cost (credit) |  |  | 2 |  |  |  | 29 |  |  |  | (9 | ) |  |  | (8 | )
Net actuarial losses recognized |  |  | 4,629 |  |  |  | 3,272 |  |  |  | 523 |  |  |  | 319 |
Net Periodic Benefit Cost |  | $ | 11,018 |  |  | $ | 9,713 |  |  | $ | 1,264 |  |  | $ | 878 |
|  | U.S. Plans |  |  | Non-U.S. Plans |
|  | Three Months Ended |  |  | Three Months Ended |
Postretirement Benefits |  | August 31, |  |  | August 31, |  |  | August 31, |  |  | August 31, |
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Service cost |  | $ | - |  |  | $ | - |  |  | $ | 429 |  |  | $ | 392 |
Interest cost |  |  | 37 |  |  |  | 48 |  |  |  | 282 |  |  |  | 291 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service (credit) |  |  | (55 | ) |  |  | (55 | ) |  |  |  |  |  |  |  |
Net actuarial (gains) losses recognized |  |  | (16 | ) |  |  | (6 | ) |  |  | 158 |  |  |  | 115 |
Net Periodic Benefit (Credit) Cost |  | $ | (34 | ) |  | $ | (13 | ) |  | $ | 869 |  |  | $ | 798 |
Due to slightly lower discount rates, net periodic pension and postretirement cost for fiscal 2020 is higher than our fiscal 2019 expense. We expect that pension expense will fluctuate on a year-to-year basis, depending upon the investment performance of plan assets and potential changes in interest rates, but such changes are not expected to be material to our consolidated financial results. We previously disclosed in our financial statements for the fiscal year ended May 31, 2019 that we expected to contribute approximately $0.9 million to our retirement plans in the U.S. and approximately $6.4 million to plans outside the U.S. during the current fiscal year, and as of August 31, 2019, those amounts remain unchanged.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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