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Retirement Benefits (Tables) | 6 Months Ended
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Mar. 31, 2020
Retirement Benefits [Line Items] |
Schedule of Amount of Expense Associated with Defined Contribution Plans |
|  | Three-Months Ended |  | Six-Months Ended
|  | March 31, |  | March 31,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Company costs |  | $ | 8,910 |  | $ | 9,086 |  | $ | 17,614 |  | $ | 17,457
Schedule of Estimated Remaining Cash Contributions |
Retirement pension benefits: |  |  |
United States |  | $ | -
United Kingdom |  |  | 199
Japan |  |  | -
Germany |  |  | 481
Other postretirement benefits |  |  | 2,716
Schedule of Amounts of Contributions Associated with Multiemployer Defined Benefit Plans |
|  | Three-Months Ended |  | Six-Months Ended
|  | March 31, |  | March 31,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Company contributions |  | $ | 128 |  | $ | 61 |  | $ | 198 |  | $ | 138
Defined Benefit Pension Plan [Member] |
Retirement Benefits [Line Items] |
Schedule of Net Periodic Benefit Costs |
|  | Three-Months Ended March 31,
|  | United States |  | Other Countries |  | Total
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Service cost |  | $ | 415 |  | $ | 362 |  | $ | 708 |  | $ | 512 |  | $ | 1,123 |  | $ | 874
Interest cost |  |  | 1,397 |  |  | 1,596 |  |  | 319 |  |  | 485 |  |  | 1,716 |  |  | 2,081
Expected return on plan assets |  |  | (3,086) |  |  | (2,997) |  |  | (708) |  |  | (672) |  |  | (3,794) |  |  | (3,669)
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 357 |  |  | 155 |  |  | 260 |  |  | 73 |  |  | 617 |  |  | 228
Prior service cost |  |  | 234 |  |  | 178 |  |  | 6 |  |  | - |  |  | 240 |  |  | 178
Net periodic retirement pension (benefit) cost |  | $ | (683) |  | $ | (706) |  | $ | 585 |  | $ | 398 |  | $ | (98) |  | $ | (308)
Contributions paid |  | $ | - |  | $ | - |  | $ | 601 |  | $ | 509 |  | $ | 601 |  | $ | 509
|  | Six-Months Ended March 31,
|  | United States |  | Other Countries |  | Total
|  | 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Service cost |  | $ | 830 |  | $ | 725 |  | $ | 1,418 |  | $ | 1,024 |  | $ | 2,248 |  | $ | 1,749
Interest cost |  |  | 2,795 |  |  | 3,192 |  |  | 640 |  |  | 965 |  |  | 3,435 |  |  | 4,157
Expected return on plan assets |  |  | (6,173) |  |  | (5,993) |  |  | (1,540) |  |  | (1,334) |  |  | (7,713) |  |  | (7,327)
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 715 |  |  | 309 |  |  | 521 |  |  | 144 |  |  | 1,236 |  |  | 453
Prior service cost |  |  | 468 |  |  | 355 |  |  | 12 |  |  | - |  |  | 480 |  |  | 355
Net periodic retirement pension (benefit) cost |  | $ | (1,365) |  | $ | (1,412) |  | $ | 1,051 |  | $ | 799 |  | $ | (314) |  | $ | (613)
Contributions paid |  | $ | - |  | $ | - |  | $ | 1,732 |  | $ | 1,063 |  | $ | 1,732 |  | $ | 1,063
Other Postretirement Benefit Plans [Member] |
Retirement Benefits [Line Items] |
Schedule of Net Periodic Benefit Costs |
|  | Three-Months Ended |  | Six-Months Ended
|  | March 31, |  | March 31,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Service cost |  | $ | - |  | $ | 2 |  | $ | 1 |  | $ | 3
Interest cost |  |  | 196 |  |  | 289 |  |  | 391 |  |  | 577
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 11 |  |  | 14 |  |  | 23 |  |  | 28
Prior service cost (benefit) |  |  | - |  |  | (2) |  |  | 1 |  |  | (3)
Net periodic other postretirement cost |  | $ | 207 |  | $ | 303 |  | $ | 416 |  | $ | 605
Contributions paid |  | $ | 176 |  | $ | 704 |  | $ | 521 |  | $ | 1,077

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