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Retirement Benefits (Tables) | 9 Months Ended
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Jun. 30, 2019
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Amount of Expense Associated with Defined Contribution Plans |
|  | Three-Months Ended |  | Nine-Months Ended
|  | June 30, |  | June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Company costs |  | $ | 8,969 |  | $ | 8,262 |  | $ | 26,426 |  | $ | 24,858
Schedule of Estimated Remaining Cash Contributions |
Retirement pension benefits: |  |  |
United States |  | $ | -
United Kingdom |  |  | 173
Japan |  |  | -
Germany |  |  | 271
Other postretirement benefits |  |  | 2,026
Schedule of Amounts of Contributions Associated with Multiemployer Defined Benefit Plans |
|  | Three-Months Ended |  | Nine-Months Ended
|  | June 30, |  | June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Company contributions |  | $ | 55 |  | $ | 86 |  | $ | 193 |  | $ | 253
Defined Benefit Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Periodic Benefit Costs |
|  | Three-Months Ended June 30,
|  | United States |  | Other Countries |  | Total
|  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost |  | $ | 363 |  | $ | 410 |  | $ | 509 |  | $ | 283 |  | $ | 872 |  | $ | 693
Interest cost |  |  | 1,596 |  |  | 1,501 |  |  | 477 |  |  | 386 |  |  | 2,073 |  |  | 1,887
Expected return on plan assets |  |  | (2,996) |  |  | (2,904) |  |  | (663) |  |  | (703) |  |  | (3,659) |  |  | (3,607)
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 154 |  |  | 150 |  |  | 71 |  |  | 74 |  |  | 225 |  |  | 224
Prior service cost |  |  | 177 |  |  | 177 |  |  | - |  |  | - |  |  | 177 |  |  | 177
Net periodic retirement pension (benefit) cost |  | $ | (706) |  | $ | (666) |  | $ | 394 |  | $ | 40 |  | $ | (312) |  | $ | (626)
Contributions paid |  | $ | - |  | $ | - |  | $ | 319 |  | $ | 227 |  | $ | 319 |  | $ | 227
|  | Nine-Months Ended June 30,
|  | United States |  | Other Countries |  | Total
|  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost |  | $ | 1,088 |  | $ | 1,232 |  | $ | 1,533 |  | $ | 606 |  | $ | 2,621 |  | $ | 1,838
Interest cost |  |  | 4,788 |  |  | 4,503 |  |  | 1,442 |  |  | 1,059 |  |  | 6,230 |  |  | 5,562
Expected return on plan assets |  |  | (8,989) |  |  | (8,711) |  |  | (1,997) |  |  | (2,106) |  |  | (10,986) |  |  | (10,817)
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 463 |  |  | 449 |  |  | 215 |  |  | 221 |  |  | 678 |  |  | 670
Prior service cost |  |  | 532 |  |  | 532 |  |  | - |  |  | - |  |  | 532 |  |  | 532
Net periodic retirement pension (benefit) cost |  | $ | (2,118) |  | $ | (1,995) |  | $ | 1,193 |  | $ | (220) |  | $ | (925) |  | $ | (2,215)
Contributions paid |  | $ | - |  | $ | - |  | $ | 1,382 |  | $ | 658 |  | $ | 1,382 |  | $ | 658
Other Postretirement Benefit Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Periodic Benefit Costs |
|  | Three-Months Ended |  | Nine-Months Ended
|  | June 30, |  | June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost |  | $ | 1 |  | $ | 1 |  | $ | 4 |  | $ | 5
Interest cost |  |  | 288 |  |  | 291 |  |  | 865 |  |  | 874
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 13 |  |  | 24 |  |  | 41 |  |  | 72
Prior service benefit |  |  | (1) |  |  | (40) |  |  | (4) |  |  | (119)
Curtailment gain |  |  | - |  |  | - |  |  | - |  |  | (330)
Net periodic other postretirement cost |  | $ | 301 |  | $ | 276 |  | $ | 906 |  | $ | 502
Contributions paid |  | $ | 512 |  | $ | 595 |  | $ | 1,589 |  | $ | 1,830

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