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Retirement Benefits (Schedule of Expected Benefit Payments) (Details) $ in Thousands | Sep. 30, 2019 USD ($)
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Defined Benefit Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2020 | $ 10,801
2021 | 11,186
2022 | 11,622
2023 | 12,729
2024 | 13,080
2025 - 2029 | 70,633
Other Postretirement Benefit Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2020 | 3,237
2021 | 3,220
2022 | 3,183
2023 | 3,125
2024 | 3,061
2025 - 2029 | 13,891
United States [Member] | Defined Benefit Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2020 | 7,170
2021 | 7,823
2022 | 8,383
2023 | 8,924
2024 | 9,385
2025 - 2029 | 51,139
Other Countries [Member] | Defined Benefit Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2020 | 3,631
2021 | 3,363
2022 | 3,239
2023 | 3,805
2024 | 3,695
2025 - 2029 | $ 19,494

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