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Supplemental Statement of Cash Flows Information (Schedule of Supplemental Statement of Cash Flows Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Supplemental Statement of Cash Flows Information |  |  |  |
Interest paid, net of amounts capitalized |  |  | $ 14,146 | $ 22,173
Income taxes paid |  |  | 65,283 | 44,661
Income tax refunds received |  |  | 11,012 | 1,294
Non-cash activities: |  |  |  |
Purchases of property, plant and equipment on account |  |  | 2,325 | 8,081
Impact of the adoption of ASC 606 |  |  |  | 38,700
Impact of the adoption of ASC 842 (Note 5) |  |  | 255 |
Impact of the adoption of ASU 2016-16 |  |  |  | 1,005
Common shares issued from treasury to settle benefit obligations (Note 21) | $ 14,748 | $ 14,846 | $ 14,748 | 14,846
Purchases of treasury stock on account |  |  |  | $ 4,204

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