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v3.20.2

Segment Information (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2020 USD ($) segment | Sep. 30, 2019 | Sep. 30, 2018 USD ($)
Entity Wide Revenue Major Customer [Line Items] |  |  |
Number of Reportable Segments | segment | 2 |  |
Restructuring charges | $ | $ 22,216 |  | $ 17,013
General Electric [Member] | Sales [Member] |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Percentage of total attributable to major customer | 11.00% | 14.00% | 16.00%
General Electric [Member] | Trade Accounts Receivable [Member] |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Percentage of total attributable to major customer | 9.00% | 8.00% |
Boeing Company [Member] | Sales [Member] |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Percentage of total attributable to major customer | 14.00% | 15.00% | 12.00%
Boeing Company [Member] | Trade Accounts Receivable [Member] |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Percentage of total attributable to major customer | 13.00% | 14.00% |

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