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Income Taxes (Narratives) (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Mar. 31, 2020
Income Tax [Line Items] |  |  |  |  |
Effective Income Tax Rate Reconciliation, Percent | 24.00% | 22.00% | 23.00% | 21.00% |
Income tax expense as a percentage of income from continuing operations | 21.00% |  |  |  |
Minimum [Member] | Scenario, Forecast |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent |  |  |  |  | 22.00%
Maximum [Member] | Scenario, Forecast |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent |  |  |  |  | 23.00%

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