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v3.10.0.1

- (Additional Information) (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Oct. 01, 2017 | Sep. 30, 2018 | Oct. 01, 2017 | Mar. 31, 2019 | Mar. 31, 2018
Income Tax Contingency [Line Items] |  |  |  |  |  |
Increase in effective tax rate due to GILTI inclusion | 2.80% |  |  |  |  |
Decrease in effective tax rate due to FDII guidance | (0.50%) |  |  |  |  |
Effective income tax rates | 18.60% | 21.70% | 19.10% | 21.20% |  |
Net decrease in effective tax rate due to Tax Act | 2.20% |  |  |  |  |
Decrease in effective tax rate due to change in enacted tax rate | (4.50%) |  |  |  |  |
Foreign income as a percentage or worldwide income |  |  |  |  |  | $ 0.63
Foreign effective income tax rates |  |  | 11.10% | 11.20% |  |
Tax rate of Swiss subsidiary |  |  | 6.00% |  |  |
Scenario, Forecast |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Blended federal statutory tax rate |  |  |  |  | 21.00% |
Foreign income as a percentage or worldwide income |  |  |  |  | $ 0.68 |

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