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Income Taxes (Tables) | 9 Months Ended
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Mar. 31, 2018
Income Tax Disclosure [Abstract] |
Schedule of Details of Income Taxes | The following table provides details of income taxes:
| Three months ended March 31, |  | Nine months ended March 31,
(Dollar amounts in thousands) | 2018 |  | 2017 |  | 2018 |  | 2017
Income before income taxes | $ | 365,983 |  |  | $ | 319,149 |  |  | $ | 1,049,442 |  |  | $ | 848,214 |
Provision for income taxes | $ | 59,102 |  |  | $ | 65,587 |  |  | $ | 595,944 |  |  | $ | 178,300 |
Effective tax rate | 16.1 | % |  | 20.6 | % |  | 56.8 | % |  | 21.0 | %

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