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Income Taxes (Detail) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 USD ($) item | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |  |
Effective Income Tax Rate Reconciliation, Percent | 85.30% | 22.10% | 37.60% | 20.50%
Loss on Cash Flow Hedge Ineffectiveness | $ |  |  | $ 28.0 |
Number of operating units benefit from local tax incentives | item |  |  | 3 |
U.S. federal corporate tax rate |  |  | 21.00% |

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