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Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Cash paid during the period for income taxes | $ 0.2 | $ 4.9
Cash paid for interest | 2.8 | $ 0.9
Establishment of operating lease right-of-use assets and lease liabilities |  |
Operating lease right-of-use assets | 71.3 |
Accrued liabilities and other long-term liabilities | 4.3 |
ASU 2016-02 |  |
Establishment of operating lease right-of-use assets and lease liabilities |  |
Operating lease right-of-use assets | 74.5 |
Operating lease liabilities | $ (78.8) |

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