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Equity, Long-Term Incentive Compensation Plans and Non-controlling Interest - Cash-Based Long-Term Incentive Compensation (Details) - Cash Long-Term Incentive Plan $ in Millions | 12 Months Ended
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Jun. 30, 2019 USD ($) Installment | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($)
Cash Long-Term Incentive Plan |  |  |
Cash-based long-term incentive plan, granted amount | $ 85.2 | $ 64.9 |
Cash long-term incentive plan, compensation expense | 55.5 | $ 52.4 | $ 48.8
Cash long-term incentive plan, unrecognized compensation balance | $ 152.2 |  |
Minimum |  |  |
Cash Long-Term Incentive Plan |  |  |
Cash long-term incentive plan, equal vesting installments | Installment | 3 |  |
Cash long-term incentive plan, percentage of equal vesting installments | 33.33% |  |
Cash long-term incentive plan, vesting period | 3 years |  |
Maximum |  |  |
Cash Long-Term Incentive Plan |  |  |
Cash long-term incentive plan, equal vesting installments | Installment | 4 |  |
Cash long-term incentive plan, percentage of equal vesting installments | 25.00% |  |
Cash long-term incentive plan, vesting period | 4 years |  |

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