Quarterly report pursuant to Section 13 or 15(d)

Equity, Long-Term Incentive Compensation Plans and Non-controlling Interest - Cash-Based Long-Term Incentive Compensation (Details)

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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 - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Cash Long-Term Incentive Plan        
Cash-based long-term incentive plan, granted amount     $ 7.9 $ 5.9
Cash long-term incentive plan, compensation expense $ 12.2 $ 11.6 39.4 $ 37.9
Cash long-term incentive plan, unrecognized compensation balance $ 93.7   $ 93.7