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Equity-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended		9 Months Ended		12 Months Ended
	May 17, 2022	Nov. 18, 2021	Nov. 15, 2021	Nov. 16, 2020	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021	Mar. 10, 2020	Oct. 22, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares exercised							1,000
Equity-based compensation					$ 4.8	$ 5.3	$ 14.0	$ 15.4
Unrecognized compensation cost					$ 36.2		$ 36.2		$ 25.6
Unamortized value of outstanding stock-based compensation, weighted average remaining life							1 year 4 months 24 days		1 year 2 months 12 days
Weighted average distribution price per share of PSU							$ 15.04
Amended and Restated 2018 Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of common stock that may be issued										18,650,000
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares available for sale											1,100,000
Common stock shares issued			112,000	120,000
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs Forfeited							23,000
Performance stock units issued							0
Weighted average distribution price per share of PSU							$ 0
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period							4 years
Non-cash equity-based compensation expense over the requisite service period							$ 12.2
Stock options weighted average grant date fair value							$ 14.57
Number of shares exercised							428,000
RSUs Forfeited							165,000
Common stock shares issued							955,000
Performance stock units issued							955,000
Weighted average distribution price per share of PSU							$ 14.57
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average exercise price		$ 15.04
Vesting period		4 years
Stock options weighted average grant date fair value		$ 6.84
Non-cash equity-based compensation expense over the requisite service period		$ 4.7
Number of shares exercised							1,000
Number of shares forfeited							251,000
Common stock shares issued		783,000
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average exercise price	$ 16.51
Non-cash equity-based compensation expense over the requisite service period	$ 6.7
RSUs Forfeited							0
Performance stock units issued	403,000						403,000
Weighted average distribution price per share of PSU	$ 12.41						$ 12.41
Performance Shares \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Stock unit awards vesting rights percentage	200.00%
Performance Shares \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance Stock unit awards vesting rights percentage	0.00%