Share-Based Compensation - Equity-Settled Plans, Narrative (Details) - $ / shares						12 Months Ended
	Nov. 12, 2020	Nov. 15, 2018	Feb. 02, 2018	Sep. 27, 2010	Nov. 21, 2006	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company's common stock purchased in aggregate (in shares)						178,000	496,000	527,000	730,000
2007 Long-Term Inventive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum common stock issued under Long-Term Incentive Plan (in shares)					1,400,000
Contractual term of stock options granted					10 years
Company's common stock purchased in aggregate (in shares)						9,700
2007 Long-Term Inventive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Right to purchase common stock, minimum price (dollars per share)					$ 9.31
Vesting period					1 year
2007 Long-Term Inventive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Right to purchase common stock, minimum price (dollars per share)					$ 10.50
Vesting period					3 years
2010 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum common stock issued under Long-Term Incentive Plan (in shares)			475,000	1,000,000.0
Contractual term of stock options granted				10 years
Company's common stock purchased in aggregate (in shares)						27,000
2010 Long-Term Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Right to purchase common stock, minimum price (dollars per share)				$ 9.31
Vesting period				1 year
2010 Long-Term Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Right to purchase common stock, minimum price (dollars per share)				$ 20.09
Vesting period				4 years
2017 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum common stock issued under Long-Term Incentive Plan (in shares)						2,900,000
Vesting period						3 years
Company's common stock purchased in aggregate (in shares)						100,000
Number of additional shares authorized	650,000	715,000	425,000
Exercise price of outstanding stock options (dollars per share)						$ 4.44
2017 Long Term Incentive Plan Excluding 2010 Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum common stock issued under Long-Term Incentive Plan (in shares)			2,440,000