Defined Benefit Pension Obligation - Assumptions (Details) - Defined benefit pension plan	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Net Periodic Benefit Costs:
Discount rate (as a percent)	0.40%	0.25%	0.45%
Rate of compensation increase (as a percent)	1.50%	1.50%	1.50%
Expected long-term return on assets (as a percent)	1.00%	1.00%	1.20%
Benefit Obligation:
Discount rate (as a percent)	0.40%	0.25%
Rate of compensation increase (as a percent)	1.50%	1.50%