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RSU Measurement Date Assumptions (Details) - Restricted Stock Units (RSUs) [Member]
12 Months Ended
Jun. 30, 2021
Rate
Jun. 30, 2020
Jun. 30, 2019
Compensation Peer Group [Member]      
RSU grant date weighted average fair value assumptions      
Volatility 25.20% 16.80% 15.30%
Risk free interest rate 0.11% 1.34% 2.89%
Dividend yield 1.00% 1.10% 0.90%
S&P 500 IT Index [Member]      
RSU grant date weighted average fair value assumptions      
Volatility 25.20% 16.80% 0.00%
Risk free interest rate 0.11% 1.34% 0.00%
Dividend yield 1.00% 1.10% 0.00%