Consolidated Statement of Changes in Shareholder's Equity Consolidated Statment of Changes in Shareholder's Equity (Parenthetical) - shares	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	166,000	283,000
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance - Common Stock Outstanding (shares)	145,738,300	133,423,600	125,049,900
Stock Issued During Period, Shares, New Issues	16,195,900	11,431,400,000	7,354,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	853,800	883,300,000	1,019,500
Ending Balance - Common Stock Outstanding (shares)	162,788,000.0	145,738,300	133,423,600