Nature of Operations and Summary of Significant Accounting Policies Treasury Stock (Details) - USD ($) shares in Thousands, $ in Thousands	9 Months Ended
	Mar. 31, 2020	Jun. 30, 2019
Class of Stock Disclosures [Abstract]
Treasury Stock, Common, Shares	26,993	26,508
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,998	3,483
Treasury Stock, Value	$ 1,181,673	$ 1,110,124
Treasury Stock, Shares, Acquired	485