Nature of Operations and Summary of Significant Accounting Policies Treasury Stock (Details) - USD ($) shares in Thousands, $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Class of Stock Disclosures [Abstract]
Treasury Stock, Common, Shares	31,043		29,793
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	3,948		5,198
Treasury Stock, Value	$ 1,807,119		$ 1,613,202
Treasury Stock, Shares, Acquired	1,250	675	2,800