CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Accounting Standards Update 2016-13	Treasury Stock
Balance, beginning of year (value) at Jun. 30, 2019			$ 1,035	$ 472,029	$ 2,066,073	$ 0	$ (1,110,124)
Shares, beginning of year at Jun. 30, 2019			103,496,026
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (value)			$ 0	0
Shares issued for equity-based payment arrangements (shares)			52,336
Tax withholding related to share based compensation				(3,739)
Shares issued for Employee Stock Purchase Plan (value)			$ 1	9,832
Shares issued for Employee Stock Purchase Plan (shares)			74,201
Stock-based compensation expense (value)				16,883
Net income	$ 296,668				296,668
Dividends					(127,421)
Purchase of treasury shares							(71,549)
Balance, end of year (value) at Jun. 30, 2020	$ 1,549,688		$ 1,036	495,005	2,235,320	(493)	(1,181,673)
Shares, end of year at Jun. 30, 2020			103,622,563
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.66
Preferred Shares		0
Shares issued for equity-based payment arrangements (value)			$ 1	1
Shares issued for equity-based payment arrangements (shares)			92,747
Tax withholding related to share based compensation				(7,720)
Shares issued for Employee Stock Purchase Plan (value)			$ 1	10,930
Shares issued for Employee Stock Purchase Plan (shares)			79,859
Stock-based compensation expense (value)				20,746
Net income	$ 311,469				311,469
Dividends					(133,800)
Purchase of treasury shares							(431,529)
Balance, end of year (value) at Jun. 30, 2021	$ 1,319,292		$ 1,038	518,960	2,412,496	$ 0	(1,613,202)
Shares, end of year at Jun. 30, 2021			103,795,169
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.78
Preferred Shares		0
Shares issued for equity-based payment arrangements (value)			$ 0	0
Shares issued for equity-based payment arrangements (shares)			46,669
Tax withholding related to share based compensation				(4,152)
Shares issued for Employee Stock Purchase Plan (value)			$ 1	11,772
Shares issued for Employee Stock Purchase Plan (shares)			79,886
Stock-based compensation expense (value)				24,780
Net income	$ 362,916				362,916
Dividends					(139,070)
Purchase of treasury shares							(193,916)
Balance, end of year (value) at Jun. 30, 2022	$ 1,381,623		$ 1,039	$ 551,360	$ 2,636,342		$ (1,807,118)
Shares, end of year at Jun. 30, 2022			103,921,724
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.90
Preferred Shares		0