CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]
Balance, beginning of period (value) at Jun. 30, 2023			$ 1,041	$ 583,836	$ 2,855,751	$ (1,832,118)
Shares, beginning of period at Jun. 30, 2023			104,088,784
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			65,042
Shares issued for Employee Stock Purchase Plan (shares)			68,906
Shares issued for equity-based payment arrangements (value)			$ 1	0
Tax withholding related to share-based compensation				(5,343)
Shares issued for Employee Stock Purchase Plan (value)			0	9,408
Stock-based compensation expense				22,404
Net Income	$ 280,743				280,743
Dividends					(115,792)
Purchase of treasury shares						(20,000)
Balance, end of period (value) at Mar. 31, 2024	$ 1,779,931		$ 1,042	610,305	3,020,702	(1,852,118)
Shares, end of period at Mar. 31, 2024			104,222,732
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.59
Balance, beginning of period (value) at Dec. 31, 2023			$ 1,042	601,790	2,973,673	(1,852,118)
Shares, beginning of period at Dec. 31, 2023			104,181,060
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			17,382
Shares issued for Employee Stock Purchase Plan (shares)			24,290
Shares issued for equity-based payment arrangements (value)			$ 0	0
Tax withholding related to share-based compensation				(1,782)
Shares issued for Employee Stock Purchase Plan (value)			0	3,373
Stock-based compensation expense				6,924
Net Income	$ 87,099				87,099
Dividends					(40,070)
Purchase of treasury shares						0
Balance, end of period (value) at Mar. 31, 2024	$ 1,779,931		$ 1,042	610,305	3,020,702	(1,852,118)
Shares, end of period at Mar. 31, 2024			104,222,732
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 0.55
Preferred Shares		0
Balance, beginning of period (value) at Jun. 30, 2024	$ 1,842,364		$ 1,042	619,805	3,081,690	(1,860,173)
Shares, beginning of period at Jun. 30, 2024			104,245,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			90,267
Shares issued for Employee Stock Purchase Plan (shares)			59,453
Shares issued for equity-based payment arrangements (value)			$ 1	1
Tax withholding related to share-based compensation				(7,660)
Shares issued for Employee Stock Purchase Plan (value)			1	8,686
Stock-based compensation expense				22,412
Net Income	328,144				328,144
Dividends					(122,464)
Purchase of treasury shares						(35,052)
Balance, end of period (value) at Mar. 31, 2025	$ 2,036,431		$ 1,044	643,242	3,287,370	(1,895,225)
Shares, end of period at Mar. 31, 2025			104,394,809
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.68
Balance, beginning of period (value) at Dec. 31, 2024			$ 1,044	633,211	3,218,533	(1,877,223)
Shares, beginning of period at Dec. 31, 2024			104,370,424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for equity-based payment arrangements (shares)			1,052
Shares issued for Employee Stock Purchase Plan (shares)			23,333
Shares issued for equity-based payment arrangements (value)			$ 0	0
Tax withholding related to share-based compensation				(319)
Shares issued for Employee Stock Purchase Plan (value)			0	3,477
Stock-based compensation expense				6,873
Net Income	$ 111,108				111,108
Dividends					(42,271)
Purchase of treasury shares						(18,002)
Balance, end of period (value) at Mar. 31, 2025	$ 2,036,431		$ 1,044	$ 643,242	$ 3,287,370	$ (1,895,225)
Shares, end of period at Mar. 31, 2025			104,394,809
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 0.58
Preferred Shares		0