Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional ‎Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated ‎Other ‎Comprehensive Income (Loss)
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2023		188,901,000
Beginning balance at Jun. 30, 2023	$ 4,129,903	$ 588	$ 1,772,083	$ (1,623,256)	$ 4,253,016	$ (272,528)
Treasury stock, common, beginning balance (in shares) at Jun. 30, 2023				(41,836,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (in shares)		17,000
Common stock issued on exercise of options	983		983
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (in shares)		3,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax	(225)		(225)
Stock-based compensation costs	18,510		18,510
Other comprehensive income (loss)	(47,620)					(47,620)
Net income	219,422				219,422
Dividends declared	(70,597)				(70,597)
Common stock, shares outstanding, ending balance (in shares) at Sep. 30, 2023		188,921,000
Treasury stock, common, ending balance (in shares) at Sep. 30, 2023				(41,836,000)
Ending balance at Sep. 30, 2023	4,250,376	$ 588	1,791,351	$ (1,623,256)	4,401,841	(320,148)
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2023		188,901,000
Beginning balance at Jun. 30, 2023	4,129,903	$ 588	1,772,083	$ (1,623,256)	4,253,016	(272,528)
Treasury stock, common, beginning balance (in shares) at Jun. 30, 2023				(41,836,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	728,715
Common stock, shares outstanding, ending balance (in shares) at Mar. 31, 2024		189,319,000
Treasury stock, common, ending balance (in shares) at Mar. 31, 2024				(42,432,000)
Ending balance at Mar. 31, 2024	4,629,920	$ 588	1,847,938	$ (1,723,263)	4,769,963	(265,306)
Common stock, shares outstanding, beginning balance (in shares) at Sep. 30, 2023		188,921,000
Beginning balance at Sep. 30, 2023	4,250,376	$ 588	1,791,351	$ (1,623,256)	4,401,841	(320,148)
Treasury stock, common, beginning balance (in shares) at Sep. 30, 2023				(41,836,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (in shares)		24,000
Common stock issued on exercise of options	1,557		1,557
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (in shares)		163,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax	(7,797)	$ 1	(7,798)
Common stock issued on employee stock purchase plan (shares)		151,000
Common stock issued on employee stock purchase plan	17,967	$ 1	17,966
Treasury stock purchases (in shares)				(336,000)
Treasury stock purchases	(50,007)	$ (2)	2	$ (50,007)
Stock-based compensation costs	19,840		19,840
Other comprehensive income (loss)	111,796					111,796
Net income	208,800				208,800
Dividends declared	(70,678)				(70,678)
Common stock, shares outstanding, ending balance (in shares) at Dec. 31, 2023		189,259,000
Treasury stock, common, ending balance (in shares) at Dec. 31, 2023				(42,172,000)
Ending balance at Dec. 31, 2023	4,481,854	$ 588	1,822,918	$ (1,673,263)	4,539,963	(208,352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (in shares)		54,000
Common stock issued on exercise of options	4,679		4,679
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (in shares)		6,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax	(314)		(314)
Common stock issued on employee stock purchase plan	213		213
Treasury stock purchases (in shares)				(260,000)
Treasury stock purchases	(50,000)			$ (50,000)
Stock-based compensation costs	20,442		20,442
Other comprehensive income (loss)	(56,954)					(56,954)
Net income	300,492				300,492
Dividends declared	(70,492)				(70,492)
Common stock, shares outstanding, ending balance (in shares) at Mar. 31, 2024		189,319,000
Treasury stock, common, ending balance (in shares) at Mar. 31, 2024				(42,432,000)
Ending balance at Mar. 31, 2024	$ 4,629,920	$ 588	1,847,938	$ (1,723,263)	4,769,963	(265,306)
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2024	146,901,045	189,565,000
Beginning balance at Jun. 30, 2024	$ 4,864,043	$ 588	1,896,604	$ (1,773,267)	4,991,647	(251,529)
Treasury stock, common, beginning balance (in shares) at Jun. 30, 2024	(42,664,067)			(42,664,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to common stock amount	$ 0	$ 170	(170)
Common stock issued on exercise of options (in shares)		92,000
Common stock issued on exercise of options	8,383		8,383
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (in shares)		5,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax	(389)		(389)
Treasury stock purchases (in shares)				(222,000)
Treasury stock purchases	(50,005)			$ (50,005)
Stock-based compensation costs	20,156		20,156
Other comprehensive income (loss)	119,374					119,374
Net income	311,355				311,355
Dividends declared	(77,891)				(77,891)
Common stock, shares outstanding, ending balance (in shares) at Sep. 30, 2024		189,662,000
Treasury stock, common, ending balance (in shares) at Sep. 30, 2024				(42,886,000)
Ending balance at Sep. 30, 2024	$ 5,195,026	$ 758	1,924,584	$ (1,823,272)	5,225,111	(132,155)
Common stock, shares outstanding, beginning balance (in shares) at Jun. 30, 2024	146,901,045	189,565,000
Beginning balance at Jun. 30, 2024	$ 4,864,043	$ 588	1,896,604	$ (1,773,267)	4,991,647	(251,529)
Treasury stock, common, beginning balance (in shares) at Jun. 30, 2024	(42,664,067)			(42,664,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 1,021,018
Common stock, shares outstanding, ending balance (in shares) at Mar. 31, 2025	146,618,775	190,126,000
Treasury stock, common, ending balance (in shares) at Mar. 31, 2025	(43,507,013)			(43,507,000)
Ending balance at Mar. 31, 2025	$ 5,546,133	$ 761	1,990,137	$ (1,973,284)	5,779,375	(250,856)
Common stock, shares outstanding, beginning balance (in shares) at Sep. 30, 2024		189,662,000
Beginning balance at Sep. 30, 2024	5,195,026	$ 758	1,924,584	$ (1,823,272)	5,225,111	(132,155)
Treasury stock, common, beginning balance (in shares) at Sep. 30, 2024				(42,886,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (in shares)		63,000
Common stock issued on exercise of options	6,904		6,904
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (in shares)		215,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax	(16,734)	$ 2	(16,736)
Common stock issued on employee stock purchase plan (shares)		109,000
Common stock issued on employee stock purchase plan	19,973		19,973
Treasury stock purchases (in shares)				(307,000)
Treasury stock purchases	(74,986)			$ (74,986)
Stock-based compensation costs	22,634		22,634
Other comprehensive income (loss)	(166,735)					(166,735)
Net income	344,622				344,622
Dividends declared	(77,695)				(77,695)
Common stock, shares outstanding, ending balance (in shares) at Dec. 31, 2024		190,049,000
Treasury stock, common, ending balance (in shares) at Dec. 31, 2024				(43,193,000)
Ending balance at Dec. 31, 2024	5,253,009	$ 760	1,957,359	$ (1,898,258)	5,492,038	(298,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued on exercise of options (in shares)		74,000
Common stock issued on exercise of options	9,023	$ 1	9,022
Common stock issued on vesting of restricted stock units, net of shares withheld for tax (in shares)		3,000
Common stock issued on vesting of restricted stock units, net of shares withheld for tax	(364)		(364)
Treasury stock purchases (in shares)				(314,000)
Treasury stock purchases	(75,026)			$ (75,026)
Stock-based compensation costs	24,120		24,120
Other comprehensive income (loss)	48,034					48,034
Net income	365,041				365,041
Dividends declared	$ (77,704)				(77,704)
Common stock, shares outstanding, ending balance (in shares) at Mar. 31, 2025	146,618,775	190,126,000
Treasury stock, common, ending balance (in shares) at Mar. 31, 2025	(43,507,013)			(43,507,000)
Ending balance at Mar. 31, 2025	$ 5,546,133	$ 761	$ 1,990,137	$ (1,973,284)	$ 5,779,375	$ (250,856)