CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Total Shareholders’ Equity	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance (in shares) at Jun. 30, 2022			42,820,000
Beginning balance at Jun. 30, 2022		$ 3,053,543	$ 4,282	$ 571,650	$ 3,555,881	$ (30,941)	$ (1,047,329)
Beginning balance of treasury stock (in shares) at Jun. 30, 2022							19,404,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 384,735	384,735			384,735
Stock-based compensation expense		39,643		39,643
Tax withholdings on restricted share vestings (in shares)			103,000
Tax withholdings on restricted share vestings		(14,399)	$ 10	(14,409)
Other comprehensive income (loss), net of tax	26,025	26,025				26,025
Repurchases of common stock		(275,176)		(50,614)			$ (224,562)
Repurchases of common stock (in shares)							759,000
Treasury stock issued under stock purchase plans		9,963		64			$ 9,899
Treasury stock issued under stock purchase plans (in shares)							(37,000)
Ending balance (in shares) at Jun. 30, 2023			42,923,000
Ending balance at Jun. 30, 2023		3,224,334	$ 4,292	546,334	3,940,616	(4,916)	$ (1,261,992)
Ending balance of treasury stock (in shares) at Jun. 30, 2023							20,126,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	419,924	419,924			419,924
Stock-based compensation expense		53,904		53,904
Tax withholdings on restricted share vestings (in shares)			119,000
Tax withholdings on restricted share vestings		(20,367)	$ 12	(20,379)
Other comprehensive income (loss), net of tax	(7,606)	(7,606)				(7,606)
Repurchases of common stock		(163,113)		50,951			$ (214,064)
Repurchases of common stock (in shares)							649,000
Treasury stock issued under stock purchase plans		11,131		381			$ 10,750
Treasury stock issued under stock purchase plans (in shares)							(35,000)
Ending balance (in shares) at Jun. 30, 2024			43,042,000
Ending balance at Jun. 30, 2024	$ 3,518,207	3,518,207	$ 4,304	631,191	4,360,540	(12,522)	$ (1,465,306)
Ending balance of treasury stock (in shares) at Jun. 30, 2024	20,740,000						20,740,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 499,830	499,830			499,830
Stock-based compensation expense		60,177		60,177
Tax withholdings on restricted share vestings (in shares)			126,000
Tax withholdings on restricted share vestings		(37,772)	$ 12	(37,784)
Other comprehensive income (loss), net of tax	5,644	5,644				5,644
Repurchases of common stock		(165,883)		(1,300)			$ (164,583)
Repurchases of common stock (in shares)							471,000
Treasury stock issued under stock purchase plans		13,742		43			$ 13,699
Treasury stock issued under stock purchase plans (in shares)							(36,000)
Ending balance (in shares) at Jun. 30, 2025			43,168,000
Ending balance at Jun. 30, 2025	$ 3,893,945	$ 3,893,945	$ 4,316	$ 652,327	$ 4,860,370	$ (6,878)	$ (1,616,190)
Ending balance of treasury stock (in shares) at Jun. 30, 2025	21,175,000						21,175,000