CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Common Stock	Addi- tional Paid-in Capital	Retained Earnings	Treasury Stock	AOCI	Non-controlling Interest
Beginning balance at Oct. 31, 2023	$ 6,813,202	$ 1,129	$ 698,548	$ 6,675,719	$ (619,150)	$ 40,910	$ 16,046
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,095,786			1,095,786
Purchase of treasury stock	(427,064)				(427,064)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	(1,862)		(31,799)		29,937
Stock-based compensation	25,951		25,951
Dividends declared	(70,231)			(70,231)
Other comprehensive loss	(4,872)					(4,872)
Loss attributable to non-controlling interest	(667)						(667)
Capital contributions – net	803						803
Ending balance at Jul. 31, 2024	7,431,046	1,129	692,700	7,701,274	(1,016,277)	36,038	16,182
Beginning balance at Apr. 30, 2024	7,324,194	1,129	689,259	7,350,235	(772,476)	39,827	16,220
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	374,611			374,611
Purchase of treasury stock	(245,852)				(245,852)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	1,680		(371)		2,051
Stock-based compensation	3,812		3,812
Dividends declared	(23,572)			(23,572)
Other comprehensive loss	(3,789)					(3,789)
Loss attributable to non-controlling interest	(227)						(227)
Capital contributions – net	189						189
Ending balance at Jul. 31, 2024	7,431,046	1,129	692,700	7,701,274	(1,016,277)	36,038	16,182
Beginning balance at Oct. 31, 2024	7,686,715	1,129	694,713	8,153,356	(1,209,547)	31,277	15,787
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	899,771			899,771
Purchase of treasury stock	(402,468)				(402,468)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	(21,275)		(38,131)		16,856
Stock-based compensation	27,110		27,110
Dividends declared	(72,987)			(72,987)
Other comprehensive loss	(5,507)					(5,507)
Loss attributable to non-controlling interest	(755)						(755)
Capital contributions – net	603						603
Ending balance at Jul. 31, 2025	8,111,207	1,129	683,692	8,980,140	(1,595,159)	25,770	15,635
Beginning balance at Apr. 30, 2025	7,964,415	1,129	679,434	8,634,857	(1,394,825)	28,130	15,690
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	369,621			369,621
Purchase of treasury stock	(201,358)				(201,358)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	967		(57)		1,024
Stock-based compensation	4,315		4,315
Dividends declared	(24,338)			(24,338)
Other comprehensive loss	(2,360)					(2,360)
Loss attributable to non-controlling interest	(257)						(257)
Capital contributions – net	202						202
Ending balance at Jul. 31, 2025	$ 8,111,207	$ 1,129	$ 683,692	$ 8,980,140	$ (1,595,159)	$ 25,770	$ 15,635