Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]
Beginning balance at Oct. 31, 2021	$ 5,340,455	$ 1,279	$ 714,453	$ 4,969,839	$ (391,656)	$ 1,109	$ 45,431
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	645,964			645,964
Purchase of treasury stock	(383,886)				(383,886)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	(1,410)		(17,880)		16,470
Stock-based compensation	19,258		19,258
Dividends declared	(67,307)			(67,307)
Other Comprehensive Income (Loss), Net of Tax	15,630					15,630
Net income (loss) attributable to noncontrolling interest	86						86
Capital contributions (distributions) – net	(29,743)						(29,743)
Ending balance at Jul. 31, 2022	5,539,047	1,279	715,831	5,548,496	(759,072)	16,739	15,774
Beginning balance at Apr. 30, 2022	5,379,666	1,279	714,651	5,297,939	(669,396)	19,419	15,774
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	273,467			273,467
Purchase of treasury stock	(91,607)				(91,607)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	873		(1,058)		1,931
Stock-based compensation	2,238		2,238
Dividends declared	(22,910)			(22,910)
Other Comprehensive Income (Loss), Net of Tax	(2,680)					(2,680)
Ending balance at Jul. 31, 2022	5,539,047	1,279	715,831	5,548,496	(759,072)	16,739	15,774
Beginning balance at Oct. 31, 2022	6,021,840	1,279	716,786	6,166,732	(916,327)	37,618	15,752
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	926,535			926,535
Purchase of treasury stock	(240,486)				(240,486)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	47,089		(42,319)		89,408
Stock-based compensation	21,290		21,290
Dividends declared	(68,981)			(68,981)
Other Comprehensive Income (Loss), Net of Tax	1,858					1,858
Net income (loss) attributable to noncontrolling interest	(446)						(446)
Capital contributions (distributions) – net	1,784						1,784
Ending balance at Jul. 31, 2023	6,710,483	1,279	695,757	7,024,286	(1,067,405)	39,476	17,090
Beginning balance at Apr. 30, 2023	6,435,726	1,279	697,583	6,632,502	(945,019)	33,875	15,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	414,789			414,789
Purchase of treasury stock	(147,283)				(147,283)
Exercise of stock options, stock based compensation issuances, and employee stock purchase plan issuances	18,806		(6,091)		24,897
Stock-based compensation	4,265		4,265
Dividends declared	(23,005)			(23,005)
Other Comprehensive Income (Loss), Net of Tax	5,601					5,601
Net income (loss) attributable to noncontrolling interest	(200)						(200)
Capital contributions (distributions) – net	(1,784)						(1,784)
Ending balance at Jul. 31, 2023	$ 6,710,483	$ 1,279	$ 695,757	$ 7,024,286	$ (1,067,405)	$ 39,476	$ 17,090