Earnings Per Share Information (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Earnings Per Share [Abstract]
Net income as reported	$ 445,536	$ 414,789	$ 320,216	$ 191,530	$ 640,536	$ 273,467	$ 220,593	$ 151,904	$ 1,372,071	$ 1,286,500	$ 833,627
Basic weighted-average shares	107,465	110,003	111,214	111,397	112,914	115,334	117,839	120,996	110,020	116,771	124,100
Common stock equivalents									988	1,204	1,707
Diluted weighted-average shares	108,388	111,123	112,184	112,336	113,793	116,326	118,925	122,858	111,008	117,975	125,807
Debt Instrument [Line Items]
Shares Issued under Stock Incentive and Employee Stock Purchase Plans									2,026	507	1,011
Restricted Stock Units RSU And Employee Stock Option Member [Member]
Debt Instrument [Line Items]
Weighted average number of anti-dilutive options and restricted stock units									200	410	166