Earnings per Share Information (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Numerator:
Net income as reported	$ 352,447	$ 481,617	$ 530,150	$ 721,175
Denominator:
Basic weighted-average (in shares)	99,890	104,794	100,360	104,958
Common stock equivalents (in shares)	695	1,009	848	1,076
Diluted weighted-average (in shares)	100,585	105,803	101,208	106,034
Shares issued under stock incentive and employee stock purchase plans (in shares)	11	154	379	675
Restricted Stock Units RSU And Employee Stock Option Member
Denominator:
Weighted-average number of antidilutive options and restricted stock units (in shares)	123	7	126	72