Earnings Per Share Information (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Earnings Per Share [Abstract]
Net income as reported	$ 234,932	$ 114,761	$ 459,297	$ 247,307
Basic weighted-average shares	123,826	126,722	124,727	131,024
Common stock equivalents	1,784	677	1,663	1,008
Diluted weighted-average shares	125,610	127,399	126,390	132,032
Debt Instrument [Line Items]
Shares issued under stock incentive and employee stock purchase plans	64	342	938	950
Restricted Stock Units RSU And Employee Stock Option Member [Member]
Debt Instrument [Line Items]
Weighted-average number of antidilutive options and restricted stock units	37	3,640	220	2,761