Acquisitions - Pro Forma Financial Information (Details) - Maxim - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Jul. 31, 2021	Jul. 31, 2021
Business Acquisition [Line Items]
Revenue	$ 2,506,950	$ 7,005,648
Net income	$ 485,904	$ 1,111,411
Basic net income per common share (in dollars per share)	$ 0.90	$ 2.07
Diluted net income per common share (in dollars per share)	$ 0.89	$ 2.04