Operating Segments - Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Segment Reporting [Abstract]
Total profit for reportable segments	$ 128,896	$ 128,892	$ 213,177	$ 248,242
Interest expense	(12,372)	(12,127)	(24,738)	(23,445)
Interest and investment income	325	219	642	509
Other - net	(568)	1,135	(4,757)	(3,669)
Income before income taxes	$ 116,281	$ 118,119	$ 184,324	$ 221,637

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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