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Operating Segments - Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2018 | Jul. 31, 2017 | Jul. 31, 2018 | Jul. 31, 2017
Segment Reporting [Abstract] |  |  |  |
Total profit for reportable segments | $ 135,576 | $ 153,466 | $ 380,004 | $ 332,914
Interest expense | (13,765) | (11,306) | (37,210) | (24,854)
Interest and investment income | 356 | 268 | 865 | 813
Other - net | 528 | 27 | 673 | (1,452)
Income before income taxes | $ 122,695 | $ 142,455 | $ 344,332 | $ 307,421

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