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Business Segment Information (Schedule of Segment Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2018 | Jul. 31, 2017 | Jul. 31, 2018 | Jul. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 660,000 | $ 556,000 | $ 1,881,300 | $ 1,577,500
Operating income (loss) | 115,600 | 112,800 | 280,400 | 320,600
Interest expense | 22,800 | 8,300 | 59,900 | 23,300
Other expense (income), net | 2,400 | (3,200) | 1,300 | (100)
Income before income taxes | 90,400 | 107,700 | 219,200 | 297,400
CooperVision |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 489,100 | 437,300 | 1,401,400 | 1,235,000
Operating income (loss) | 125,400 | 109,500 | 361,100 | 308,900
CooperSurgical |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 170,900 | 118,700 | 479,900 | 342,500
Operating income (loss) | 1,600 | 14,900 | (37,500) | 48,200
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) | (11,400) | (11,600) | (43,200) | (36,500)
Toric lens | CooperVision |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 153,600 | 138,300 | 442,200 | 390,800
Multifocal lens | CooperVision |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 52,700 | 46,800 | 148,800 | 132,100
Single-use sphere lens | CooperVision |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 137,600 | 115,800 | 378,300 | 319,500
Non single-use sphere and other | CooperVision |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 145,200 | $ 136,400 | $ 432,100 | $ 392,600

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