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Business Segment Information (Schedule of Net Sales To External Customers By Country Of Domicile) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Apr. 30, 2015 | Apr. 30, 2014 | Apr. 30, 2015 | Apr. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Total net sales to external customers | $ 434,676 us-gaap_SalesRevenueNet | $ 412,317 us-gaap_SalesRevenueNet | $ 879,847 us-gaap_SalesRevenueNet | $ 817,297 us-gaap_SalesRevenueNet
United States [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total net sales to external customers | 197,387 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 189,559 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 401,262 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US | 377,251 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_US
Europe [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total net sales to external customers | 154,683 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 131,418 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 313,750 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 260,464 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
Rest Of World [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total net sales to external customers | $ 82,606 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = coo_RestOfWorldOtherEliminationsAndCorporateMember | $ 91,340 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = coo_RestOfWorldOtherEliminationsAndCorporateMember | $ 164,835 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = coo_RestOfWorldOtherEliminationsAndCorporateMember | $ 179,582 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = coo_RestOfWorldOtherEliminationsAndCorporateMember

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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