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Stock Plans (Narrative) (Details) (USD $) | 12 Months Ended
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Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Cash received from exercises under all share-based payment arrangements | $ 8,585,000 us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions | $ 19,287,000 us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions | $ 55,053,000 us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions
Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected requisite service period for options granted to employees (in months) | 60 months |  |
Total intrinsic value of options exercised | 46,700,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |
Total unrecognized compensation cost expected to be recognized | 4,900,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |
Total unrecognized compensation cost expected to be recognized over a remaining weighted-average vesting period (in years) | 3 years |  |
Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance cycle | 3 years |  |
Percentage of performance units granted | 150.00%coo_PercentageOfEarningsInPerformanceShares / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |
Total unrecognized compensation cost expected to be recognized | 8,200,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |
Total unrecognized compensation cost expected to be recognized over a remaining weighted-average vesting period (in years) | 1 year 7 months 6 days |  |
2006 Directors Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of non-employee directors in committee | 2 coo_NumberOfNonEmployeeDirectorsInCommittee / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember |  |
Number of shares authorized to be granted | 950,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember |  |
Shares remaining for future grant | 211,598 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember |  |
Award expiration date (in years) | 10 years |  |
2006 Directors Plan [Member] | Non Employee Directors [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Right to purchase shares of common stock awarded, per share amount | $ 0.10 us-gaap_DeferredCompensationArrangementWithIndividualExercisePrice / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember / us-gaap_TitleOfIndividualAxis = coo_NonEmployeeDirectorsMember |  |
2006 Directors Plan [Member] | Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award expiration date (in years) | 10 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 1 year |  |
Weighted average fair value of options granted | $ 44.20 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember | $ 32.20 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember |
2007 LTIP [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of non-employee directors in committee | 2 coo_NumberOfNonEmployeeDirectorsInCommittee / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember |  |
Number of shares authorized to be granted | 5,230,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember |  |
Shares remaining for future grant | 1,484,564 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember |  |
Percentage fair market value of equity awards on grant date | 100.00%coo_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEquityAwardsGranted / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember |  |
Award expiration date (in years) | 10 years |  |
2007 LTIP [Member] | Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average fair value of options granted | $ 41.73 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember | $ 31.51 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember |
2007 LTIP [Member] | Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total unrecognized compensation cost expected to be recognized | 40,900,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_PlanNameAxis = coo_TwoThousandSevenLongTermIncentivePlanMember |  |
Total unrecognized compensation cost expected to be recognized over a remaining weighted-average vesting period (in years) | 3 years 4 months 24 days |  |
November 15 [Member] | 2006 Directors Plan [Member] | Non Employee Directors [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferred Compensation Arrangement With Individual Amounts Authorized For Issuance | 135,000 coo_DeferredCompensationArrangementWithIndividualAmountsAuthorizedForIssuance / us-gaap_AwardDateAxis = coo_November15Member / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember / us-gaap_TitleOfIndividualAxis = coo_NonEmployeeDirectorsMember |  |
November 15 [Member] | 2006 Directors Plan [Member] | Non Executive Chairman [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferred Compensation Arrangement With Individual Amounts Authorized For Issuance | 148,000 coo_DeferredCompensationArrangementWithIndividualAmountsAuthorizedForIssuance / us-gaap_AwardDateAxis = coo_November15Member / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember / us-gaap_TitleOfIndividualAxis = coo_NonExecutiveChairmanMember |  |
November 1 [Member] | 2006 Directors Plan [Member] | Non Employee Directors [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferred Compensation Arrangement With Individual Amounts Authorized For Issuance | 135,000 coo_DeferredCompensationArrangementWithIndividualAmountsAuthorizedForIssuance / us-gaap_AwardDateAxis = coo_November1Member / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember / us-gaap_TitleOfIndividualAxis = coo_NonEmployeeDirectorsMember |  |
November 1 [Member] | 2006 Directors Plan [Member] | Non Executive Chairman [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferred Compensation Arrangement With Individual Amounts Authorized For Issuance | $ 148,500 coo_DeferredCompensationArrangementWithIndividualAmountsAuthorizedForIssuance / us-gaap_AwardDateAxis = coo_November1Member / us-gaap_PlanNameAxis = coo_TwoThousandSixDirectorsPlanMember / us-gaap_TitleOfIndividualAxis = coo_NonExecutiveChairmanMember |  |
Minimum [Member] | Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of performance units granted | 0.00%coo_PercentageOfEarningsInPerformanceShares / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Minimum [Member] | 2007 LTIP [Member] | Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years |  |
Minimum [Member] | 2007 LTIP [Member] | Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 4 years |  |
Maximum [Member] | Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of performance units granted | 150.00%coo_PercentageOfEarningsInPerformanceShares / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Maximum [Member] | 2007 LTIP [Member] | Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award expiration date (in years) | 10 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 5 years |  |
Maximum [Member] | 2007 LTIP [Member] | Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 5 years |  |

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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