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Stock Plans (Schedule of Stock Option Plans) (Details) (Stock Options [Member], USD $)
 12 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Number of Shares:    
Outstanding at October 31, 2013 1,708,676us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Granted 164,166us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross  
Exercised 522,165us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised  
Forfeited or expired 26,741us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod  
Outstanding at October 31, 2014 1,323,936us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Vested and exercisable at October 31, 2014 900,031us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber  
Weighted-Average Exercise Price Per Share:    
Outstanding at October 31, 2013 $ 54.58us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Granted $ 121.25us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice  
Exercised $ 52.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice  
Forfeited or expired $ 81.76us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice  
Outstanding at October 31, 2014 $ 63.32us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Vested and exercisable at October 31, 2014 $ 48.02us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice  
Outstanding at October 31, 2014, Weighted Average Remaining Contractual Term (in years) 5 years 6 months 10 days  
Vested and exercisable at October 31, 2014, Weighted Average Remaining Contractual Term (in years) 4 years 4 months 12 days  
Vested and exercisable at October 31, 2014, Aggregate Intrinsic Value $ 104,293,959us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue  
2007 LTIP [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average fair value of options granted $ 41.73us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= coo_TwoThousandSevenLongTermIncentivePlanMember		 $ 31.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= coo_TwoThousandSevenLongTermIncentivePlanMember
2007 LTIP [Member] | Minimum [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  
2007 LTIP [Member] | Maximum [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  
2006 Directors Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average fair value of options granted $ 44.20us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= coo_TwoThousandSixDirectorsPlanMember		 $ 32.20us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= coo_TwoThousandSixDirectorsPlanMember
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year