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Incentive Plans and Stock-Based Compensation (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 12 Months Ended
Mar. 25, 2014
Nov. 29, 2014
Nov. 30, 2013
Dec. 01, 2012
Mar. 25, 2014
Stock Options          
Weighted-average period, over which the Company expects to recognize compensation cost related to share-based arrangements (in years)   4 years      
Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares granted in performance awards to officers, directors and key employees 6,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
      6,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Number of years which shares can be granted under the Plan 10 years        
Incentive plan end date Apr. 01, 2024        
Stock Options          
Annual employee vesting percentage   25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
     
Award vesting period (in years)   4 years      
Expiration period and term of equity award (in years)   10 years      
Granted (in options)   450,700us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
387,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
512,850us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Weighted average exercise price - granted (in dollars per share)   $ 61.49us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
$ 45.25us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
$ 49.84us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Unrecognized compensation cost related to share-based awards which the Company expects to recognize   $ 5,019us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
     
Weighted-average period, over which the Company expects to recognize compensation cost related to share-based arrangements (in years)   2 years 15 days      
Restricted Stock Units (RSUs) [Member]          
Stock Options          
Award vesting period (in years)   4 years      
Unrecognized compensation cost related to share-based awards which the Company expects to recognize   $ 1,235us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
     
Weighted-average period, over which the Company expects to recognize compensation cost related to share-based arrangements (in years)   2 years 4 months 26 days      
Restricted Stock Unit Awards          
Restricted stock unit awards - shares vested and deferred   19,457clc_RestrictedStockUnitAwardsSharesVestedAndDeferred
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
14,760clc_RestrictedStockUnitAwardsSharesVestedAndDeferred
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Granted (in shares)   24,808us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
23,624us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
29,839us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Weighted average grant date fair value - granted (in dollars per share)   $ 61.42us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
$ 45.19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
$ 49.91us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Employee Stock [Member]          
Restricted Stock Unit Awards          
Employee stock purchase plan, discount   5.00%clc_EmployeeStockOwnershipPlanEsopPlanPurchaseDiscount
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember