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Stock-Based Compensation (Details 2) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Restricted stock awards    
Stock-based compensation    
Vesting period of shares awarded under the Program 3 years  
Restricted Stock Units    
Performance share awards    
Grant date fair value (in dollars per share) 90.54us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Performance share awards    
Stock-based compensation    
Vesting period of shares awarded under the Program 3 years  
Performance share awards    
Grant date fair value (in dollars per share) 112.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= csl_PerformanceShareAwardMember
 
Deferred Compensation Plan    
Performance share awards    
Number of common stock deferred (in shares) 237,930us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
/ us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis
= us-gaap_DeferredCompensationShareBasedPaymentsMember
228,047us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
/ us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis
= us-gaap_DeferredCompensationShareBasedPaymentsMember