Rendering

Component: (Network and Table)
Network
2415409 - Disclosure - EMPLOYEE BENEFIT PLANS - Weighted-average Assumptions (Details)
(http://www.crl.com/role/EmployeeBenefitPlansWeightedAverageAssumptionsDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001100682 (http://www.sec.gov/CIK)
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]Pension Plans
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2015-12-27 - 2016-12-31
2014-12-28 - 2015-12-26
2013-12-29 - 2014-12-27
Weighted-average assumptions used to determine projected benefit obligations
 
 
 
Discount rate
3.01%  
3.89%  
 
Rate of compensation increase
3.25%  
3.17%  
 
Weighted-average assumptions used to determine net periodic benefit cost
 
 
 
Discount rate
3.89%  
3.75%  
4.44%  
Expected long-term return on plan assets
5.83%  
6.24%  
6.41%  
Rate of compensation increase
3.17%  
3.18%  
3.36%