Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details 5)

v2.4.1.9
EMPLOYEE BENEFIT PLANS (Details 5) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2015
Components of net periodic pension benefit Gain        
Service cost $ 74us-gaap_DefinedBenefitPlanServiceCost $ 112us-gaap_DefinedBenefitPlanServiceCost $ 100us-gaap_DefinedBenefitPlanServiceCost  
Interest cost 9,427us-gaap_DefinedBenefitPlanInterestCost 8,551us-gaap_DefinedBenefitPlanInterestCost 9,622us-gaap_DefinedBenefitPlanInterestCost  
Expected return on plan assets (12,431)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets (11,589)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets (12,106)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets  
Amortization of net loss 2,439us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses 3,910us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses 3,606us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses  
Net periodic loss/(benefit) (491)us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost 984us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost 1,222us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost  
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income        
Pretax loss 44,159us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax (41,767)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax 18,991us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax  
Amortization of net loss (2,439)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax (3,910)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax (3,606)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax  
Total recognized in other comprehensive income 41,720us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax (45,677)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax 15,385us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax  
Total recognized in net periodic benefit cost and other comprehensive income 41,229rol_AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncome (44,693)rol_AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncome (16,607)rol_AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncome  
Market value of Common Stock of company included in Plan Assets 37,300rol_MarketValueOfCommonStockOfCompanyIncludedInPlanAssets 37,100rol_MarketValueOfCommonStockOfCompanyIncludedInPlanAssets    
Subsequent Event [Member]        
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income        
Amortization of net loss       $ (3,700)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember