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Guarantees (Details Textual) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Guarantor Obligations [Line Items]    
Maximum exposure of guarantee $ 50,615us-gaap_GuaranteeObligationsMaximumExposure $ 30,293us-gaap_GuaranteeObligationsMaximumExposure
Carrying amount of liability 0us-gaap_GuaranteeObligationsCurrentCarryingValue 6,234us-gaap_GuaranteeObligationsCurrentCarryingValue
Contingent rentals associated with residual value guarantees [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure of guarantee 225,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= r_ContingentRentalsAssociatedWithResidualValueGuaranteesMember		 120,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_GuaranteeObligationsByNatureAxis
= r_ContingentRentalsAssociatedWithResidualValueGuaranteesMember
Carrying amount of liability $ 200us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= r_ContingentRentalsAssociatedWithResidualValueGuaranteesMember		 $ 200us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_GuaranteeObligationsByNatureAxis
= r_ContingentRentalsAssociatedWithResidualValueGuaranteesMember