OTHER ITEMS IMPACTING COMPARABILITY (Details) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($)
Other Income and Expenses [Abstract]
Other items	$ 2,205

Pension-Related Adjustments and Certain Professional Fees

No definition available.

Name:	r_PensionRelatedAdjustmentsAndCertainProfessionalFees
Namespace Prefix:	r_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration