Environmental Matters (Details) (USD $)	12 Months Ended
Dec. 31, 2014 DisposalSite	Dec. 31, 2013	Dec. 31, 2012
Environmental Remediation Obligations [Abstract]
Number of disposal sites	19r_NumberOfDisposalSites
Environmental expenses	$ 7,000,000r_EnvironmentalExpenses	$ 9,000,000r_EnvironmentalExpenses	$ 7,000,000r_EnvironmentalExpenses
Environmental liabilities	$ 11,879,000r_AccruedEnvironmentalLiabilities	$ 13,063,000r_AccruedEnvironmentalLiabilities

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. Also includes normal recurring expenses such as licensing, testing and waste disposal fees.

No definition available.

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