Other Items (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Other Items Impacting Comparability [Abstract]
Foreign currency translation benefit (1)	$ 0	$ 1,904

Amount of currency translation adjustment recognized into income upon substantially liquidating a foreign operation's net assets.

No definition available.

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