Other Items (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013
Other Items Impacting Comparability [Abstract]
Recognition of benefit from currency translation adjustment into income	$ 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