Other Matters (Details) (Superstorm Sandy [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Oct. 28, 2012
Superstorm Sandy [Member]
Other Matters [Line Items]
Storm damage liability incurred before tax		$ 8
Storm damage liability incurred after-tax		5
Carrying value of storm damaged property expected to be recovered	$ 15.7

Storm Damage, Carrying Value of Property Expected to be Recovered

No definition available.

Name:	r_StormDamageCarryingValueOfPropertyExpectedToBeRecovered
Namespace Prefix:	r_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant