Note O - Fair Value Measurements (Details) (Construction in Progress [Member], USD $) In Millions, unless otherwise specified	Dec. 03, 2013	Jun. 04, 2013
Construction in Progress [Member]
Note O - Fair Value Measurements (Details) [Line Items]
Assets Held for Sale, Property Plant and Equipment, Noncurrent	$ 13.5	$ 14.8

Property, plant and equipment that is held for sale apart from normal operations and are not anticipated to be sold in less than one year.

No definition available.

Name:	rt_AssetsHeldForSalePropertyPlantAndEquipmentNoncurrent
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant