Name:	rt_DebtInstrumentGuaranteedFaceAmount
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	rt_FranchisePartnershipGuaranteesAbstract
Namespace Prefix:	rt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	rt_InsuranceProgramsAbstract
Namespace Prefix:	rt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of franchise partnerships.

No definition available.

Name:	rt_NumberOfFranchisePartnerships
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of franchise partnerships acquired during the period.

No definition available.

Name:	rt_NumberOfFranchisePartnershipsAcquired
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of loans guaranteed by the Company.

No definition available.

Name:	rt_NumberOfLoansGuaranteedByCompany
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

This element represents the number of restaurants closed during the period.

No definition available.

Name:	rt_NumberOfRestaurantsClosed
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of restaurants closed before the acquisition by the entity during the period.

No definition available.

Name:	rt_NumberOfRestaurantsClosedBeforeAcquisitionTransaction
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of restaurants operated by the franchise acquired by the entity on date of acquisition.

No definition available.

Name:	rt_NumberOfRestaurantsOperatedByFranchisesAcquired
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents number of restaurants violated the age discrimination.

No definition available.

Name:	rt_NumberOfRestaurantsViolatedAgeDiscrimination
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The cash outflow during the period from the payment of guarantee on debt.

No definition available.

Name:	rt_PaymentsOfGuaranteeOnDebt
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The percentage of the guarantee of a debt instrument.

No definition available.

Name:	rt_PercentageOfGuaranteeOfLoan
Namespace Prefix:	rt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The period of the credit facility commitment entered into.

No definition available.

Name:	rt_PeriodOfCreditFacilityCommitment
Namespace Prefix:	rt_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

The amount of guaranteed debt repaid by the acquiree upon acquisition during the period.

No definition available.

Name:	rt_RepaymentOfGuaranteedDebtByAcquireeUponPurchase
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Retained liabilities for casualty losses and healthcare claims, including reported and incurred but not reported claims, which were committed under letters of credit as of the balance sheet date.

No definition available.

Name:	rt_RetainedLiabilitiesForCasualtyLossesAndHealthcareClaims
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	us-gaap_LossContingencyInformationAboutLitigationMattersAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The total amount of pending claims pertaining to a loss contingency accrual as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Amount of insurance benefit, claims, loss and settlement expenses paid to the policyholders during the current accounting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 18

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-18)

-URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e575016-122915

Name:	us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration