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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 25, 2012 restaurant | Dec. 27, 2011 restaurant | Dec. 28, 2010
Principles of Consolidation |  |  |
Number of minority ownership restaurants | 392 | 366 |
Fiscal Year |  |  |
Length of fiscal year | 364 days | 364 days | 364 days
Cash and Cash Equivalents |  |  |
Cash and cash equivalents included receivables from credit card entity | $ 19.7 | $ 5.0 |
Settlement period of credit card receivables, minimum | 2 years |  |
Settlement period of credit card receivables, maximum | 3 years |  |
Receivables |  |  |
Minimum number of days financing receivable are past due, for considering for individual evaluation | 120 days |  |
Minimum |  |  |
Fiscal Year |  |  |
Length of fiscal year | 364 days |  |
Length of fiscal quarter | 91 days |  |
Maximum |  |  |
Fiscal Year |  |  |
Length of fiscal year | 371 days |  |
Length of fiscal quarter | 98 days |  |
Unconsolidated restaurants |  |  |
Principles of Consolidation |  |  |
Number of minority ownership restaurants | 23 | 22 |
Unconsolidated restaurants | Minimum |  |  |
Principles of Consolidation |  |  |
Ownership interest (as a percent) | 5.00% |  |
Unconsolidated restaurants | Maximum |  |  |
Principles of Consolidation |  |  |
Ownership interest (as a percent) | 10.00% |  |

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- Definition Represents the minimum number of days financing receivables are past due, for which individual evaluation will be done. + References No definition available. + Details
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- Definition The number of weeks in the entity's fiscal quarter. + References No definition available. + Details
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- Definition Amounts receivable from issuing a card to individuals or businesses that allows someone to make a purchase on borrowed money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Represents the number of restaurants. + References No definition available. + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7880789&loc=SL6759159-111685 + Details
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