Guarantees and Other Commitments and Contingencies Franchisee Image Activation Incentive Programs (Details) - Maximum	9 Months Ended
Oct. 01, 2017
Guarantor Obligations [Line Items]
Years of reduction in royalty payment attributable to new builds	2 years
Years of reduction in royalty payment attributable to incentive program	1 year

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration