Other Operating Income And Expenses (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
Dec. 31, 2012	Aug. 31, 2014	Aug. 31, 2013 2013 Company Drive-In Closures Member store	Aug. 31, 2013 2013 Company Drive-In Closures Member store
Property Subject to or Available for Operating Lease [Line Items]
Loss on closure of Company Drive-Ins			$ 2.4	$ 2.4
Carrying value of assets at time of sale	38.4
Proceeds from sale	$ 29.7	$ 8.7
Number of Restaurants			12	12

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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