Impairments, Exit Costs and Disposals Impairments, Exit Costs and Disposals (Refranchising) (Details) - Carrabba's Italian Grill [Member] - Disposal group, disposed of by sale, not discontinued operations [Member] $ in Millions	Mar. 31, 2019 USD ($) Restaurants
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of restaurants | Restaurants	18
Proceeds from sale of a business, net of cash divested | $	$ 3.6