Acquisition of Cheddar's Scratch Kitchen (Allocation of Purchase Price) (Details) - USD ($) $ in Millions	Aug. 27, 2017	May 28, 2017	Apr. 24, 2017
Business Acquisition [Line Items]
Goodwill	$ 1,172.2	$ 1,201.7
Cheddar's Scratch Kitchen
Business Acquisition [Line Items]
Current assets			$ 48.2
Land, buildings and equipment			200.8
Trademark			375.0
Other assets			22.6
Goodwill			299.9
Total assets acquired			946.5
Current liabilities			46.1
Other liabilities			100.6
Total liabilities assumed			146.7
Net assets acquired			799.8
Preliminary | Cheddar's Scratch Kitchen
Business Acquisition [Line Items]
Current assets			48.2
Land, buildings and equipment			191.9
Trademark			375.0
Other assets			2.2
Goodwill			329.4
Total assets acquired			946.7
Current liabilities			43.4
Other liabilities			104.3
Total liabilities assumed			147.7
Net assets acquired			799.0
Adjustments | Cheddar's Scratch Kitchen
Business Acquisition [Line Items]
Current assets			0.0
Land, buildings and equipment			8.9
Trademark			0.0
Other assets			20.4
Goodwill			(29.5)
Total assets acquired			(0.2)
Current liabilities			2.7
Other liabilities			(3.7)
Total liabilities assumed			(1.0)
Net assets acquired			$ 0.8