Dispositions (Details) $ in Millions		3 Months Ended	9 Months Ended
	Jul. 28, 2014 restaurant	Feb. 28, 2016 USD ($) property	Feb. 28, 2016 USD ($) property	May. 31, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land, buildings and equipment, carrying amount		$ 19.0	$ 19.0	$ 32.9
Red Lobster
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of restaurants sold | restaurant	705
Number of properties subject to contractual requirements satisfied | property		2
Remaining number of properties subject to contractual requirements | property			2
Gain on sale of discontinued operation			$ 854.4
Properties Subject to Contractual Requirements | Red Lobster
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses			$ 1.6
Transition service agreement period (up to)			2 years