Stockholders' Equity (Schedule of Reclassification Adjustments out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 23, 2020	Feb. 28, 2021	Feb. 23, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Less general and administrative expenses	$ (78.9)	$ (100.3)	$ (298.8)	$ (289.6)
Earnings before income taxes	132.3	265.1	270.5	449.3
Tax benefit (expense)	(3.1)	(31.8)	(7.1)	(18.8)
Net earnings	128.7	232.3	260.8	427.6
Amount Reclassified from AOCI into Net Earnings | Derivatives
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings before income taxes	1.1	(0.5)	0.4	(0.2)
Tax benefit (expense)	0.0	0.0	0.2	0.2
Net earnings	1.1	(0.5)	0.6	0.0
Amount Reclassified from AOCI into Net Earnings | Derivatives | Commodity contracts:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Food and beverage costs and restaurant expenses	(0.2)	(0.5)	(1.1)	(1.1)
Amount Reclassified from AOCI into Net Earnings | Derivatives | Equity contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Restaurant labor costs and general and administrative expenses	1.3	0.0	1.6	1.0
Amount Reclassified from AOCI into Net Earnings | Derivatives | Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Restaurant labor costs and general and administrative expenses	0.0	0.0	(0.1)	(0.1)
Amount Reclassified from AOCI into Net Earnings | Benefit plan funding position
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings before income taxes	(0.6)	0.7	(1.7)	(146.5)
Tax benefit (expense)	0.1	(0.1)	0.4	36.6
Net earnings	(0.5)	0.6	(1.3)	(109.9)
Amount Reclassified from AOCI into Net Earnings | Benefit plan funding position | Pension and postretirement plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Restaurant labor costs and general and administrative expenses	0.0	(0.1)	(0.1)	(148.9)
Amount Reclassified from AOCI into Net Earnings | Benefit plan funding position | Other plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Less general and administrative expenses	$ (0.6)	$ 0.8	$ (1.6)	$ 2.4