Stockholders' Equity (Schedule of Reclassification Adjustments out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 31, 2020	Feb. 23, 2020	Nov. 24, 2019	Aug. 25, 2019	May 26, 2019	Feb. 24, 2019	Nov. 25, 2018	Aug. 26, 2018	May 31, 2020	May 26, 2019	May 27, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Less general and administrative expenses									$ (376.4)	$ (405.5)	$ (409.8)
Earnings before income taxes	$ (610.3)	$ 265.1	$ (6.2)	$ 190.4	$ 217.9	$ 253.1	$ 135.3	$ 176.0	(161.0)	782.3	605.7
Tax benefit (expense)									111.8	(63.7)	(1.9)
Net earnings (loss)	$ (480.0)	$ 232.3	$ 24.7	$ 170.6	$ 208.0	$ 223.6	$ 115.6	$ 166.2	(52.4)	713.4	$ 596.0
Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings before income taxes									(1.4)	5.5
Tax benefit (expense)									0.7	(0.1)
Net earnings (loss)									(0.7)	5.4
Actuarial losses | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial losses									(148.9)	(2.5)
Benefit plan funding position | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings before income taxes									(145.6)	0.8
Tax benefit (expense)									36.3	(6.4)
Net earnings (loss)									(109.3)	(5.6)
Commodity contracts | Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Food and beverage costs and restaurant expenses									(2.3)	0.7
Equity contracts | Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
General and administrative expenses									1.0	4.9
Interest rate contracts | Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Food and beverage costs and restaurant expenses									(0.1)	(0.1)
Pension and postretirement plan | Benefit plan funding position | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
General and administrative expenses									(148.9)	(2.5)
Other plans | Benefit plan funding position | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Less general and administrative expenses									$ 3.3	$ 3.3