Stockholders' Equity (Schedule of Reclassification Adjustments out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 26, 2019	Feb. 24, 2019	Nov. 25, 2018	Aug. 26, 2018	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 26, 2019	May 27, 2018	May 28, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate contracts									$ (50.2)	$ (161.1)	$ (40.2)
Earnings before income taxes	$ 217.9	$ 253.1	$ 135.3	$ 176.0	$ 216.8	$ 116.0	$ 113.4	$ 159.5	782.3	605.7	637.3
Tax benefit (expense)									(63.7)	(1.9)	(154.8)
Net earnings	$ 208.0	$ 223.6	$ 115.6	$ 166.2	$ 174.5	$ 217.8	$ 84.7	$ 119.0	713.4	596.0	479.1
General and administrative expenses									405.5	409.8	$ 387.7
Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings before income taxes									5.5	0.0
Tax benefit (expense)									(0.1)	0.0
Net earnings									5.4	0.0
Actuarial losses | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial losses									(2.5)	(2.8)
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									0.8	0.2
Tax benefit (expense)									(6.4)	(0.1)
Net earnings									(5.6)	0.1
Commodity contracts | Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Costs of goods and services sold									0.7	0.3
Equity contracts | Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
General and administrative expenses									4.9	(0.2)
Interest rate contracts | Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate contracts									(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									2.5	2.8
Other plans | 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									$ 3.3	$ 3.0