Quarterly Data (Schedule Of Unaudited Quarterly Data) (Details) - USD ($) $ / shares in Units, $ 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
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Sales	$ 1,270.1	$ 2,346.5	$ 2,056.4	$ 2,133.9	$ 2,229.1	$ 2,246.5	$ 1,973.4	$ 2,061.4	$ 7,806.9	$ 8,510.4	$ 8,080.1
Earnings (loss) 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
Earnings (loss) from continuing operations	(479.7)	233.3	25.4	171.8	208.7	225.1	115.9	168.9	(49.2)	718.6	603.8
Losses from discontinued operations, net of tax	(0.3)	(1.0)	(0.7)	(1.2)	(0.7)	(1.5)	(0.3)	(2.7)	(3.2)	(5.2)	(7.8)
Net earnings	(480.0)	$ 232.3	$ 24.7	$ 170.6	$ 208.0	$ 223.6	$ 115.6	$ 166.2	(52.4)	713.4	596.0
Pension settlement charge									$ 145.5	$ 0.0	$ 0.0
Impairment charges	$ 390.0
Basic net earnings per share:
Earnings (loss) from continuing operations (in dollars per share)	$ (3.85)	$ 1.92	$ 0.21	$ 1.40	$ 1.70	$ 1.83	$ 0.94	$ 1.36	$ (0.40)	$ 5.82	$ 4.87
Losses from discontinued operations (in dollars per share)	(0.01)	0	(0.01)	(0.01)	(0.01)	(0.02)	(0.01)	(0.02)	(0.03)	(0.04)	(0.06)
Net earnings (loss) (in dollars per share)	(3.86)	1.92	0.20	1.39	1.69	1.81	0.93	1.34	(0.43)	5.78	4.81
Diluted net earnings per share:
Earnings (loss) from continuing operations (in dollars per share)	(3.85)	1.90	0.21	1.38	1.67	1.80	0.92	1.34	(0.40)	5.73	4.79
Losses from discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.01)	(0.01)	0	(0.01)	0	(0.02)	(0.03)	(0.04)	(0.06)
Net earnings (loss) (in dollars per share)	$ (3.86)	$ 1.89	$ 0.20	$ 1.37	$ 1.67	$ 1.79	$ 0.92	$ 1.32	$ (0.43)	$ 5.69	$ 4.73
Defined Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension settlement charge			$ 147.1