Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 29, 2020	Nov. 24, 2019	Nov. 29, 2020	Nov. 24, 2019
CONSOLIDATED STATEMENTS OF EARNINGS [ABSTRACT]
Net sales	$ 4,719.4	$ 4,420.8	$ 9,083.4	$ 8,423.3
Cost of sales	2,998.3	2,851.7	5,771.9	5,464.7
Selling, general, and administrative expenses	804.1	759.0	1,540.3	1,477.9
Restructuring, impairment, and other exit costs (recoveries)	0.4	(1.1)	0.9	7.1
Operating profit	916.6	811.2	1,770.3	1,473.6
Benefit plan non-service income	(32.9)	(30.2)	(66.2)	(60.4)
Interest, net	100.6	119.4	211.7	238.1
Earnings before income taxes and after-tax earnings from joint ventures	848.9	722.0	1,624.8	1,295.9
Income taxes	189.4	155.5	360.2	222.7
After-tax earnings from joint ventures	36.4	24.9	77.7	46.7
Net earnings, including earnings attributable to redeemable and noncontrolling interests	695.9	591.4	1,342.3	1,119.9
Net earnings attributable to redeemable and noncontrolling interests	7.5	10.6	15.0	18.5
Net earnings attributable to General Mills	$ 688.4	$ 580.8	$ 1,327.3	$ 1,101.4
Earnings per share - basic	$ 1.12	$ 0.96	$ 2.16	$ 1.82
Earnings per share - diluted	$ 1.11	$ 0.95	$ 2.14	$ 1.80