Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 27, 2022	Feb. 28, 2021	Feb. 27, 2022	Feb. 28, 2021
CONSOLIDATED STATEMENTS OF EARNINGS [ABSTRACT]
Net sales	$ 4,537.7	$ 4,520.0	$ 14,101.6	$ 13,603.4
Cost of sales	3,134.0	2,966.1	9,469.3	8,738.0
Selling, general, and administrative expenses	751.4	716.3	2,337.6	2,256.6
Divestitures gain	(170.1)	0.0	(170.1)	0.0
Restructuring, impairment, and other exit costs	7.1	11.0	5.1	11.9
Operating profit	815.3	826.6	2,459.7	2,596.9
Benefit plan non-service income	(27.1)	(33.4)	(84.4)	(99.6)
Interest, net	86.5	106.0	275.1	317.7
Earnings before income taxes and after-tax earnings from joint ventures	755.9	754.0	2,269.0	2,378.8
Income taxes	123.2	162.0	451.8	522.2
After-tax earnings from joint ventures	29.9	11.8	92.0	89.5
Net earnings, including earnings attributable to redeemable and noncontrolling interests	662.6	603.8	1,909.2	1,946.1
Net earnings attributable to redeemable and noncontrolling interests	2.3	8.1	24.7	23.1
Net earnings attributable to General Mills	$ 660.3	$ 595.7	$ 1,884.5	$ 1,923.0
Earnings per share - basic	$ 1.09	$ 0.97	$ 3.10	$ 3.13
Earnings per share - diluted	$ 1.08	$ 0.96	$ 3.07	$ 3.10