CONSOLIDATED STATEMENTS OF EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 25, 2018	Feb. 26, 2017	Feb. 25, 2018	Feb. 26, 2017
CONSOLIDATED STATEMENTS OF EARNINGS [ABSTRACT]
Net sales	$ 3,882.3	$ 3,793.2	$ 11,850.2	$ 11,813.2
Cost of sales	2,627.0	2,485.5	7,841.8	7,569.1
Selling, general, and administrative expenses	655.1	687.6	2,045.8	2,107.9
Divestiture loss	0.0	0.0	0.0	13.5
Restructuring, impairment, and other exit costs	7.5	77.6	14.3	165.5
Operating profit	592.7	542.5	1,948.3	1,957.2
Interest, net	89.3	76.4	236.6	225.8
Earnings before income taxes and after-tax earnings from joint ventures	503.4	466.1	1,711.7	1,731.4
Income taxes	(432.5)	107.0	(29.1)	511.0
After-tax earnings from joint ventures	16.6	11.1	64.1	65.1
Net earnings, including earnings attributable to redeemable and noncontrolling interests	952.5	370.2	1,804.9	1,285.5
Net earnings attributable to redeemable and noncontrolling interests	11.1	12.4	28.3	36.9
Net earnings attributable to General Mills	$ 941.4	$ 357.8	$ 1,776.6	$ 1,248.6
Earnings per share - basic	$ 1.64	$ 0.62	$ 3.1	$ 2.12
Earnings per share - diluted	1.62	0.61	3.05	2.08
Dividends per share	$ 0.49	$ 0.48	$ 1.47	$ 1.44