Consolidated Statements of Comprehensive Income (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 COMPREHENSIVE INCOME [ABSTRACT]
Net earnings, including earnings attributable to redeemable and noncontrolling interests	$ 662.6	$ 603.8	$ 1,909.2	$ 1,946.1
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(122.5)	12.5	(184.9)	102.4
Other fair value changes:
Hedge derivatives	(30.8)	0.1	(10.4)	(10.1)
Reclassification to earnings:
Foreign currency translation	342.2	0.0	342.2	0.0
Amortization of losses and prior service costs	22.3	19.8	53.5	59.1
Hedge derivatives	30.2	5.4	34.4	4.7
Other comprehensive (loss) income, net of tax	241.4	37.8	234.8	156.1
Total comprehensive income	904.0	641.6	2,144.0	2,102.2
Comprehensive income (loss) attributable to redeemable and noncontrolling interests	2.3	21.0	(47.0)	107.5
Comprehensive income attributable to General Mills	$ 901.7	$ 620.6	$ 2,191.0	$ 1,994.7