CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 25, 2013	Aug. 26, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net earnings, including earnings attributable to redeemable and noncontrolling interests	$ 468.1	$ 562.1
Other comprehensive income (loss), net of tax:
Foreign currency translation	(86.6)	65.4
Other fair value changes:
Securities	0.2	0.2
Hedge derivatives	12.1	(7.5)
Reclassification to earnings:
Hedge derivatives	(2.0)	3.8
Amortization of losses and prior service costs	26.4	24.7
Other comprehensive income (loss), net of tax	(49.9)	86.6
Total comprehensive income	418.2	648.7
Comprehensive income attributable to redeemable and noncontrolling interests	44.0	18.6
Comprehensive income attributable to General Mills	$ 374.2	$ 630.1