Income Taxes (Schedule of the reconcilation of the effective income tax rate) (Details)	3 Months Ended	12 Months Ended
	May 29, 2016	May 28, 2017	May 29, 2016		May 31, 2015
Effective Income Tax Rate Reconciliation [Abstract]
United States statutory rate		35.00%	35.00%		35.00%
State and local income taxes, net of federal tax benefits		0.80%	0.70%		0.70%
Foreign rate differences		(3.50%)	(2.20%)		(3.10%)
Repatriation on foreign earnings		0.00%	0.00%		4.50%
Non-deductible goodwill		0.00%	2.60%		0.00%
Domestic manufacturing deduction		(2.80%)	(2.00%)		(2.90%)
Other, net		(0.70%)	(2.70%)	[1]	(0.90%)
Effective income tax rate	19.20%	28.80%	31.40%		33.30%
General Mills de Venezuela CA Subsidiary [Member]
Divestitures [Line Items]
Effective income tax rate reconciliation, tax benefit related to divestiture			(0.60%)

[1] Fiscal 2016 includes 0.6 percent tax benefit related to the divestiture of our business in Venezuela. See Note 3 for additional information.