Quarterly Data (Unaudited) (Details) (USD $) In Millions, except Per Share data	3 Months Ended	12 Months Ended
May 29, 2011	Feb. 27, 2011	Nov. 28, 2010	Aug. 29, 2010	May 30, 2010	Feb. 28, 2010	Nov. 29, 2009	Aug. 30, 2009	May 29, 2011	May 30, 2010	May 31, 2009
Quarterly Financials [Abstract]
Net sales	$ 3,634.3	$ 3,646.2	$ 4,066.6	$ 3,533.1	$ 3,529.2	$ 3,589.3	$ 4,034.7	$ 3,482.4	$ 14,880.2	$ 14,635.6	$ 14,555.8
Gross Margin	1,364.4	1,430.8	1,634.0	1,524.3	1,271.3	1,359.8	1,728.3	1,440.8
Net earnings attributable to General Mills	320.2	392.1	613.9	472.1	211.9	332.5	565.5	420.6	1,798.3	1,530.5	1,304.4
Earnings per share - basic	$ 0.50	$ 0.61	$ 0.96	$ 0.73	$ 0.32	$ 0.50	$ 0.86	$ 0.64	$ 2.80	$ 2.32	$ 1.96
Earnings per share - diluted	$ 0.48	$ 0.59	$ 0.92	$ 0.70	$ 0.31	$ 0.48	$ 0.83	$ 0.62	$ 2.6950	$ 2.24	$ 1.90
Dividends per share	$ 0.28	$ 0.28	$ 0.28	$ 0.28	$ 0.24	$ 0.25	$ 0.23	$ 0.24	$ 1.12	$ 0.96	$ 0.86
Market Price Of Common Stock High	$ 39.95	$ 37.20	$ 37.54	$ 38.93	$ 36.96	$ 36.18	$ 34.56	$ 30.20	$ 39.95	$ 36.96
Market Price Of Common Stock Low	$ 35.99	$ 34.60	$ 34.99	$ 33.57	$ 34.74	$ 34.00	$ 28.99	$ 25.59	$ 35.99	$ 34.74
Repurchase Interest Expense Amount					40.1
Deferred Other Tax Expense Benefit					$ 35.0

The highest market price of one share of common stock during the period.

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The lowest market price of one share of common stock during the period.

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This is the amount of interest expense incurred during the reporting period as a result of note repurchases.

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Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
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The change during the period in the entity's deferred tax assets and liabilities attributable to continuing operations as determined by applying enacted tax laws other than federal, domestic, foreign, state or local. Items affecting deferred income taxes and required to be disclosed, but not included elsewhere, would also be designated as "Other"; for example, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity and adjustments to be beginning-of-year balance of a valuation allowance because of a change in circumstance that causes a change in judgment about the realizability of the related deferred tax asset in future periods.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
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The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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-Publisher FASB
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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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-Number 210
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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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