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Stock Plans (Tables)
12 Months Ended
May 26, 2013
STOCK PLANS [Abstract]  
Estimated fair value of stock options granted and the assumptions used for the Black-Scholes option-pricing model [Table Text Block]
  Fiscal Year
  2013 2012 2011
Estimated fair values of stock options granted  $ 3.65 $ 5.88 $ 4.12
Assumptions:      
Risk-free interest rate  1.6%  2.9%  2.9%
Expected term  9.0years  8.5years  8.5years
Expected volatility  17.3%  17.6%  18.5%
Dividend yield  3.5%  3.3%  3.0%
Information on stock option activity [Table Text Block]
 Options Exercisable (Thousands) Weighted-Average Exercise Price Per ShareOptions Outstanding (Thousands) Weighted-Average Exercise Price Per Share
Balance as of May 30, 2010 47,726.6  22.89 81,104.6  25.17
Granted    5,234.3  37.38
Exercised    (18,665.4)  22.59
Forfeited or expired    (126.2)  31.26
Balance as of May 29, 2011 39,221.7  23.78 67,547.3  26.82
Granted    4,069.0  37.29
Exercised    (10,279.3)  24.12
Forfeited or expired    (394.3)  27.88
Balance as of May 27, 2012 39,564.9  25.27 60,942.7  27.96
Granted    3,407.7  38.15
Exercised    (16,534.6)  23.49
Forfeited or expired    (143.7)  34.06
Balance as of May 26, 2013 29,290.3$ 27.69 47,672.1$ 30.22
Net cash proceeds from the exercise of stock options less shares used for withholding taxes and the intrinsic value of options exercised [Table Text Block]
  Fiscal Year
In Millions 2013  2012  2011
Net cash proceeds$ 300.8 $ 233.5 $ 410.4
Intrinsic value of options exercised$ 297.2 $ 156.7 $ 275.6
Information on restricted stock unit and cash-settled share-based units activity [Table Text Block]
  Equity Classified Liability Classified
  Share-Settled Units (Thousands) Weighted-Average Grant-Date Fair Value Share-Settled Units (Thousands) Weighted-Average Grant-Date Fair Value Cash-Settled Share-Based Units (Thousands) Weighted-Average Grant-Date Fair Value
Non-vested as of May 27, 2012  8,551.8$ 33.79  397.1$ 32.68  3,991.5$ 31.58
Granted  2,330.4  38.42  74.5  38.15  -  -
Vested  (2,495.0)  32.05  (73.0)  31.68  (1,638.2)  31.64
Forfeited or expired  (345.0)  36.00  (10.4)  35.60  (65.5)  32.31
Non-vested as of May 26, 2013  8,042.2$ 35.89  388.2$ 32.60  2,287.8$ 38.41
Prior years' information on restricted stock unit activity [Table Text Block]
  Fiscal Year
  2013  2012  2011
Number of units granted (thousands)  2,404.9   2,785.7   3,751.6
Weighted average price per unit$ 38.41 $ 37.29 $ 36.16