Stock Plans (Tables)

12 Months Ended

May 31, 2020

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
	2020			2019			2018
Estimated fair values of stock options granted	$	7.10		$	5.35		$	6.18
Assumptions:
Risk-free interest rate		2.0	%		2.9	%		2.2	%
Expected term		8.5	years		8.5	years		8.2	years
Expected volatility		17.4	%		16.3	%		15.8	%
Dividend yield		3.6	%		4.3	%		3.6	%

Information on stock option activity [Table Text Block]

	Options Outstanding (Thousands)		Weighted-Average Exercise Price Per Share	Weighted-Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (Millions)
Balance as of May 26, 2019	23,653.0	$	47.12	4.82	$	180.00
Granted	2,065.0		53.70
Exercised	(7,066.0)		37.98
Forfeited or expired	(487.4)		55.91
Outstanding as of May 31, 2020	18,164.6	$	51.21	5.53	$	222.6
Exercisable as of May 31, 2020	8,706.4	$	47.28	3.25	$	137.3

Net cash proceeds and intrinsic value of options exercised [Table Text Block]

		Fiscal Year
In Millions		2020		2019		2018
Net cash proceeds	$	263.4	$	241.4	$	99.3
Intrinsic value of options exercised	$	132.9	$	126.7	$	83.6

Information on restricted stock unit and performance share 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
Non-vested as of May 26, 2019	4,272.3	$	53.87	108.1	$	55.45
Granted	1,913.4		53.27	34.2		53.64
Vested	(1,039.7)		55.81	(29.5)		56.38
Forfeited or expired	(220.5)		53.00	(9.5)		53.73
Non-vested as of May 31, 2020	4,925.5	$	53.26	103.3	$	54.75

		Fiscal Year
		2020		2019		2018
Number of units granted (thousands)		1,947.6		1,848.2		1,551.3
Weighted-average price per unit	$	53.28	$	46.14	$	55.12