Stock Plans (Tables)

9 Months Ended

Feb. 28, 2021

Stock Plans [Abstract]

Schedule of compensation expense related to stock-based payments [Table Text Block]

	Quarter Ended				Nine-Month Period Ended
In Millions	Feb. 28, 2021			Feb. 23, 2020	Feb. 28, 2021		Feb. 23, 2020
Compensation expense related to stock-based payments	$	20.8	$	18.2	$	69.5	$	66.0

	Quarter Ended				Nine-Month Period Ended
In Millions	Feb. 28, 2021		Feb. 23, 2020		Feb. 28, 2021		Feb. 23, 2020
Windfall tax benefits from stock-based payments	$	1.6	$	4.1	$	8.4	$	12.3

Schedule of net cash proceeds received from the exercise of stock options [Table Text Block]

	Nine-Month Period Ended
In Millions	Feb. 28, 2021		Feb. 23, 2020
Net cash proceeds	$	39.4	$	109.4
Intrinsic value of options exercised	$	24.2	$	54.0

Schedule of estimated fair value of stock options granted and the assumptions used for the Black-Scholes option-pricing model [Table Text Block]

	Nine-Month Period Ended
	Feb. 28, 2021			Feb. 23, 2020
Estimated fair values of stock options granted	$	8.03		$	7.10
Assumptions:
Risk-free interest rate		0.7	%		2.0	%
Expected term		8.5	years		8.5	years
Expected volatility		19.5	%		17.4	%
Dividend yield		3.3	%		3.6	%

Schedule of information on restricted stock and performance share unit activity [Table Text Block]

	Nine-Month Period Ended
In Millions		Feb. 28, 2021		Feb. 23, 2020
Total grant date fair value	$	73.0	$	57.1