Background (Details) - USD ($) $ in Millions	Feb. 28, 2021	Nov. 29, 2020	May 31, 2020	Feb. 23, 2020	Nov. 24, 2019	May 26, 2019
Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract]
Equity	$ 9,187.9	$ 8,852.6	$ 8,349.5	$ 7,860.1	$ 8,020.6	$ 7,367.7
Retained Earnings [Member]
Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract]
Equity	$ 16,655.0	$ 16,374.2	15,982.1	$ 15,360.0	$ 15,501.8	14,996.7
Retained Earnings [Member] | Cumulative Effect Period Of Adoption [Member]
Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract]
Equity			$ (5.7)			$ 0.0