Restructuring and Related Activities (Details) - One-time Termination Benefits $ in Millions	3 Months Ended	6 Months Ended
	Nov. 30, 2020 USD ($)	Nov. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring, expected cost	$ 315	$ 315
Restructuring charges	137	175
Restructuring Reserve [Roll Forward]
Beginning Balance	34	0
Employee termination costs	137	175
Payments for Restructuring	(67)	(71)
Ending Balance	104	104
Operating Overhead Expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	107	145
Restructuring Reserve [Roll Forward]
Employee termination costs	107	145
Stock-based compensation expense	30	39
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	30	30
Restructuring Reserve [Roll Forward]
Employee termination costs	30	30
Stock-based compensation expense	$ 4	$ 4