Short-Term Borrowings and Long-Term Debt (Details) $ in Millions	May 31, 2021 USD ($)
Senior Notes
Debt Instrument [Line Items]
Par Value	$ 7,000
0.550% notes due May 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.55%
Par Value	$ 1,000
1.150% notes due May 2026
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.15%
Par Value	$ 1,000
2.300% notes due May 2031
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.30%
Par Value	$ 1,500
3.050% notes due May 2041
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.05%
Par Value	$ 1,500
3.250% notes due May 2051
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.25%
Par Value	$ 2,000