Short-Term Borrowings - Commitments under revolving credit agreements (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 12, 2025	May 31, 2026	May 31, 2025
Short-term Debt [Line Items]
Term in Years			30 years
Revolving credit agreements
Short-term Debt [Line Items]
Total Commitment		$ 3,500
Letters of Credit Outstanding		7
Available Amount		$ 3,493
Revolving credit agreements | Three-year agreement
Short-term Debt [Line Items]
Term in Years	3 years	3 years
Total Commitment		$ 1,745
Letters of Credit Outstanding		0
Available Amount		$ 1,745
Revolving credit agreements | Three-year agreement maturing on Nov 28, 2027
Short-term Debt [Line Items]
Term in Years		3 years
Total Commitment		$ 50
Letters of Credit Outstanding		0
Available Amount		$ 50
Maturity		Nov. 28, 2027
Annual Facility Fee		0.075%
Revolving credit agreements | Three Year Agreement Mature On Nov 28, 2028
Short-term Debt [Line Items]
Term in Years		3 years
Total Commitment		$ 1,695
Letters of Credit Outstanding		0
Available Amount		$ 1,695
Maturity		Nov. 28, 2028
Annual Facility Fee		0.075%
Revolving credit agreements | Four-year agreement maturing on Nov 28, 2028
Short-term Debt [Line Items]
Term in Years		4 years
Total Commitment		$ 1,755
Letters of Credit Outstanding		7
Available Amount		$ 1,748
Maturity		Nov. 28, 2029
Annual Facility Fee		0.10%