Long-term Debt and Other Financing Arrangements - Components of Long-term Debt (Net of Discounts and Debt Issuance Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2022	May 31, 2021
Debt Instrument [Line Items]
Total debt	$ 19,796
Finance lease obligations	468	$ 525
Total Debt and Finance Lease Obligations	20,264	20,879
Less current portion	82	146
LONG-TERM DEBT, LESS CURRENT PORTION	$ 20,182	$ 20,733
Senior Secured Debt Due 2034 1.875% [Member]
Debt Instrument [Line Items]
Interest Rate%	1.875%	1.875%
Maturity	2034	2034
Total debt	$ 881	$ 932
Senior Unsecured Debt Due 2026 3.25% [Member]
Debt Instrument [Line Items]
Interest Rate%	3.25%	3.25%
Maturity	2026	2026
Total debt	$ 747	$ 746
Senior Unsecured Debt Due 2028 3.40% [Member]
Debt Instrument [Line Items]
Interest Rate%	3.40%	3.40%
Maturity	2028	2028
Total debt	$ 497	$ 496
Senior Unsecured Debt Due 2029 4.20% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.20%	4.20%
Maturity	2029	2029
Total debt	$ 397	$ 397
Senior Unsecured Debt Due 2030 3.10-4.25% [Member]
Debt Instrument [Line Items]
Maturity	2030	2030
Total debt	$ 1,735	$ 1,733
Senior Unsecured Debt Due 2030 3.10-4.25% [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate%	4.25%	4.25%
Senior Unsecured Debt Due 2030 3.10-4.25% [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate%	3.10%	3.10%
Senior Unsecured Debt Due 2031 2.40% [Member]
Debt Instrument [Line Items]
Interest Rate%	2.40%	2.40%
Maturity	2031	2031
Total debt	$ 990	$ 989
Senior Unsecured Debt Due 2034 4.90% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.90%	4.90%
Maturity	2034	2034
Total debt	$ 496	$ 496
Senior Unsecured Debt Due 2035 3.90% [Member]
Debt Instrument [Line Items]
Interest Rate%	3.90%	3.90%
Maturity	2035	2035
Total debt	$ 495	$ 494
Senior Unsecured Debt Due 2041 3.25% [Member]
Debt Instrument [Line Items]
Interest Rate%	3.25%	3.25%
Maturity	2041	2041
Total debt	$ 740	$ 739
Senior Unsecured Debt Due 2043 3.875-4.10% [Member]
Debt Instrument [Line Items]
Maturity	2043	2043
Total debt	$ 985	$ 985
Senior Unsecured Debt Due 2043 3.875-4.10% [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate%	4.10%	4.10%
Senior Unsecured Debt Due 2043 3.875-4.10% [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate%	3.875%	3.875%
Senior Unsecured Debt Due 2044 5.10% [Member]
Debt Instrument [Line Items]
Interest Rate%	5.10%	5.10%
Maturity	2044	2044
Total debt	$ 742	$ 742
Senior Unsecured Debt Due 2045 4.10% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.10%	4.10%
Maturity	2045	2045
Total debt	$ 641	$ 641
Senior Unsecured Debt Due 2046 4.55-4.75% [Member]
Debt Instrument [Line Items]
Maturity	2046	2046
Total debt	$ 2,462	$ 2,461
Senior Unsecured Debt Due 2046 4.55-4.75% [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate%	4.75%	4.75%
Senior Unsecured Debt Due 2046 4.55-4.75% [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate%	4.55%	4.55%
Senior Unsecured Debt Due 2047 4.40% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.40%	4.40%
Maturity	2047	2047
Total debt	$ 736	$ 736
Senior Unsecured Debt Due 2048 4.05% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.05%	4.05%
Maturity	2048	2048
Total debt	$ 987	$ 986
Senior Unsecured Debt Due 2049 4.95% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.95%	4.95%
Maturity	2049	2049
Total debt	$ 836	$ 836
Senior Unsecured Debt Due 2050 5.25% [Member]
Debt Instrument [Line Items]
Interest Rate%	5.25%	5.25%
Maturity	2050	2050
Total debt	$ 1,226	$ 1,226
Senior Unsecured Debt Due 2065 4.50% [Member]
Debt Instrument [Line Items]
Interest Rate%	4.50%	4.50%
Maturity	2065	2065
Total debt	$ 246	$ 246
Senior Unsecured Debt Due 2098 7.60% [Member]
Debt Instrument [Line Items]
Interest Rate%	7.60%	7.60%
Maturity	2098	2098
Total debt	$ 237	$ 237
Euro Senior Unsecured Debt Due 2026 0.45% [Member]
Debt Instrument [Line Items]
Interest Rate%	0.45%	0.45%
Maturity	2026	2026
Total debt	$ 533	$ 607
Euro Senior Unsecured Debt Due 2027 1.625% [Member]
Debt Instrument [Line Items]
Interest Rate%	1.625%	1.625%
Maturity	2027	2027
Total debt	$ 1,332	$ 1,516
Euro Senior Unsecured Debt Due 2029 0.45% [Member]
Debt Instrument [Line Items]
Interest Rate%	0.45%	0.45%
Maturity	2029	2029
Total debt	$ 637	$ 725
Euro Senior Unsecured Debt Due 2032 1.30% [Member]
Debt Instrument [Line Items]
Interest Rate%	1.30%	1.30%
Maturity	2032	2032
Total debt	$ 530	$ 604
Euro Senior Unsecured Debt Due 2033 0.95% [Member]
Debt Instrument [Line Items]
Interest Rate%	0.95%	0.95%
Maturity	2033	2033
Total debt	$ 688	$ 784
Senior Unsecured Debt [Member]
Debt Instrument [Line Items]
Total debt	$ 18,915	$ 19,422