EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		May 31, 2026	May 31, 2025	May 31, 2024
Shares Under Restricted Stock-based Awards [Abstract]
Beginning balance		117	138	152
Granted		23	38	47
Vested and issued		(47)	(52)	(53)
Canceled		(12)	(7)	(8)
Ending balance		81	117	138
Weighted Average Grant Date Fair Value [Abstract]
Beginning balance		$ 108.91	$ 83.43	$ 69.09
Granted		243.23	159.11	110.26
Vested and issued		98.06	78.30	66.97
Canceled		132.82	99.44	77.52
Ending balance		$ 149.88	$ 108.91	$ 83.43
Total grant date fair value of restricted stock-based awards, vested and issued		$ 4,700	$ 4,000	$ 3,500
Unrecognized compensation expense related to non-vested restricted stock-based awards		$ 8,900
Weighted average recognition period of unrecognized compensation expense for shares expected to vest		3 years 3 months 18 days
Shares Under Stock Option [Abstract]
Beginning balance		41	51	64
Granted and assumed		15	0	2
Exercised		(25)	(10)	(15)
Canceled		(10)
Ending balance		21	41	51
Vested		5
Expected to vest	[1]	15
Total		20
Weighted Average Exercise Price [Abstract]
Beginning balance		$ 52.58	$ 51.05	$ 45.42
Granted and assumed		279.53	0	113.91
Exercised		50.04	44.84	34.84
Canceled		60.51
Ending balance		217.63	$ 52.58	$ 51.05
Vested		49.37
Expected to vest	[1]	275.9
Total		$ 223.97
Weighted Average Remaining Contract Term (in years) [Abstract]
Vested		1 year 7 months 20 days
Expected to vest		9 years 4 months 6 days
Total		7 years 6 months 29 days
Aggregate Intrinsic Value (in millions) [Abstract]
Vested	[2]	$ 789
Expected to vest	[1],[2]	95
Total	[2]	$ 884
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Closing stock price		$ 225.78
Unrecognized compensation expense for shares expected to vest		$ 1,800
Shares not expected to vest		1
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		$ 4,811	$ 4,674	$ 3,974
Estimated income tax benefit included in provision for income taxes		(1,100)	(1,050)	(913)
Total stock-based compensation, net of estimated income tax benefit		3,711	3,624	3,061
Other Postretirement Plans [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total defined benefit plan pension expense		73	69	$ 71
Aggregate projected benefit obligation		1,100	1,100
Aggregate net liability (funded status)		$ (256)	$ (350)
Employee Stock Purchase Plan [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Stock purchase price as a percentage of the fair market value on the purchase date		95.00%
Shares reserved for future issuances under the purchase plan		33
Common stock issued under stock purchase plans		1	1	2
Cloud and Software [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		$ 622	$ 609	$ 525
Hardware [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		27	29	23
Services [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		210	202	167
Sales and marketing [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		759	757	667
Research and development [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		2,805	2,638	2,225
General and administrative [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation		$ 388	$ 439	$ 367
Restricted Stock Units [Member]
Weighted Average Grant Date Fair Value [Abstract]
Weighted average recognition period of unrecognized compensation expense for shares expected to vest		2 years 8 months 19 days
Service-based and Performance-based Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life (in years)		6 years 8 months 12 days
Risk-free interest rate		3.80%
Volatility		51.00%
Dividend yield		0.70%
Weighted-average fair value per share		$ 142.64

[1] The unrecognized compensation expense calculated under the fair value method for shares expected to vest as of May 31, 2026 was $1.8 billion and is expected to be recognized over a weighted-average period of 3.30 years. Approximately 1 million shares outstanding as of May 31, 2026 were not expected to vest.

[2] The aggregate intrinsic value was calculated based on the gross difference between our closing stock price on the last trading day of fiscal 2026 of $225.78 and the exercise prices for all “in-the-money” options outstanding, excluding tax effects.