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RESTRUCTURING ACTIVITIES Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Nov. 30, 2025
Nov. 30, 2024
Nov. 30, 2025
Nov. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Restructuring expenses $ 406 $ 84 $ 808 $ 157
Fiscal 2026 Oracle Restructuring [Member]        
Restructuring Cost and Reserve [Line Items]        
Total estimated restructuring costs [1] 1,614   1,614  
Restructuring expenses 411   826  
Fiscal 2026 Oracle Restructuring [Member] | Maximum        
Restructuring Cost and Reserve [Line Items]        
Total estimated restructuring costs $ 1,600   $ 1,600  
[1] Restructuring costs recorded to each of the operating segments presented primarily related to employee severance costs. Other restructuring costs represented employee severance costs not related to our operating segments and certain other restructuring plan costs.