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ACQUISITIONS Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jun. 08, 2022
Jan. 19, 2022
May 31, 2023
May 31, 2022
May 31, 2021
Business Acquisition [Line Items]          
Total revenues     $ 49,954 $ 42,440 $ 40,479
Fair values of restricted stock-based awards and stock options assumed     55 $ 0 $ 0
Cerner Corporation [Member]          
Business Acquisition [Line Items]          
Merger agreement date   Jan. 19, 2022      
Total revenues     5,900    
Total preliminary purchase price $ 28,225        
Preliminary purchase price, in cash 28,200        
Fair values of restricted stock-based awards and stock options assumed 55        
Business combination, senior notes and other borrowings assumed $ 1,600        
Business combination, assumed senior notes and other borrowings, repaid     $ 1,600    
Common Stock [Member] | Cerner Corporation [Member]          
Business Acquisition [Line Items]          
Tender offer purchase share price   $ 95.00