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BASIS OF PRESENTATION, RECENT ACCOUNTING PRONOUNCEMENTS AND OTHER Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Nov. 30, 2025
Nov. 30, 2024
Nov. 30, 2025
Nov. 30, 2024
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Basic earnings per share $ 2.14 $ 1.13 $ 3.19 $ 2.19
Diluted earnings per share $ 2.1 $ 1.1 $ 3.11 $ 2.13
Contract with Customer, Asset and Liability [Abstract]        
Revenues recognized included in opening deferred revenues balances     $ 7,000 $ 6,900
Revenue, Performance Obligation [Abstract]        
Remaining performance obligation, amount $ 523,300   523,300  
Sales of Financing Receivables [Abstract]        
Sales of financing receivables $ 307 $ 266 $ 1,100 $ 861