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Credit Losses - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Nov. 30, 2023
Nov. 30, 2022
May 31, 2023
Credit Loss [Abstract]          
Credit losses $ 113 $ 180 $ 216 $ 425  
Allowance for credit losses $ 426   $ 426   $ 472