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Supplemental Cash Flow Information - Supplemental Cash Flow (Details) - USD ($)
$ in Millions
6 Months Ended
Nov. 30, 2022
Nov. 30, 2021
Supplemental Cash Flow Information [Abstract]    
Interest (net of capitalized interest) $ 333 $ 330
Income taxes 638 474
Income tax refunds received (48) (177)
Cash tax payments, net $ 590 $ 297