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Equity method investments (Tables)
 9 Months Ended
May 31, 2023
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Equity Method Investments Equity method investments were as follows (in millions, except percentages):
 May 31, 2023August 31, 2022
 Carrying valueOwnership percentageCarrying valueOwnership percentage
AmerisourceBergen$2,598 17%$3,916 25%
Others928 
8% - 50%
1,579 
8% - 50%
Total$3,527  $5,495