Acquisitions and other Investments - schedule of purchase price allocation and identifiable assets acquired and liabilities assumed - Village MD (Details) - USD ($) $ in Millions	Nov. 24, 2021	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Identifiable assets acquired and liabilities assumed:
Goodwill		$ 28,187	$ 22,280	$ 12,421
VillageMD
Purchase price allocation:
Total purchase price	$ 5,200
Less: purchase price for issuance of new preferred units at fair value	(2,300)
Net consideration	2,900
Fair value of equity consideration	683
Fair value of previously held equity and debt	3,211
Fair value of non-controlling interest	3,257
Total	10,051
Identifiable assets acquired and liabilities assumed:
Tangible assets	634
Intangible assets	1,621
Liabilities	(370)
Total identifiable net assets	1,885
Goodwill	$ 8,166