Acquisitions and other Investments - schedule of purchase price allocation and identifiable assets acquired and liabilities assumed - Summit (Details) - USD ($) $ in Millions	Jan. 03, 2023	Feb. 29, 2024	Aug. 31, 2023
Identifiable assets acquired and liabilities assumed:
Goodwill		$ 15,814	$ 28,187
Summit Heath-CityMD
Purchase price allocation
Cash consideration	$ 4,778
Deferred consideration	100
Summit debt paid at closing	1,963
Fair value of equity consideration	1,971
Fair value of non-controlling interests	13
Total	8,825
Identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	69
Accounts receivable, net	381
Property, plant and equipment	607
Intangible assets	3,359
Operating lease right-of-use assets	756
Other assets	174
Operating lease obligations	(773)
Deferred tax liability	(735)
Other liabilities	(466)
Total identifiable net assets	3,372
Goodwill	$ 5,454