Concentration of Risk and Segment Data - Segment Assets (Details) - USD ($) $ in Millions	Aug. 31, 2023	Aug. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 19,424	$ 19,717
Assets held for sale	1,929	0
Operating Segments | EMS
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	4,859	5,402
Operating Segments | DMS
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	6,802	8,881
Assets held for sale and Other non-allocated assets
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	5,834	5,434
Segment Reconciling Items | Held for sale
Segment Reporting, Asset Reconciling Item [Line Items]
Assets held for sale	$ 1,929	$ 0