Concentration of Risk and Segment Data (Revenues Disaggregated by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Disaggregation of Revenue [Line Items]
Net revenue	$ 29,285	$ 27,266	$ 25,282
Point in time
Disaggregation of Revenue [Line Items]
Net revenue	11,647	10,431	8,933
Over time
Disaggregation of Revenue [Line Items]
Net revenue	17,638	16,835	16,349
EMS
Disaggregation of Revenue [Line Items]
Net revenue	13,904	14,093	12,967
EMS | Point in time
Disaggregation of Revenue [Line Items]
Net revenue	4,464	4,363	2,832
EMS | Over time
Disaggregation of Revenue [Line Items]
Net revenue	9,440	9,730	10,135
DMS
Disaggregation of Revenue [Line Items]
Net revenue	15,381	13,173	12,315
DMS | Point in time
Disaggregation of Revenue [Line Items]
Net revenue	7,183	6,068	6,101
DMS | Over time
Disaggregation of Revenue [Line Items]
Net revenue	$ 8,198	$ 7,105	$ 6,214