Segment Reporting - Reportable Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023
Segment Reporting Information [Line Items]
Total Revenues	$ 16,466,828	$ 16,564,585	$ 48,490,645	$ 48,126,545
Total Operating Income	2,630,865	2,359,288	7,242,179	6,896,969
Consulting
Segment Reporting Information [Line Items]
Total Revenues	8,457,169	8,693,030	24,934,709	25,416,160
Managed Services
Segment Reporting Information [Line Items]
Total Revenues	8,009,659	7,871,555	23,555,936	22,710,385
Communications, Media & Technology
Segment Reporting Information [Line Items]
Total Revenues	2,763,076	2,880,187	8,086,661	8,745,192
Financial Services
Segment Reporting Information [Line Items]
Total Revenues	2,894,753	3,138,181	8,737,261	9,104,444
Health & Public Service
Segment Reporting Information [Line Items]
Total Revenues	3,515,264	3,266,347	10,226,769	9,289,961
Products
Segment Reporting Information [Line Items]
Total Revenues	4,983,422	4,968,399	14,605,247	14,352,759
Resources
Segment Reporting Information [Line Items]
Total Revenues	2,310,313	2,311,471	6,834,707	6,634,189
North America
Segment Reporting Information [Line Items]
Total Revenues	7,834,206	7,720,903	22,773,920	22,741,597
Total Operating Income	1,365,072	1,241,245	3,682,156	3,374,986
EMEA
Segment Reporting Information [Line Items]
Total Revenues	5,776,624	5,872,107	17,179,116	16,739,688
Total Operating Income	749,859	670,330	2,102,472	2,012,616
Growth Markets
Segment Reporting Information [Line Items]
Total Revenues	2,855,998	2,971,575	8,537,609	8,645,260
Total Operating Income	$ 515,934	$ 447,713	$ 1,457,551	$ 1,509,367