Concentration of Risk and Segment Data - Schedule of Segment Income and Reconciliation of Income Before Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	$ 1,182	$ 2,013	$ 1,537
Reconciling items:
Amortization of intangibles	(62)	(40)	(33)
Stock-based compensation expense and related charges	(107)	(89)	(95)
Restructuring, severance and related charges	(181)	(296)	(57)
(Loss) gain from the divestiture of businesses	(53)	942	0
Acquisition and divestiture related charges	(20)	(70)	0
Loss on securities	(46)	0	0
Interest expense, net	(147)	(173)	(206)
Income before income tax	892	1,751	1,262
Disposed of Sale | Divested Operations in Italy | Jabil Circuit Italia S.r.l (JCI)
Reconciling items:
(Loss) gain from the divestiture of businesses	(97)
Held for Sale | Product Manufacturing Business
Reconciling items:
(Loss) gain from the divestiture of businesses	54	942
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	1,620	1,588	1,733
Segment Reconciling Items
Reconciling items:
Amortization of intangibles	(62)	(40)	(33)
Stock-based compensation expense and related charges	(107)	(89)	(95)
Restructuring, severance and related charges	(181)	(296)	(57)
Business interruption and impairment charges, net	(8)	(16)	0
(Loss) gain from the divestiture of businesses	(53)	942	0
Acquisition and divestiture related charges	(20)	(70)	0
Loss on securities	(46)	0	0
Other expense (net of periodic benefit cost)	(104)	(95)	(80)
Interest expense, net	$ (147)	$ (173)	$ (206)