Derivative Financial Instruments and Hedging Activities - Schedule of Maturity Date and Aggregate Notional Amount Outstanding of Net Investment Hedges (Details) - Net investment hedges - Forward contracts - Designated as hedging instruments - USD ($) $ in Millions	Feb. 28, 2026	Aug. 31, 2025
October 2025
Derivative [Line Items]
Derivative, notional amount	$ 0	$ 103
January 2026
Derivative [Line Items]
Derivative, notional amount	0	200
April 2026
Derivative [Line Items]
Derivative, notional amount	44	42
July 2026
Derivative [Line Items]
Derivative, notional amount	166	45
October 2026
Derivative [Line Items]
Derivative, notional amount	59	0
July 2027
Derivative [Line Items]
Derivative, notional amount	117	0
Forward foreign exchange contracts
Derivative [Line Items]
Derivative, notional amount	$ 386	$ 390