Income Taxes - Schedule of Tax Carryforwards and Operating Loss Carryforwards (Details) $ in Millions	Aug. 31, 2025 USD ($)
Domestic – federal
Operating Loss Carryforwards [Line Items]
Income tax net operating loss carryforwards	$ 169
Tax credit carryforwards	18
Domestic – federal | Tax capital loss carryforwards:
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	127
Domestic – state
Operating Loss Carryforwards [Line Items]
Income tax net operating loss carryforwards	60
Tax credit carryforwards	4
Foreign
Operating Loss Carryforwards [Line Items]
Income tax net operating loss carryforwards	680
Tax credit carryforwards	$ 5