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Subsequent Events (Details) - USD ($) $ in Millions	Oct. 31, 2023	Sep. 30, 2023
Global Workforce Reduction \| Employee Severance
Subsequent Event [Line Items]
Restructuring accrual		$ 0
Subsequent Event \| Group Of Creditors
Subsequent Event [Line Items]
Outstanding obligations	$ 7,000
Subsequent Event \| Financing Through Issuance Of New Long-Term Debt \| Group Of Creditors
Subsequent Event [Line Items]
Commitment	1,200
Subsequent Event \| Global Workforce Reduction \| Employee Severance \| Maximum
Subsequent Event [Line Items]
Expected cost to be incurred	25
Subsequent Event \| Global Workforce Reduction \| Employee Severance \| Minimum
Subsequent Event [Line Items]
Expected cost to be incurred	$ 15