Corporate Expense Allocation (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Corporate Expense Allocations [Line Items]
Corporate expense allocation	$ 3	$ 4
Minimum
Corporate Expense Allocations [Line Items]
Estimated corporate expenses on standalone basis	17
Maximum
Corporate Expense Allocations [Line Items]
Estimated corporate expenses on standalone basis	22
Treasure Holdco, Inc.
Corporate Expense Allocations [Line Items]
Corporate expense allocation	$ 3	$ 4