Income Taxes (Details)	3 Months Ended	12 Months Ended			15 Months Ended
	Jun. 29, 2025	Sep. 26, 2027	Sep. 27, 2026	Sep. 28, 2025	Sep. 27, 2026
Income Taxes
Effective income tax rate (benefit)	10.00%
Forecast
Income Taxes
Effective income tax rate (benefit)				11.00%
Forecast | FDII Effective Tax Rate
Income Taxes
Effective income tax rate (benefit)				13.00%
Forecast | FDII Effective Tax Future Rate
Income Taxes
Effective income tax rate (benefit)		16.00%
Forecast | FDDEI Effective Tax Rate | Subsequent Event
Income Taxes
Effective income tax rate (benefit)		14.00%		21.00%	13.00%
Forecast | Corporate alternative minimum tax | Subsequent Event
Income Taxes
Effective income tax rate (benefit)			15.00%