Income Taxes - Summary of U.S. and Foreign Components of Income before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2025	Dec. 27, 2024	Dec. 29, 2023
Income Tax Disclosure [Abstract]
United States	$ (175.2)	$ (106.4)	$ (133.5)
Foreign	29.5	173.6	122.2
Income (loss) before provision for income taxes	$ (145.7)	$ 67.2	$ (11.3)