Fair Value - Schedule of Fair Value, Assets and Liabilities Measured (Details) - USD ($) $ in Millions	Mar. 27, 2026	Dec. 26, 2025
Plan assets
Other non-current assets:
Assets	$ 0.3	$ 0.7
Pension obligation
Other liabilities:
Liabilities	2.4	2.3
Quoted Prices in Active Markets for Identical Assets (Level 1) | Plan assets
Other non-current assets:
Assets	0.0	0.0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension obligation
Other liabilities:
Liabilities	0.0	0.0
Significant Other Observable Inputs (Level 2) | Plan assets
Other non-current assets:
Assets	0.0	0.0
Significant Other Observable Inputs (Level 2) | Pension obligation
Other liabilities:
Liabilities	0.0	0.0
Significant Unobservable Inputs (Level 3) | Plan assets
Other non-current assets:
Assets	0.3	0.7
Significant Unobservable Inputs (Level 3) | Pension obligation
Other liabilities:
Liabilities	$ 2.4	$ 2.3