Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	Dec. 28, 2025	Dec. 29, 2024
Goodwill [Line Items]
Gross value	$ 849.0	$ 822.2
Less accumulated impairment	253.3	253.3
Net	595.7	568.9
US
Goodwill [Line Items]
Gross value	138.6	138.6
Less accumulated impairment	13.8	13.8
Net	124.8	124.8
KGS
Goodwill [Line Items]
Gross value	710.4	683.6
Less accumulated impairment	239.5	239.5
Net	$ 470.9	$ 444.1