Business Segments (Details4) - USD ($) $ in Millions	Jun. 29, 2025	Dec. 29, 2024
Long-Lived Assets [Line Items]
Assets	$ 5,021.0	$ 5,230.6
Percent of total	100.00%	100.00%
UNITED STATES
Long-Lived Assets [Line Items]
Assets	$ 4,493.3	$ 4,666.3
Percent of total	89.00%	89.00%
China
Long-Lived Assets [Line Items]
Assets	$ 293.5	$ 310.3
Percent of total	6.00%	6.00%
Other
Long-Lived Assets [Line Items]
Assets	$ 234.2	$ 254.0
Percent of total	5.00%	5.00%