Business Segments (Details3) - USD ($) $ in Millions	Jun. 29, 2025	Dec. 29, 2024
Segment Reporting Asset Reconciling Item [Line Items]
Assets	$ 5,021.0	$ 5,230.6
Corporate:
Segment Reporting Asset Reconciling Item [Line Items]
Deferred Taxes	41.7	46.5
Cash and cash equivalents and other	357.8	750.4
HPMC
Segment Reporting Asset Reconciling Item [Line Items]
Assets	2,368.3	2,225.9
AA&S
Segment Reporting Asset Reconciling Item [Line Items]
Assets	$ 2,253.2	$ 2,207.8