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Business Segments (Details2) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 29, 2024 | Dec. 31, 2023 | Jan. 01, 2023
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |
Depreciation and amortization | $ 151.5 | $ 146.1 | $ 142.9
Capital expenditures | 239.1 | 200.7 | 130.9
Operating Segments |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |
Depreciation and amortization | 151.5 | 146.1 | 142.9
Capital expenditures | 239.1 | 200.7 | 130.9
Operating Segments | HPMC |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |
Depreciation and amortization | 71.6 | 71.1 | 68.3
Capital expenditures | 132.0 | 100.4 | 33.3
Operating Segments | AA&S |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |
Depreciation and amortization | 73.2 | 67.9 | 67.4
Capital expenditures | 103.6 | 97.2 | 89.6
Operating Segments | Corporate [Member] |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |
Depreciation and amortization | 6.7 | 7.1 | 7.2
Capital expenditures | $ 3.5 | $ 3.1 | $ 8.0

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