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Goodwill and Other Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 25, 2022
--- | --- | ---
Acquired finite-lived intangible assets: |  |
Gross Value | $ 188.3 | $ 174.3
Accumulated Amortization | (132.8) | (126.0)
Total | 55.5 | 48.3
Total intangible assets, Gross Value | 195.2 | 181.2
Total intangible assets, Net Value | 62.4 | 55.2
Trade names |  |
Acquired finite-lived intangible assets: |  |
Indefinite-lived trade names | 6.9 | 6.9
Customer relationships |  |
Acquired finite-lived intangible assets: |  |
Gross Value | 80.9 | 80.9
Accumulated Amortization | (62.8) | (60.1)
Total | 18.1 | 20.8
Contracts and backlog |  |
Acquired finite-lived intangible assets: |  |
Gross Value | 53.1 | 39.1
Accumulated Amortization | (38.8) | (36.3)
Total | 14.3 | 2.8
Developed technology and technical know-how |  |
Acquired finite-lived intangible assets: |  |
Gross Value | 33.7 | 33.7
Accumulated Amortization | (28.2) | (27.0)
Total | 5.5 | 6.7
Trade names |  |
Acquired finite-lived intangible assets: |  |
Gross Value | 3.8 | 3.8
Accumulated Amortization | (2.7) | (2.3)
Total | 1.1 | 1.5
In-process research and development |  |
Acquired finite-lived intangible assets: |  |
Gross Value | 16.8 | 16.8
Accumulated Amortization | (0.3) | (0.3)
Total | $ 16.5 | $ 16.5

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