Goodwill and Other Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Millions	Dec. 29, 2024	Dec. 31, 2023
Acquired finite-lived intangible assets:
Gross Value	$ 188.3	$ 188.3
Accumulated Amortization	(141.4)	(132.8)
Total	46.9	55.5
Total intangible assets, gross value	195.2	195.2
Total intangible assets, net value	53.8	62.4
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	(65.3)	(62.8)
Total	15.6	18.1
Contracts and backlog
Acquired finite-lived intangible assets:
Gross Value	53.1	53.1
Accumulated Amortization	(43.2)	(38.8)
Total	9.9	14.3
Developed technology and technical know-how
Acquired finite-lived intangible assets:
Gross Value	33.7	33.7
Accumulated Amortization	(29.4)	(28.2)
Total	4.3	5.5
Trade names
Acquired finite-lived intangible assets:
Gross Value	3.8	3.8
Accumulated Amortization	(3.1)	(2.7)
Total	0.7	1.1
In-process research and development
Acquired finite-lived intangible assets:
Gross Value	16.8	16.8
Accumulated Amortization	(0.4)	(0.3)
Total	$ 16.4	$ 16.5