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Discontinued Operations - Results of Discontinued Operations (Details) - Discontinued Operations, Held-for-sale - Superform Aluminum Superplastic - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2025	Mar. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 1.5	$ 1.5
Cost of goods sold	(1.4)	(1.1)
Gross profit	0.1	0.4
Selling, general and administrative expenses	(0.4)	(0.4)
Restructuring charges	0.3	(0.1)
Operating loss	0.0	(0.1)
Tax credit	0.0	0.0
Net loss	$ 0.0	$ (0.1)

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