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Pension and Postretirement Health and Life Benefits (Details) - Customer A [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Low Enriched Uranium Segment [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Revenue	$ 47.6	$ 18.9
Technical Solutions Segment [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Revenue	$ 21.7	$ 19.8

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