Segment Information - Schedule of Capital Expenditures and Depreciation and Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Capital expenditures	$ 39.6	$ 48.8	$ 40.8
Depreciation and amortization	138.1	150.4	162.8
Operating Segments
Segment Reporting Information [Line Items]
Capital expenditures	38.9	45.5	39.8
Depreciation and amortization	137.1	149.7	162.1
Operating Segments | Medical
Segment Reporting Information [Line Items]
Capital expenditures	20.2	27.8	21.8
Depreciation and amortization	65.5	73.0	75.2
Operating Segments | Nuclear & Safety
Segment Reporting Information [Line Items]
Capital expenditures	18.7	17.7	18.0
Depreciation and amortization	71.6	76.7	86.9
Corporate and other
Segment Reporting Information [Line Items]
Capital expenditures	0.7	3.3	1.0
Depreciation and amortization	$ 1.0	$ 0.7	$ 0.7