Segment Information - Schedule of Revenue from External Customers by Products and Services (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue from External Customer [Line Items]
Total revenues	$ 860.8	$ 800.9	$ 717.8
Medical
Revenue from External Customer [Line Items]
Total revenues	299.7	284.5	271.7
Nuclear & Safety
Revenue from External Customer [Line Items]
Total revenues	561.1	516.4	446.1
Cancer care | Medical
Revenue from External Customer [Line Items]
Total revenues	228.1	215.9	206.0
Other | Medical
Revenue from External Customer [Line Items]
Total revenues	71.6	68.6	65.8
Nuclear | Nuclear & Safety
Revenue from External Customer [Line Items]
Total revenues	316.6	291.8	254.2
Labs and research | Nuclear & Safety
Revenue from External Customer [Line Items]
Total revenues	131.7	122.9	103.1
Other | Nuclear & Safety
Revenue from External Customer [Line Items]
Total revenues	$ 112.8	$ 101.7	$ 88.7