v3.26.1
Goodwill and Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]  
Schedule of Goodwill
The following table shows changes in the carrying amount of goodwill by reportable segment as of June 30, 2026 and December 31, 2025 (in millions):
Nuclear & SafetyMedicalConsolidated
Balance—December 31, 2025$1,238.4 $634.0 $1,872.4 
Measurement period adjustments1.4 — 1.4 
Translation adjustment(12.1)— (12.1)
Balance—June 30, 2026$1,227.7 $634.0 $1,861.7 
Gross carrying amounts and cumulative goodwill impairment losses are as follows (in millions):
June 30, 2026December 31, 2025
Gross Carrying AmountCumulative ImpairmentGross Carrying AmountCumulative Impairment
Goodwill$2,073.5 $(211.8)$2,084.2 $(211.8)
Schedule of Intangible Asset, Finite-Lived A summary of intangible assets useful lives, gross carrying value and related accumulated amortization is below (in millions):
June 30, 2026
Original Average
 Life in Years		Gross Carrying
 Amount		Accumulated
 Amortization		Net Book
 Value
Customer relationships
6 - 13
$525.3 $(265.8)$259.5 
Distributor relationships
7 - 13
61.0 (34.1)26.9 
Developed technology
5 - 16
341.9 (161.0)180.9 
Trade names
3 - 10
114.8 (48.4)66.4 
Remaining performance obligations and other
1 - 4
15.2 (3.4)11.8 
Total$1,058.2 $(512.7)$545.5 
December 31, 2025
Original Average
 Life in Years		Gross Carrying
 Amount		Accumulated
 Amortization 		Net Book
 Value
Customer relationships
6 - 13
$524.6 $(240.5)$284.1 
Distributor relationships
7 - 13
61.2 (30.6)30.6 
Developed technology
5 - 16
345.0 (140.1)204.9 
Trade names
3 - 10
115.8 (43.1)72.7 
Remaining performance obligations and other
1 - 4
15.1 (1.1)14.0 
Total$1,061.7 $(455.4)$606.3 
Schedule of Finite-lived Intangible Assets Amortization Expense
Aggregate amortization expense for intangible assets included in cost of revenues and operating expenses was as follows (in millions):
Three Months Ended June 30, 2026Three Months Ended June 30, 2025Six Months Ended June 30, 2026Six Months Ended June 30, 2025
Amortization expense for intangible assets in:
Cost of revenues$7.0 $6.9 $13.9 $13.7 
Operating expenses$23.0 $18.3 $47.1 $36.9 
Schedule of Estimated Future Amortization of Intangible Assets
Estimated future amortization of intangible assets is as follows (in millions):
Remainder of 2026$57.6 
Year ending December 31:
2027103.5 
202886.1 
202969.9 
203062.0 
Thereafter166.4 
Total$545.5