Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Narrative (Details)

v3.23.3
Goodwill and Intangible Assets - Narrative (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
May 31, 2022
USD ($)
customer
Oct. 31, 2021
USD ($)
Goodwill [Line Items]              
Goodwill $ 1,414,600,000   $ 1,414,600,000   $ 1,418,000,000    
Number of customer termination of contract | customer           1  
Goodwill, impaired, accumulated impairment loss 211,800,000 $ 55,200,000 211,800,000 $ 55,200,000 $ 211,800,000    
Goodwill impairment $ 0 0 $ 0 55,200,000      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01              
Goodwill [Line Items]              
Revenue from remaining performance obligation (as a percent) 23.00%   23.00%        
Revenue, remaining performance obligation, expected timing of satisfaction, period 3 months   3 months        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01              
Goodwill [Line Items]              
Revenue from remaining performance obligation (as a percent) 36.00%   36.00%        
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year   1 year        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01              
Goodwill [Line Items]              
Revenue from remaining performance obligation (as a percent) 17.00%   17.00%        
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year   1 year        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01              
Goodwill [Line Items]              
Revenue from remaining performance obligation (as a percent) 10.00%   10.00%        
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year   1 year        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01              
Goodwill [Line Items]              
Revenue, remaining performance obligation, amount           $ 67,000,000  
Revenue from remaining performance obligation (as a percent)           80.00%  
Revenue, remaining performance obligation, expected timing of satisfaction, period           5 years  
Radiation Monitoring Systems              
Goodwill [Line Items]              
Goodwill   $ 165,100,000   $ 165,100,000     $ 257,200,000
Reporting unit, percentage of terminal future cash flows growth rate           3.50%  
Radiation Monitoring Systems | Maximum              
Goodwill [Line Items]              
Reporting unit, percentage of discount rate           10.50%  
Radiation Monitoring Systems | Minimum              
Goodwill [Line Items]              
Reporting unit, percentage of discount rate           9.00%