v3.26.1
REVENUE - Schedule of Total Revenue by Type and by U.S versus Rest of World (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Total revenue $ 190.7 $ 213.1 $ 391.1 $ 409.0
U.S.        
Disaggregation of Revenue [Line Items]        
Total revenue 177.5 198.2 364.5 379.8
RoW        
Disaggregation of Revenue [Line Items]        
Total revenue 13.2 14.9 26.6 29.2
Cancer Care Continuum        
Disaggregation of Revenue [Line Items]        
Total revenue 114.1 127.7 234.3 243.3
Cancer Care Continuum | U.S.        
Disaggregation of Revenue [Line Items]        
Total revenue 100.9 112.9 207.7 214.3
Cancer Care Continuum | RoW        
Disaggregation of Revenue [Line Items]        
Total revenue 13.2 14.8 26.6 29.0
Prenatal Health        
Disaggregation of Revenue [Line Items]        
Total revenue 39.8 47.6 81.7 96.9
Prenatal Health | U.S.        
Disaggregation of Revenue [Line Items]        
Total revenue 39.8 47.5 81.7 96.7
Prenatal Health | RoW        
Disaggregation of Revenue [Line Items]        
Total revenue 0.0 0.1 0.0 0.2
Mental Health        
Disaggregation of Revenue [Line Items]        
Total revenue 36.8 37.8 75.1 68.8
Mental Health | U.S.        
Disaggregation of Revenue [Line Items]        
Total revenue 36.8 37.8 75.1 68.8
Mental Health | RoW        
Disaggregation of Revenue [Line Items]        
Total revenue $ 0.0 $ 0.0 $ 0.0 $ 0.0