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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
yr
segement
Dec. 31, 2024
USD ($)
Dec. 31, 2023
Dec. 31, 2025
CAD ($)
Dec. 31, 2024
CAD ($)
Disaggregation of Revenue [Line Items]          
Percent of Revenue Contributed 100.00% 100.00% 100.00%    
Number of Reportable Segments | segement 2        
Cash, Uninsured Amount $ 529.9 $ 1,516.0      
Accounts receivable balances (gross) from Medicare and Medicaid $ 126.1 $ 97.4      
Accounts receivable from Ontario government sponsored healthcare plan       $ 5.8 $ 6.4
Percent of gross accounts receivable due from patients 22.60% 24.50%   22.60% 24.50%
Inventory, Supplies, Net of Reserves $ 386.2 $ 384.2      
Inventory, Finished Goods, Net of Reserves 148.5 109.0      
Inventory Valuation Reserves $ 26.7 43.8      
Estimated useful life of capitalized software minimum (in years) | yr 3        
Estimated useful life of capitalized software maximum (in years) | yr 15        
Estimated useful life of capitalized software costs (in years) | yr 5        
Ownership percentage below which investments are generally accounted for on the cost method (in hundredths) 20.00%        
Investments $ 201.9 $ 199.7      
Minimum threshold percentage required to recognize income tax benefit (in hundredths) 50.00%     50.00%  
DeferredTaxAssetAccelerationOverNextTwoYears $ 194.7        
Diagnostics [Member]          
Disaggregation of Revenue [Line Items]          
Percent of Revenue Contributed 78.00% 78.00% 77.00%    
Biopharma Laboratory Services          
Disaggregation of Revenue [Line Items]          
Percent of Revenue Contributed 22.00% 22.00% 23.00%