REVENUES (Tables)

9 Months Ended

Sep. 30, 2025

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue [Table Text Block]

The Company’s Revenues by segment and by payers/customer groups were as follows:

	Three Months Ended September 30, 2025								Three Months Ended September 30, 2024
	North America		Europe		Other		Total		North America		Europe		Other		Total
Payer/Customer
Dx
Clients	23	%	—	%	—	%	23	%	24	%	—	%	—	%	24	%
Patients	10	%	—	%	—	%	10	%	10	%	—	%	—	%	10	%
Medicare and Medicaid	8	%	—	%	—	%	8	%	8	%	—	%	—	%	8	%
Third party	37	%	—	%	—	%	37	%	36	%	—	%	—	%	36	%
Total Dx revenues by payer	78	%	—	%	—	%	78	%	78	%	—	%	—	%	78	%
BLS
Pharmaceutical, biotechnology, and medical device companies	9	%	9	%	4	%	22	%	9	%	9	%	4	%	22	%
Total Revenues	87	%	9	%	4	%	100	%	87	%	9	%	4	%	100	%
	Nine Months Ended September 30, 2025								Nine Months Ended September 30, 2024
	North America		Europe		Other		Total		North America		Europe		Other		Total
Payer/Customer
Dx
Clients	24	%	—	%	—	%	24	%	24	%	—	%	—	%	24	%
Patients	10	%	—	%	—	%	10	%	10	%	—	%	—	%	10	%
Medicare and Medicaid	8	%	—	%	—	%	8	%	8	%	—	%	—	%	8	%
Third party	36	%	—	%	—	%	36	%	36	%	—	%	—	%	36	%
Total Dx revenues by payer	78	%	—	%	—	%	78	%	78	%	—	%	—	%	78	%
BLS
Pharmaceutical, biotechnology, and medical device companies	9	%	9	%	4	%	22	%	9	%	9	%	4	%	22	%
Total Revenues	87	%	9	%	4	%	100	%	87	%	9	%	4	%	100	%

Contract with Customer, Asset and Liability [Table Text Block]

The following table provides information about accounts receivable, unbilled services, and unearned revenue from contracts with customers:

	September 30, 2025		December 31, 2024
Dx accounts receivable	$	1,398.8	$	1,259.3
BLS accounts receivable	747.0		729.5
Less: BLS allowance for credit losses	(36.7)		(44.7)
Accounts receivable, net	$	2,109.1	$	1,944.1
Gross unbilled services	$	162.8	$	160.5
Less: reserve for unbilled services	(6.7)		(7.6)
Unbilled services, net	$	156.1	$	152.9

Financing Receivable, Allowance for Credit Loss [Table Text Block]

The rollforward for the allowance for credit losses was as follows:

	Accounts Receivable, net		Unbilled Services, net		Total
Allowance for credit losses at December 31, 2024	$	44.7	$	7.6	$	52.3
Credit loss expense	1.1		—		1.1
Write offs	(10.8)		(1.2)		(12.0)
Foreign currency impact	1.7		0.3		2.0
Allowance for credit losses at September 30, 2025	$	36.7	$	6.7	$	43.4