REVENUE (Tables)

3 Months Ended

Mar. 31, 2023

Disaggregation of Revenue [Line Items]

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

The rollforward for the allowance for credit losses for the three months ended March 31, 2023, is as follows:

	Accounts Receivable		Unbilled Services		Note and Other Receivables		Total
Balance as of December 31, 2022	$	43.5	$	10.5	$	0.7	$	54.7
Plus, credit loss expense	11.1		—		—		11.1
Less, write offs	(1.8)		0.3		—		(1.5)
Balance as of March 31, 2023	$	52.8	$	10.8	$	0.7	$	64.3

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

	March 31, 2023		December 31, 2022
Dx accounts receivable	$	1,131.6	$	1,046.9
DD accounts receivable	1,266.0		1,218.6
Less DD allowance for doubtful accounts	(52.8)		(43.5)
Accounts receivable	$	2,344.8	$	2,222.0
Gross unbilled services	$	715.9	$	805.9
Less reserve for unbilled services	(10.8)		(10.5)
Unbilled services	$	705.1	$	795.4
Unearned revenue	$	586.7	$	582.1

Disaggregation of Revenue [Table Text Block]

The Company's revenues by segment and by payers/customer groups for the three months ended March 31, 2023, and 2022, were as follows:

	For the Three Months Ended March 31, 2023								For the Three Months Ended March 31, 2022
	North America		Europe		Other		Total		North America		Europe		Other		Total
Payer/Customer
Dx
Clients	17	%	—	%	—	%	17	%	17	%	—	%	—	%	17	%
Patients	8	%	—	%	—	%	8	%	5	%	—	%	—	%	5	%
Medicare and Medicaid	7	%	—	%	—	%	7	%	6	%	—	%	—	%	6	%
Third party	31	%	—	%	—	%	31	%	35	%	—	%	—	%	35	%
Total Dx revenues by payer	63	%	—	%	—	%	63	%	63	%	—	%	—	%	63	%
DD
Pharmaceutical, biotechnology and medical device companies	18	%	12	%	7	%	37	%	17	%	13	%	7	%	37	%
Total revenues	81	%	12	%	7	%	100	%	80	%	13	%	7	%	100	%

Revenues in the U.S. were $2,959.2 (78.3%) and $3,000.5 (76.9%) for the three months ended March 31, 2023, and 2022, respectively.

DD Contract costs

Capitalized Contract Cost [Table Text Block]

	March 31, 2023		December 31, 2022
Sales commission assets	$	38.3	$	38.2
Deferred contract fulfillment costs	14.3		15.0
Total	$	52.6	$	53.2