REVENUE (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The Company's revenue by segment payers/customer groups for the years ended December 31, 2021, 2020 and 2019 is as follows:

	Year Ended December 31, 2021								For the Year Ended December 31, 2020								For the Year Ended December 31, 2019
	North America		Europe		Other		Total		North America		Europe		Other		Total		North America		Europe		Other		Total
Payer/Customer
Dx
Clients	17	%	—	%	—	%	17	%	20	%	—	%	—	%	20	%	17	%	—	%	—	%	17	%
Patients	6	%	—	%	—	%	6	%	6	%	—	%	—	%	6	%	8	%	—	%	—	%	8	%
Medicare and Medicaid	7	%	—	%	—	%	7	%	7	%	—	%	—	%	7	%	8	%	—	%	—	%	8	%
Third party	34	%	—	%	—	%	34	%	32	%	—	%	—	%	32	%	27	%	—	%	—	%	27	%
Total Dx revenues by payer	64	%	—	%	—	%	64	%	65	%	—	%	—	%	65	%	60	%	—	%	—	%	60	%
DD
Pharmaceutical, biotechnology and medical device companies	17	%	13	%	6	%	36	%	17	%	11	%	7	%	35	%	21	%	12	%	7	%	40	%
Total revenues	81	%	13	%	6	%	100	%	82	%	11	%	7	%	100	%	81	%	12	%	7	%	100	%

Capitalized Contract Cost

	December 31, 2021		December 31, 2020
Sales commission assets	$	36.2	$	32.6
Deferred contract fulfillment costs	14.4		12.6
Total	$	50.6	$	45.2

Contract with Customer, Contract Asset, Contract Liability, and Receivable

	December 31, 2021		December 31, 2020
Dx accounts receivable	$	1,193.8	$	1,515.5
DD accounts receivable	1,089.2		986.4
Less DD allowance for doubtful accounts	(21.5)		(22.1)
Accounts receivable	$	2,261.5	$	2,479.8
Gross unbilled services	$	730.8	$	548.1
Less reserve for unbilled services	(14.0)		(11.3)
Unbilled services	$	716.8	$	536.8
Unearned revenue	$	558.5	$	506.5