REPORTABLE SEGMENTS AND RELATED INFORMATION - Summary of Concentration of Risk by Total Consolidated Revenues (Details) - Consolidated revenues	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Product concentration risk | Motor Vehicle Driver History Record Retrieval
Concentration Risk [Line Items]
Concentration risk percentage	26.00%	29.00%	31.00%
Product concentration risk | Motor Vehicle Registrations
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	14.00%	14.00%
Customer concentration risk | Colorado State Partner
Concentration Risk [Line Items]
Concentration risk percentage	10.00%
Customer concentration risk | Texas NICUSA, LLC
Concentration Risk [Line Items]
Concentration risk percentage		17.00%	20.00%
Customer concentration risk | LexisNexis Risk Solutions
Concentration Risk [Line Items]
Concentration risk percentage	15.00%	19.00%	19.00%