    <SEC-DOCUMENT>0000950170-24-023541-index.html : 20240301
    <SEC-HEADER>0000950170-24-023541.hdr.sgml : 20240301
    <ACCEPTANCE-DATETIME>20240301080420
    ACCESSION NUMBER:		0000950170-24-023541
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		17
    CONFORMED PERIOD OF REPORT:	20240228
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20240301
    DATE AS OF CHANGE:		20240301

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST ADVANTAGE CORP
    		CENTRAL INDEX KEY:			0001210677
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
    		ORGANIZATION NAME:           	07 Trade & Services
    		IRS NUMBER:				843884690
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-31666
    		FILM NUMBER:		24707033

    	BUSINESS ADDRESS:
    		STREET 1:		1 CONCOURSE PARKWAY NE, SUITE 200
    		STREET 2:		ATTN: BRET T. JARDINE, ESQ.
    		CITY:			ATLANTA
    		STATE:			GA
    		ZIP:			30328
    		BUSINESS PHONE:		888-314-9761

    	MAIL ADDRESS:
    		STREET 1:		1 CONCOURSE PARKWAY NE, SUITE 200
    		STREET 2:		ATTN: BRET T. JARDINE, ESQ.
    		CITY:			ATLANTA
    		STATE:			GA
    		ZIP:			30328
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>fa-20240228.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: fa-20240228.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-2.1
    <SEQUENCE>2
    <FILENAME>fa-ex2_1.htm
    <DESCRIPTION>EX-2.1
    <TEXT>
    Document 2 - file: fa-ex2_1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>3
    <FILENAME>fa-ex10_1.htm
    <DESCRIPTION>EX-10.1
    <TEXT>
    Document 3 - file: fa-ex10_1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.2
    <SEQUENCE>4
    <FILENAME>fa-ex10_2.htm
    <DESCRIPTION>EX-10.2
    <TEXT>
    Document 4 - file: fa-ex10_2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.3
    <SEQUENCE>5
    <FILENAME>fa-ex10_3.htm
    <DESCRIPTION>EX-10.3
    <TEXT>
    Document 5 - file: fa-ex10_3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.4
    <SEQUENCE>6
    <FILENAME>fa-ex10_4.htm
    <DESCRIPTION>EX-10.4
    <TEXT>
    Document 6 - file: fa-ex10_4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>7
    <FILENAME>fa-20240228.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT
    <TEXT>
    Document 7 - file: fa-20240228.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>8
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 8 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>10
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 12 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>14
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: FilingSummary.html

    Document 14 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>16
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>17
    <FILENAME>0000950170-24-023541-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: 0000950170-24-023541-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>18
    <FILENAME>fa-20240228_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 18 - file: fa-20240228_htm.html

    Document 18 - RAW XML: fa-20240228_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>