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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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EQUITY - Warrants, Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
EQUITY - Warrants, Narrative (Details) - USD ($)	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2024
Capital Unit [Line Items]
Stock-based compensation expense	$ 26,098,000	$ 5,324,000	$ 51,976,000	$ 10,665,000
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Capital Unit [Line Items]
Stock-based compensation expense	23,567,000	1,795,000	47,041,000	3,521,000
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Capital Unit [Line Items]
Stock-based compensation expense	1,453,000	3,278,000	3,294,000	6,737,000
Location, Statement of Income, Balance [Axis]: us-gaap:SellingAndMarketingExpense
Capital Unit [Line Items]
Stock-based compensation expense	898,000	103,000	1,309,000	182,000
Location, Statement of Income, Balance [Axis]: figr:OperationsAndProcessingExpense
Capital Unit [Line Items]
Stock-based compensation expense	$ 180,000	148,000	$ 332,000	225,000
Series E Preferred Stock
Capital Unit [Line Items]
Number of warrants (in shares)					2,467,319
Series E Preferred Shares in Exchange for Software License
Capital Unit [Line Items]
Number of warrants (in shares)					411,219
Series E Preferred Shares in Exchange for One Year of Software Development Services
Capital Unit [Line Items]
Number of warrants (in shares)					411,219
Series E Preferred Shares in Exchange for Two Years of Other Services
Capital Unit [Line Items]
Number of warrants (in shares)					1,644,881
Common Class A
Capital Unit [Line Items]
Warrants exercise price (in dollars per share)	$ 3.23		$ 3.23
Warrant
Capital Unit [Line Items]
Equity-based compensation expense	$ 0		$ 0
Warrant \| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Capital Unit [Line Items]
Stock-based compensation expense	$ 0	$ 2,500,000	$ 0	$ 4,700,000