GOODWILL AND INTANGIBLES - Definite-Lived Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 32.3	$ 5.4
Accumulated Amortization	3.7	5.0
Net Book Value	$ 28.6	$ 0.4
Weighted avg useful life	9 years 3 months 18 days	2 years 1 month 6 days
Client lists
Finite-Lived Intangible Assets [Line Items]
Amortization Period (Years)	10 years	10 years
Gross Carrying Amount	$ 26.1	$ 2.0
Accumulated Amortization	3.3	1.6
Net Book Value	$ 22.8	$ 0.4
Weighted avg useful life	9 years 3 months 18 days	2 years 1 month 6 days
Trademarks
Finite-Lived Intangible Assets [Line Items]
Amortization Period (Years)	10 years
Gross Carrying Amount	$ 6.2
Accumulated Amortization	0.4
Net Book Value	$ 5.8
Weighted avg useful life	9 years 4 months 24 days
Domain names
Finite-Lived Intangible Assets [Line Items]
Amortization Period (Years)		5 years
Gross Carrying Amount		$ 3.4
Accumulated Amortization		3.4
Net Book Value		$ 0.0
Weighted avg useful life		0 years