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OTHER ASSETS, NET (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets
Less accumulated depreciation and amortization	$ (98.3)	$ (88.3)
Data processing software, net	46.8	43.3
Other assets	135.9	163.0
Other assets, net	182.7	206.3
Notes receivable, net	124.2	136.9
Contra-revenue assets	0.0	18.1
Amortization expense	88.7	116.6	$ 124.3
Software development work in progress
Intangible Assets
Software	18.7	3.5
Data processing software
Intangible Assets
Software	126.4	128.1
Amortization expense	$ 10.3	$ 8.4	$ 7.2

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