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OTHER ASSETS, NET (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Intangible Assets      
Less accumulated depreciation and amortization $ (78.8) $ (70.9)  
Data processing software, net 54.3 38.5  
Other assets 127.6 87.3  
Total other assets, net 181.9 125.8  
Notes receivable, net 102.9 79.3  
Amortization expense 124.3 126.6 $ 124.8
Contra-revenue assets 19.9    
Software development work in progress      
Intangible Assets      
Software 8.9 5.6  
Data processing software      
Intangible Assets      
Software 124.2 103.8  
Amortization expense $ 7.2 $ 7.3 $ 6.9