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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]        
Total revenues   $ 2,026.0 $ 1,636.9 $ 930.7
Foreign currency transaction losses   4.8 (7.5) (3.5)
Restricted cash $ 0.6 0.6 0.6  
Acquisition costs     45.5 8.7
Goodwill impairment expense   $ 401.0 0.0 0.0
Software useful life   7 years    
Amortization of capitalized software   $ 5.0 4.4 2.8
Accumulated amortization of capitalized software costs 30.9 30.9 36.5  
Foreign currency translation adjustments (losses)   133.8    
Deferred gain released from AOCL   8.9    
ATM        
Schedule of Equity Method Investments [Line Items]        
Total revenues   1,610.0 1,396.2 930.7
Goodwill impairment expense $ 401.0 401.0 0.0  
Other Operating Income (Expense)        
Schedule of Equity Method Investments [Line Items]        
Foreign currency transaction losses   $ 1.7 1.8 6.9
Restricted Stock Plan        
Schedule of Equity Method Investments [Line Items]        
Plan performance period (years)   3 years    
Minimum | Restricted Stock        
Schedule of Equity Method Investments [Line Items]        
Share based compensation vesting period (years)   1 year    
Minimum | Customer relationships        
Schedule of Equity Method Investments [Line Items]        
Estimated useful life 12 years 12 years    
Minimum | Developed technology        
Schedule of Equity Method Investments [Line Items]        
Estimated useful life 4 years 4 years    
Maximum | Restricted Stock        
Schedule of Equity Method Investments [Line Items]        
Share based compensation vesting period (years)   3 years    
Maximum | Customer relationships        
Schedule of Equity Method Investments [Line Items]        
Estimated useful life 23 years 23 years    
Maximum | Developed technology        
Schedule of Equity Method Investments [Line Items]        
Estimated useful life 20 years 20 years    
Royalty        
Schedule of Equity Method Investments [Line Items]        
Total revenues   $ 4.4 $ 6.9 $ 6.1