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Segment Information - Long-Lived Assets by Geographic Areas (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets, net $ 392.4 $ 826.7
United States    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets, net 352.3 696.1
Switzerland    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets, net 0.0 88.1
Canada    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets, net 37.2 37.5
Other    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets, net $ 2.9 $ 5.0