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Long-lived asset impairment and restructuring charges - Schedule of Impairment of Long-Lived Assets Held and Used by Asset (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Impaired Long-Lived Assets Held and Used [Line Items]      
Total impairment of long-lived assets $ 306.7 $ 0.0 $ 0.0
Buildings, building improvements and leasehold improvements      
Impaired Long-Lived Assets Held and Used [Line Items]      
Total impairment of long-lived assets 81.5    
Furniture and equipment      
Impaired Long-Lived Assets Held and Used [Line Items]      
Total impairment of long-lived assets 117.5    
Software      
Impaired Long-Lived Assets Held and Used [Line Items]      
Total impairment of long-lived assets 0.3    
Construction-in-progress      
Impaired Long-Lived Assets Held and Used [Line Items]      
Total impairment of long-lived assets $ 107.4