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Goodwill and intangible assets, net - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]        
Goodwill acquired     $ 60.0  
Amortization expense   $ 7.4 $ 24.9 $ 1.3
Impairment charges for intangible assets $ 9.4      
Sales and marketing        
Finite-Lived Intangible Assets [Line Items]        
Impairment charges for intangible assets 6.3      
Cost of revenue        
Finite-Lived Intangible Assets [Line Items]        
Impairment charges for intangible assets $ 3.1