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Goodwill and other intangible assets - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 13,100,000 $ 10,000,000.0 $ 35,800,000 $ 30,300,000
Impairment of goodwill 0 0 0 0
Impairment of intangible assets $ 0 $ 0 $ 0 $ 0