v3.26.1
Intangible assets and goodwill - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Intangible Asset, Goodwill and Other [Abstract]        
Amortization expense $ 41,500,000 $ 38,000,000.0 $ 79,200,000 $ 76,100,000
Change in goodwill     $ 0