Goodwill and intangible assets - Additional information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 22.3	$ 22.8	$ 44.7	$ 45.4

Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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