Summary of Significant Accounting Policies - Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Product Information [Line Items]
Capitalized software	$ 31.2	$ 17.1
Amortization expense	3.9	1.0	$ 0.0
Advertising costs	$ 10.6	2.3	1.1
Defined contribution plan, employer discretionary matching contribution, percent of match	50.00%
Defined contribution plan, participant's pre-tax contributions, percent of eligible compensation per pay period	6.00%
Defined contribution plan, contribution expense	$ 15.3	10.7	8.6
Purchased and capitalized software costs held for internal use
Product Information [Line Items]
Estimated useful life (in years)	3 years
Capitalized software		3.5
Amortization expense	$ 5.0		2.4
Shipping and handling costs
Product Information [Line Items]
Cost of revenues	$ 54.7	$ 43.5	$ 42.2