Goodwill and intangible assets - Intangible Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Gross Carrying Amount	$ 65.5	$ 37.9
Accumulated Amortization	13.1	3.0
Net Carrying Amount	52.4	34.9
Measurement period adjustments, decrease in fair value of intangibles	27.6
Technology
Goodwill [Line Items]
Gross Carrying Amount	10.0	10.0
Accumulated Amortization	4.9	1.8
Net Carrying Amount	5.1	8.2
Customer relationships
Goodwill [Line Items]
Gross Carrying Amount	54.2	27.0
Accumulated Amortization	7.9	1.2
Net Carrying Amount	46.3	25.8
Trademark
Goodwill [Line Items]
Gross Carrying Amount	1.3	0.9
Accumulated Amortization	0.3	0.0
Net Carrying Amount	$ 1.0	$ 0.9