Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2024		Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net revenue:
Total net revenue	$ 444.7		$ 426.2	$ 1,235.9	$ 1,177.3
Cost of goods sold:
Total cost of goods sold	335.6		329.7	946.3	919.2
Gross profit:
Total gross profit	109.1		96.5	289.6	258.1
Operating expenses:
Selling, general and administrative	85.2		63.6	241.1	180.4
Marketing	11.5		9.2	29.8	26.9
Research and development	16.8		9.8	47.4	31.7
Depreciation and amortization	1.2		1.2	3.7	3.3
Total operating expenses	114.7		83.8	322.0	242.3
(Loss) income from operations	(5.6)		12.7	(32.4)	15.8
Interest income, net	4.0		3.5	11.1	9.0
Other income (expense), net	1.1		(0.1)	4.4	0.1
Total non-operating income, net	5.1		3.4	15.5	9.1
(Loss) income before income taxes	(0.5)		16.1	(16.9)	24.9
(Benefit from) provision for income taxes	(1.0)		2.3	(5.5)	9.9
Net income (loss)	$ 0.5	[1]	$ 13.8	$ (11.4)	$ 15.0
Net income (loss) per share attributable to Class A and Class B stockholders:
Basic (in dollars per share)	$ 0.00		$ 0.07	$ (0.06)	$ 0.08
Diluted (in dollars per share)	$ 0.00		$ 0.07	$ (0.06)	$ 0.08
Weighted-average Class A and Class B common shares outstanding:
Basic (in shares)	201.6		196.7	199.6	196.0
Diluted (in shares)	211.7		199.9	199.6	200.2
Device
Net revenue:
Total net revenue	$ 247.7		$ 270.0	$ 709.9	$ 753.4
Cost of goods sold:
Total cost of goods sold	254.4		273.3	723.0	754.7
Gross profit:
Total gross profit	(6.7)		(3.3)	(13.1)	(1.3)
Platform+
Net revenue:
Total net revenue	197.0		156.2	526.0	423.9
Cost of goods sold:
Total cost of goods sold	81.2		56.4	223.3	164.5
Gross profit:
Total gross profit	$ 115.8		$ 99.8	$ 302.7	$ 259.4

[1] Totals may not sum due to rounding