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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Holiday [Line Items]
Swiss tax benefits, net of valuation allowance	$ 92.3	$ 0.0	$ 0.0
Swiss tax benefits, valuation allowance	67.3
One-time tax benefit	67.1	0.0	66.4
Excise tax accrued	0.0
Net operating loss carryforwards	38.2
Swiss tax credit carryforwards	122.4	0.0
Research and development credit carryforwards	193.2	156.7
Valuation allowance	269.8	168.6
Gross interest related to unrecognized tax benefits accrued	31.2	21.0	14.9
Total gross unrecognized tax benefits	260.4	252.6	$ 222.5	$ 176.3
Unrecognized tax benefits that would impact effective tax rate	181.8
Interest and penalties related to unrecognized tax benefits accrued		$ 13.6
Research Tax Credit Carryforward, Other
Income Tax Holiday [Line Items]
Research and development credit carryforwards	5.2
California Franchise Tax Board | Research Tax Credit Carryforward, State
Income Tax Holiday [Line Items]
Research and development credit carryforwards	$ 267.7

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Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax.

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