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Collaborative and Other Relationships - Samsung Bioepis (Details) $ in Millions	1 Months Ended	3 Months Ended			12 Months Ended
	Dec. 31, 2019 product	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Collaborative arrangements and non-collaborative arrangement transactions
Payments to Acquire Intangible Assets		$ 10.0		$ 75.0
Collaboration profit sharing/(loss reimbursement)		58.1		65.6
Samsung Bioepis
Collaborative arrangements and non-collaborative arrangement transactions
Collaboration profit sharing/(loss reimbursement)		$ 48.0		$ 60.6
Samsung Bioepis
Collaborative arrangements and non-collaborative arrangement transactions
Contingent Commercialized Rights, Number Of Products | product	2
Expected profit share percentage	45.00%	50.00%
Impairment of intangible assets (excluding goodwill)					$ 20.2
Payments to Acquire Intangible Assets			$ 15.0
Estimated additional payments upon achievement of development and commercial milestones			150.0		150.0
Collaboration agreement term		5 years
Option exercise fee		$ 60.0
Samsung Bioepis | Related Party
Collaborative arrangements and non-collaborative arrangement transactions
Accounts receivable		3.9	7.6		7.6
Accounts payable		$ 72.9	$ 60.8		$ 60.8

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