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Collaborative Arrangements - Bristol Meyers Squibb Company - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Bristol Myers Squibb | Licensing Agreements |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Royalty rate, deduction, percentage | 50.00% |  |
Bristol Myers Squibb | Licensing Agreements | Regulatory Milestones |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Proceeds from collaborators |  |  | $ 20
Bristol Myers Squibb | Licensing Agreements | Alliance Revenue-Reblozyl |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Sales milestone payments | $ 80 |  |
Bristol Myers Squibb | Minimum | Licensing Agreements |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Royalty rate, percentage | 20.00% |  |
Bristol Myers Squibb | Maximum | Licensing Agreements |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Royalty rate, percentage | 24.00% |  |
Bristol Myers Squibb Company | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Revenue from collaborative arrangement | $ 371 | $ 212 | $ 166

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