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Subsequent events (Details) - Arrangement - Marathon Pharmaceuticals, LLC shares in Millions, $ in Millions | Mar. 16, 2017 USD ($) shares
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Subsequent Event |
Subsequent Event [Line Items] |
Acquisition price | $ 140
Payments to acquire | 75
Equity interest issued or issuable | $ 65
Trading day period | 15 days
Threshold | 19.90%
Equity interest issued or issuable, number of shares (in shares) | shares | 6.9
Scenario, Forecast |
Subsequent Event [Line Items] |
Development and regulatory milestone payments which the entity may be obligated to pay | $ 50

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