Summary of significant accounting policies - Revenue Recognition (Details)	6 Months Ended
Jun. 30, 2020
Revenue recognition
Percentage of Medicare Part D insurance coverage gap mandate to be funded by manufacturers	70.00%
Increase in required patient spending in the Medicare Part D insurance coverage gap (as a percent)	30.00%
MorphoSys AG
Revenue recognition
Profit (loss) sharing ratio	50.00%
ICLUSIG
Revenue recognition
Amortization period	12 years 6 months

Ratio of sharing profit and losses under the collaboration agreement.

No definition available.

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- Definition

Represents the Medicare Part D insurance coverage gap percent increase for required patient spending.

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No definition available.

+ Details

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- Definition

Represents the percentage of Medicare Part D insurance coverage gap mandate to be funded by manufacturers for prescription drugs sold to eligible patients.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Details

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- Details

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