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Contingencies and commitments (NEUPOGEN Patent Litigation) (Details) - patent	Oct. 03, 2018	Mar. 08, 2018	Dec. 13, 2017
Adello NEUPOGEN Patent Litigation [Member]
Gain Contingencies [Line Items]
Number of patents allegedly infringed	4	17
Apotex NEUPOGEN/Neulasta Patent Litigation [Member]
Gain Contingencies [Line Items]
Number of patents allegedly infringed			1

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Number of entity's patents that another entity has allegedly infringed.

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