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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Name:	us-gaap_GainContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Contingencies and commitments (NEUPOGEN Patent Litigation) (Details) - patent				1 Months Ended
	May 20, 2019	Mar. 08, 2018	May 22, 2017	Oct. 31, 2018
Adello NEUPOGEN Patent Litigation
Gain Contingencies [Line Items]
Number of patents allegedly infringed		17		4
Apotex NEUPOGEN/Neulasta Patent Litigation
Gain Contingencies [Line Items]
Number of patents allegedly infringed	1		1