The cash inflow from milestone payments from collaborative arrangements with third parities.

No definition available.

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Namespace Prefix:	aciu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2016-01-13
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2016-03-30&anchor=para_45&doctype=Standard
-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph B13
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_B13_a&doctype=Appendix&seq=2
-URIDate 2016-03-31

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 54
-Subparagraph i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_54_i&doctype=Standard
-URIDate 2016-03-31

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow from the issuing of ordinary shares. [Refer: Ordinary shares [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2016-01-13
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2016-03-30&anchor=para_17&doctype=Standard
-URIDate 2016-03-31

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the issuing of preference shares. [Refer: Preference shares [member]]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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- Details

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Basis of preparation (Details) SFr in Thousands, $ in Millions			1 Months Ended		12 Months Ended
	Sep. 22, 2016 CHF (SFr)	Sep. 22, 2016 USD ($)	Apr. 30, 2016 CHF (SFr)	Apr. 30, 2016 USD ($)	Dec. 31, 2017 CHF (SFr)	Dec. 31, 2016 CHF (SFr)	Dec. 31, 2015 CHF (SFr)	Dec. 31, 2014 CHF (SFr)
Going concern [Abstract]
Company's cash position					SFr 124,377	SFr 152,210	SFr 76,522	SFr 3,306
Private placement extension financing					0	13,206	SFr 29,499
Genentech [Member]
Going concern [Abstract]
Receipt of clinical milestone payment					SFr 14,000	14,000
Janssen [Member]
Going concern [Abstract]
Receipt of clinical milestone payment						SFr 4,900
Initial Public Offering [Member]
Going concern [Abstract]
Gross proceeds received	SFr 74,500	$ 75.9
Series E [Member]
Going concern [Abstract]
Private placement extension financing			SFr 13,200	$ 13.5