XML 174 R134.htm IDEA: XBRL DOCUMENT v3.8.0.1

Events After the Close of the Fiscal Year - Additional Information (Detail) € in Thousands		3 Months Ended	12 Months Ended
	Feb. 14, 2018	Mar. 31, 2018 EUR (€)	Dec. 31, 2017 EUR (€)	Dec. 31, 2016 EUR (€)	Dec. 31, 2015 EUR (€)
Disclosure of non-adjusting events after reporting period [line items]
Share-based compensation expense corresponding to the acceleration of the vesting period			€ 30,781	€ 34,353	€ 10,419
Accelerated vesting period [member] | Scenario, Forecast [member]
Disclosure of non-adjusting events after reporting period [line items]
Share-based compensation expense corresponding to the acceleration of the vesting period		€ 5,400
Bottom of range [member] | Events after reporting period [member]
Disclosure of non-adjusting events after reporting period [line items]
Peanut allergy treatment covering age as per BLA	4
Top of range [member] | Events after reporting period [member]
Disclosure of non-adjusting events after reporting period [line items]
Peanut allergy treatment covering age as per BLA	11

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- Definition

Peanut allergy treatment covering age.

+ References

No definition available.

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- Definition

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+ References

No definition available.

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- Definition

The amount of expense from share-based payment transactions with employees.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2017-03-09

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