Expected dividend as percentage, other equity instruments granted.

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- Definition

Expected turnover during the vesting period.

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No definition available.

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- Definition

Share based payment arrangement performance conditions.

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No definition available.

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- Definition

Share Based Payment Arrangement Share Entitlement Per Non Option Granted

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No definition available.

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- Definition

Share based payment arrangement share entitlement per stock granted.

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No definition available.

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- Definition

Share based payment arrangement vesting period.

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No definition available.

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- Definition

Share-based payment arrangement vesting rights percentage.

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No definition available.

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- Definition

Weighted average share price of other equity instruments granted.

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No definition available.

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- Definition

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

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No definition available.

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- Definition

The percentage of an expected dividend used to calculate the fair value of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2017-01-01
-Paragraph 47
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-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_47_a_i&doctype=Standard
-URIDate 2017-03-09

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- Definition

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2017-01-01
-Paragraph 47
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_47_b&doctype=Standard
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
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-IssueDate 2017-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45&doctype=Standard
-URIDate 2017-03-09

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- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2017-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_b_ii&doctype=Standard
-URIDate 2017-03-09

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- Definition

The weighted average fair value of share options granted during the period at the measurement date. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2017-01-01
-Paragraph 47
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_47_a&doctype=Standard
-URIDate 2017-03-09

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Disclosure - Share-Based Payments - Summary of Details of Share Based Payment Arrangement Free Shares (Detail)																12 Months Ended
	Apr. 20, 2017 € / shares	Mar. 14, 2017 € / shares	Dec. 09, 2016 EUR (€) € / shares	Oct. 27, 2016 EUR (€) € / shares	Sep. 01, 2016 EUR (€) € / shares	Aug. 16, 2016 EUR (€) € / shares	Jun. 21, 2016 EUR (€) € / shares	Apr. 06, 2016 EUR (€) € / shares	Dec. 15, 2015 EUR (€) € / shares	Sep. 30, 2015 EUR (€) € / shares	Jun. 03, 2014 EUR (€) € / shares	Sep. 12, 2013 EUR (€) € / shares	Nov. 28, 2012 EUR (€) € / shares	Jul. 25, 2012 EUR (€) € / shares	Apr. 02, 2012 EUR (€) € / shares	Dec. 31, 2017	Dec. 15, 2017 € / shares	Dec. 05, 2017 € / shares	Dec. 31, 2016	Dec. 31, 2015
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of options granted																	8,300	625,200
Share entitlement per free share																	€ 1	€ 1
Free Share [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of options granted																46,500			310,350	750,500
Date of Grant One [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)															2 years
Number of options granted															669,796
Share entitlement per free share															€ 1
Grant date share fair value (in euros) \| €															€ 8.86
Expected dividends															0.00%
Performance conditions															Yes
Expected turnover during the vesting period															1.00%
Date of Grant Two [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)														2 years
Number of options granted														134,081
Share entitlement per free share														€ 1
Grant date share fair value (in euros) \| €														€ 8.20
Expected dividends														0.00%
Performance conditions														Yes
Expected turnover during the vesting period														1.00%
Date of Grant Three [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)													2 years
Number of options granted													35,360
Share entitlement per free share													€ 1
Grant date share fair value (in euros) \| €													€ 8.70
Expected dividends													0.00%
Performance conditions													No
Expected turnover during the vesting period													1.00%
Date of Grant Four [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)												2 years
Number of options granted												501,500
Share entitlement per free share												€ 1
Grant date share fair value (in euros) \| €												€ 7.96
Expected dividends												0.00%
Performance conditions												Yes
Expected turnover during the vesting period												1.00%
Date of Grant Five [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)											2 years
Number of options granted											186,000
Share entitlement per free share											€ 1
Grant date share fair value (in euros) \| €											€ 19.01
Expected dividends											0.00%
Performance conditions											Yes
Expected turnover during the vesting period											1.00%
Date of Grant 03/24/2015 [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)		2 years								2 years
Number of options granted										708,500
Share entitlement per free share										€ 1
Grant date share fair value (in euros) \| €										€ 62.99
Expected dividends										0.00%
Performance conditions		yes								Yes
Expected turnover during the vesting period										0.00%
Number of free shares granted		22,500
Share entitlement per free share		€ 1
Grant date share fair value (in euros)		€ 68.07
Expected dividends		0.00%
Expected turnover during the vesting period		0.00%
Date of Grant Seven [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)	2 years								2 years
Number of options granted									42,000
Share entitlement per free share									€ 1
Grant date share fair value (in euros) \| €									€ 64.14
Expected dividends									0.00%
Performance conditions	yes								Yes
Expected turnover during the vesting period									0.00%
Number of free shares granted	24,000
Share entitlement per free share	€ 1
Grant date share fair value (in euros)	€ 61.20
Expected dividends	0.00%
Expected turnover during the vesting period	0.00%
Date of Grant Eight [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)								2 years
Number of options granted								63,750
Share entitlement per free share								€ 1
Grant date share fair value (in euros) \| €								€ 62.40
Expected dividends								0.00%
Performance conditions								yes
Expected turnover during the vesting period								0.00%
Date of Grant 06/21/2016 [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)							2 years
Number of options granted							193,000
Share entitlement per free share							€ 1
Grant date share fair value (in euros) \| €							€ 52.97
Expected dividends							0.00%
Performance conditions							yes
Expected turnover during the vesting period							0.00%
Date of Grant 06/09/2016 [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)						2 years
Number of options granted						10,000
Share entitlement per free share						€ 1
Grant date share fair value (in euros) \| €						€ 60.68
Expected dividends						0.00%
Performance conditions						yes
Expected turnover during the vesting period						0.00%
Date of Grant 06/15/2017 [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)					2 years
Number of options granted					5,000
Share entitlement per free share					€ 1
Grant date share fair value (in euros) \| €					€ 61.49
Expected dividends					0.00%
Performance conditions					yes
Expected turnover during the vesting period					0.00%
Grant Date Twelve [Member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)				2 years
Number of options granted				15,000
Share entitlement per free share				€ 1
Grant date share fair value (in euros) \| €				€ 67.44
Expected dividends				0.00%
Performance conditions				yes
Expected turnover during the vesting period				0.00%
Grant date thirteen [member] \| Free Share [Member] \| Board of Director [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period (years)			2 years
Number of options granted			23,600
Share entitlement per free share			€ 1
Grant date share fair value (in euros) \| €			€ 69.75
Expected dividends			0.00%
Performance conditions			yes
Expected turnover during the vesting period			0.00%