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Share-Based Payments - Summary of Details of Share Based Payment Arrangement SO (Detail) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
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Sep. 15, 2017 EUR (€) € / shares | Jul. 17, 2017 EUR (€) € / shares | Jun. 15, 2017 EUR (€) € / shares | Apr. 18, 2017 EUR (€) € / shares | Mar. 15, 2017 EUR (€) € / shares | Jan. 16, 2017 EUR (€) € / shares | Dec. 15, 2016 EUR (€) € / shares | Dec. 09, 2016 EUR (€) € / shares | Nov. 15, 2016 EUR (€) € / shares | Oct. 17, 2016 EUR (€) € / shares | Sep. 15, 2016 EUR (€) € / shares | Aug. 01, 2016 EUR (€) € / shares | Jun. 21, 2016 EUR (€) € / shares | May 02, 2016 EUR (€) € / shares | Apr. 21, 2016 EUR (€) € / shares | Jan. 04, 2016 EUR (€) € / shares | Nov. 19, 2015 EUR (€) € / shares | Jun. 23, 2015 EUR (€) € / shares | Jun. 03, 2014 EUR (€) € / shares | Sep. 18, 2013 EUR (€) € / shares | Dec. 31, 2017 | Dec. 15, 2017 EUR (€) € / shares | Dec. 05, 2017 EUR (€) € / shares | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12/15/2027 | 12/05/2027 |  |
Number of options granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,300 | 625,200 |  |
Share entitlement per SO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1 | € 1 |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 38.18 | € 39.00 |  |
Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 36.43 | € 35.73 |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43.13% | 43.23% |  |
Expected dividends |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% |  |
Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year | 1 year |  |
Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (0.23%) | (0.23%) |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 13.5 | € 12.9 |  |
Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years | 4 years |  |
Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.07% | 0.07% |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 15.4 | € 14.7 |  |
Share Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 998,500 |  |  | 359,060 | 315,000
Date of Grant One [Member] | Share Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |
Date of Grant One [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  |  |  |  |  |  | 06/21/2026 |  |  |  |  |  |  | 09/18/2023 |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  |  |  |  |  | 110,000 |  |  |  |  |  |  | 518,000 |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  |  |  |  |  |  | € 53.96 |  |  |  |  |  |  | € 7.57 |  |  |  |  |
Date of Grant One [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  |  |  |  |  |  | € 52.97 |  |  |  |  |  |  | € 7.90 |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00% |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  | (0.01%) |  |  |  |  |  |  | 1.72% |  |  |  |  |
Expected dividends |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 3.57 |  |  |  |  |
Date of Grant One [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  | 4 years |  |  |  |  |
Date of Grant One [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  | 49.10% |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  | € 23.4 |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant One [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant One [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  | 50.30% |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  | € 25.5 |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Two [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  |  |  |  |  | 08/01/2026 |  |  |  |  |  |  | 06/03/2024 |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  | 75,000 |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  |  |  |  |  | € 62.24 |  |  |  |  |  |  | € 19.01 |  |  |  |  |  |
Date of Grant Two [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  |  |  |  |  | € 62.24 |  |  |  |  |  |  | € 19.01 |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00% |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  | (0.25%) |  |  |  |  |  |  | 0.89% |  |  |  |  |  |
Expected dividends |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 7.46 |  |  |  |  |  |
Date of Grant Two [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Two [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  | 48.80% |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  | € 27.3 |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Two [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Two [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  | 49.80% |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  | € 29.9 |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Three [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  |  |  |  | 09/15/2016 |  |  |  |  |  |  | 06/23/2025 |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  |  |  | 9,300 |  |  |  |  |  |  | 120,000 |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  |  |  |  | € 62.80 |  |  |  |  |  |  | € 48.90 |  |  |  |  |  |  |
Date of Grant Three [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  |  |  |  | € 62.80 |  |  |  |  |  |  | € 48.90 |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.00% |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  | (0.18%) |  |  |  |  |  |  | 0.89% |  |  |  |  |  |  |
Expected dividends |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 25.28 |  |  |  |  |  |  |
Date of Grant Three [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |
Date of Grant Three [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  | 48.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  | € 27.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Three [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |
Date of Grant Three [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  | 49.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  | € 30.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/21/2016 [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  |  |  | 10/17/2026 |  |  |  |  |  |  | 11/19/2025 |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  |  | 16,500 |  |  |  |  |  |  | 195,000 |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  |  |  | € 64.39 |  |  |  |  |  |  | € 66.06 |  |  |  |  |  |  |  |
Date of Grant 06/21/2016 [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  |  |  | € 64.39 |  |  |  |  |  |  | € 66.06 |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.00% |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.81% |  |  |  |  |  |  |  |
Expected dividends |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 34.05 |  |  |  |  |  |  |  |
Date of Grant 06/21/2016 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |
Date of Grant 06/21/2016 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  | 48.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  | (0.32%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  | € 27.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/21/2016 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |
Date of Grant 06/21/2016 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  | 48.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  | (0.15%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  |  | € 30.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/09/2016 [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  |  | 11/15/2026 |  |  |  |  |  |  | 01/04/2026 |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  |  | 8,300 |  |  |  |  |  |  | 75,000 |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  |  | € 68.33 |  |  |  |  |  |  | € 65.68 |  |  |  |  |  |  |  |  |
Date of Grant 06/09/2016 [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  |  | € 68.33 |  |  |  |  |  |  | € 65.68 |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.39% |  |  |  |  |  |  |  |  |
Expected dividends |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |
Date of Grant 06/09/2016 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |
Date of Grant 06/09/2016 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  | 47.80% |  |  |  |  |  |  | 49.30% |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  | (0.11%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  | € 29.4 |  |  |  |  |  |  | € 29.5 |  |  |  |  |  |  |  |  |
Date of Grant 06/09/2016 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |
Date of Grant 06/09/2016 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  | 48.80% |  |  |  |  |  |  | 49.80% |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  | 0.16% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  |  | € 32.7 |  |  |  |  |  |  | € 32.6 |  |  |  |  |  |  |  |  |
Date of Grant 06/15/2017 [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  |  | 12/09/2026 |  |  |  |  |  |  | 04/21/2026 |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  |  | 74,960 |  |  |  |  |  |  | 33,000 |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  |  | € 69.75 |  |  |  |  |  |  | € 62.82 |  |  |  |  |  |  |  |  |  |
Date of Grant 06/15/2017 [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  |  | € 69.75 |  |  |  |  |  |  | € 62.82 |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.04% |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |
Date of Grant 06/15/2017 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |
Date of Grant 06/15/2017 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  | 47.70% |  |  |  |  |  |  | 49.40% |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  | (0.20%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  | € 29.7 |  |  |  |  |  |  | € 28.3 |  |  |  |  |  |  |  |  |  |
Date of Grant 06/15/2017 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |
Date of Grant 06/15/2017 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  | 48.50% |  |  |  |  |  |  | 50.70% |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  | 0.18% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  |  | € 33.4 |  |  |  |  |  |  | € 30.9 |  |  |  |  |  |  |  |  |  |
Grant Date Twelve [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  |  | 12/15/2026 |  |  |  |  |  |  | 05/02/2026 |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  |  | 1,100 |  |  |  |  |  |  | 22,000 |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  |  | € 1 |  |  |  |  |  |  | € 1 |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  |  | € 69.35 |  |  |  |  |  |  | € 59.04 |  |  |  |  |  |  |  |  |  |  |
Grant Date Twelve [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  |  | € 69.35 |  |  |  |  |  |  | € 58.62 |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  | 40.44% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.10% |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |
Grant Date Twelve [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  | 1 year |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |
Grant Date Twelve [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  | 49.30% |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  | (0.18%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  | € 25.2 |  |  |  |  |  |  | € 26.4 |  |  |  |  |  |  |  |  |  |  |
Grant Date Twelve [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  | 4 years |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |
Grant Date Twelve [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.60% |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  | 0.16% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  |  | € 28.7 |  |  |  |  |  |  | € 28.8 |  |  |  |  |  |  |  |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  | 10 years |  |  |  |  |  | 10 years |  |  |  |  |  |  |  | 10 years |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  |  | 01/16/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  |  | 19,100.000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  |  | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  |  | € 66.11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  |  | € 66.11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  |  | 40.21% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  | (0.17%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  | € 23.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Seven [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  | 0.19% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  |  | € 27.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date thirteen [member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  |  | 03/15/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  |  | 7,200.000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  |  | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  |  | € 66.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date thirteen [member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  |  | € 65.42 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  |  | 39.82% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date thirteen [member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date thirteen [member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  | 0.21% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  | € 23.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date thirteen [member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date thirteen [member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  | 0.61% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  |  | € 27.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/24/2011 [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  |  | 04/18/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  |  | 16,500.000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  |  | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  |  | € 60.77 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/24/2011 [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  |  | € 59.73 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  |  | 39.63% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/24/2011 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/24/2011 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  | 0.02% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  | € 21.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/24/2011 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 06/24/2011 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  | 0.39% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  |  | € 24.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 11/22/2011 [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  | 06/15/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  | 126,000.000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  | € 59.05 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 11/22/2011 [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  | € 59.05 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  | 39.23% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 11/22/2011 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 11/22/2011 [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | (0.21%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  | € 20.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 11/22/2011 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant 11/22/2011 [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 0.07% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  | € 23.60 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Sixteen [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  |  | 06/15/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  |  | 111.600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  |  | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  |  | € 60.54 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Sixteen [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  |  | € 59.05 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  | 39.23% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Sixteen [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Sixteen [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | (0.21%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  | € 20.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Sixteen [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Sixteen [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 0.07% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  |  | € 232.22 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date |  | 07/17/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted |  | 30,900.000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO |  | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € |  | € 71.61 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € |  | € 71.61 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  | 38.84% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  | € 25.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Date of Grant Eight [Member] | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  | 0.34% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) |  | € 28.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Seventeen Member | Share Option [Member] | Board of Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan expiration date | 09/15/2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted | 52,600.000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share entitlement per SO | € 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price (in euros) | € | € 74.22 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Seventeen Member | Share Option [Member] | Board of Director [Member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant date share fair value (in euros) | € | € 71.80 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility | 38.57% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected dividends | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Seventeen Member | Share Option [Member] | Board of Director [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Seventeen Member | Share Option [Member] | Board of Director [Member] | Bottom of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | (0.14%) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) | € 24.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Seventeen Member | Share Option [Member] | Board of Director [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period (years) | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Grant Date Seventeen Member | Share Option [Member] | Board of Director [Member] | Top of range [member] | Black and Scholes Method [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average life of SO (in years) | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 0.19% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value per SO (in euros) | € 27.80 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 47 -Subparagraph a -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 + Details
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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 -Subparagraph a -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 + Details
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- Definition The weighted average exercise price of share options granted in a share-based payment arrangement. [Refer: Weighted average [member]] + 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 + Details
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Data Type: | na
Balance Type: |
Period Type: |