XML 209 R164.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-based compensation - Restricted shares (Detail)
12 Months Ended
Dec. 31, 2018
EUR (€)
Dec. 31, 2017
EUR (€)
Euro [Member]    
Share-based compensation - Text Details (Detail) [Line Items]    
Number of other equity instruments outstanding in share-based payment arrangement   1,807,009
Euro [Member] | Restricted shares [Member]    
Share-based compensation - Text Details (Detail) [Line Items]    
Number of other equity instruments outstanding in share-based payment arrangement 2,220,891  
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement € 29.69  
Number of other equity instruments granted in share-based payment arrangement 729,798  
Weighted average exercise price of other equity instruments granted in share-based payment arrangement € 33.15  
Notional Dividends [1] 52,317  
Weighted Average Exercise Price Notional Dividends [1] € 29.58  
Number of other equity instruments exercised or vested in share-based payment arrangement 193,968  
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement € 25.40  
Number of other equity instruments forfeited in share-based payment arrangement 174,266  
Weighted average exercise price of other equity instruments forfeited in share-based payment arrangement € 28.52  
US Dollar [Member]    
Share-based compensation - Text Details (Detail) [Line Items]    
Number of other equity instruments outstanding in share-based payment arrangement   1,753,505
US Dollar [Member] | Restricted shares [Member]    
Share-based compensation - Text Details (Detail) [Line Items]    
Number of other equity instruments outstanding in share-based payment arrangement 1,905,867  
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement € 33.58 € 31.26
Number of other equity instruments granted in share-based payment arrangement 717,654  
Weighted average exercise price of other equity instruments granted in share-based payment arrangement € 36.67  
Notional Dividends [1] 48,082  
Weighted Average Exercise Price Notional Dividends [1] € 33.35  
Number of other equity instruments exercised or vested in share-based payment arrangement 407,743  
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement € 28.84  
Number of other equity instruments forfeited in share-based payment arrangement 205,630  
Weighted average exercise price of other equity instruments forfeited in share-based payment arrangement € 33.97  
[1] Dividend declared in 2018 on outstanding shares.