XML 204 R146.htm IDEA: XBRL DOCUMENT v3.20.1
Share-based payment arrangements - Long term incentive plan 2018 (Cash-settled) (Details) - shares
12 Months Ended
Feb. 09, 2017
Feb. 02, 2016
Dec. 31, 2019
Feb. 16, 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Vesting period     5 years  
Executive Committee | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage 33.30% 33.30%    
Long Term Incentive Plan 2018 | Executive Committee | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Number of phantom stocks granted (in shares)       154,432
Third anniversary | Long Term Incentive Plan 2018 | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage     33.33%  
Third anniversary | Long Term Incentive Plan 2018 | Executive Committee | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage     33.33%  
Vesting period     3 years  
Second anniversary | Long Term Incentive Plan 2018 | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage     33.33%  
Second anniversary | Long Term Incentive Plan 2018 | Executive Committee | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage     33.33%  
Vesting period     2 years  
Fourth anniversary | Long Term Incentive Plan 2018 | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage     33.33%  
Fourth anniversary | Long Term Incentive Plan 2018 | Executive Committee | Phantom Share Units (PSUs)        
Disclosure of terms and conditions of share-based payment arrangement [line items]        
Annual vesting percentage     33.33%  
Vesting period     4 years