| Concept |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2016-12-31 |
As at 2016-12-31 |
As at 2015-12-31 |
As at 2015-12-31 |
As at 2014-12-31 |
As at 2014-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Employees | ||||||||||
| Information about reporting company | ||||||||||
| Number of employees of reporting company | ||||||||||
| Number of employees |
393
xbrli:pure
|
401
xbrli:pure
|
394
xbrli:pure
|
xbrli:pure
|
370
xbrli:pure
|
396
xbrli:pure
|
358
xbrli:pure
|
388
xbrli:pure
|
348
xbrli:pure
|
383
xbrli:pure
|