| Increase (decrease) in net assets available for benefits | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total increase (decrease) in net assets available for benefits | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The increase (decrease) in net assets available for benefits. Net assets available for benefits are assets of a retirement benefit plan less liabilities other than the actuarial present value of promised retirement benefits. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Hüvitisteks olemasoleva netovara suurenemine (vähenemine) | et | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Hüvitisteks olemasoleva netovara suurenemine (vähenemine). Hüvitisteks olemasolev netovara on pensionihüvitiste plaani varad, millest lahutatakse muud kohustised kui lubatud pensionihüvitiste aktuaarne nüüdisväärtus. | et | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Hüvitisteks olemasoleva netovara suurenemine (vähenemine) kokku. | et | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |