| The amount of impairment loss recognised in other comprehensive income for property, plant and equipment. [Refer: Impairment loss recognised in other comprehensive income; Property, plant and equipment] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Impairment loss recognised in other comprehensive income, property, plant and equipment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Impairment loss recognised in other comprehensive income, property, plant and equipment | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |