| The amount of decrease in the fair value measurement of liabilities, recognised in other comprehensive income before tax, due to a change in multiple unobservable inputs to reflect reasonably possible alternative assumptions. [Refer: Tax income (expense)] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Decrease in fair value measurement due to change in multiple unobservable inputs to reflect reasonably possible alternative assumptions, recognised in other comprehensive income, before tax, liabilities | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |