| The amount of income tax relating to amounts recognised in other comprehensive income in relation to changes in the fair value of financial liabilities attributable to a change in the credit risk of those liabilities. [Refer: Credit risk [member]; Other comprehensive income] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |