| Aggregate difference between fair value at initial recognition and transaction price yet to be recognised in profit or loss | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Aggregate difference between fair value at initial recognition and transaction price yet to be recognised in profit or loss at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Aggregate difference between fair value at initial recognition and transaction price yet to be recognised in profit or loss at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |