| The amount of current prepayments and current accrued income including current contract assets. [Refer: Prepayments; Accrued income including contract assets] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Total current prepayments and current accrued income including current contract assets | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Current prepayments and current accrued income including current contract assets | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |