| Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce tax expense | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce tax expense | en | http://www.xbrl.org/2009/role/negatedTotalLabel | http://www.xbrl.org/2003/role/link |
| The amount of benefit arising from a previously unrecognised tax loss, tax credit or temporary difference of a prior period that is used to reduce tax expense. [Refer: Temporary differences [member]; Unused tax losses [member]; Unused tax credits [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |