| Tax rate effect of revenues exempt from taxation | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Tax rate effect of revenues exempt from taxation | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from revenue that is exempt from taxation. [Refer: Average effective tax rate; Applicable tax rate] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |