| Allowance account for credit losses of financial assets | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Allowance account for credit losses of financial assets at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Allowance account for credit losses of financial assets at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |