| The decrease in the fair value measurement of entity's own equity instruments resulting from sales. [Refer: At fair value [member]; Entity's own equity instruments [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Sales, fair value measurement, entity's own equity instruments | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Sales, fair value measurement, entity's own equity instruments | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |