| Amount of consolidated variable interest entity's (VIE) liabilities that have recourse to general credit of primary beneficiary. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Variable Interest Entity, Consolidated, Liabilities, Recourse (Deprecated 2020-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Variable Interest Entity, Consolidated, Liabilities, Recourse, Total (Deprecated 2020-01-31) | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |