| Debt Securities, Available-for-sale, Allowance for Credit Loss | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Debt Securities, Available-for-sale, Allowance for Credit Loss, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Debt Securities, Available-for-sale, Allowance for Credit Loss, Beginning Balance | en-US | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Debt Securities, Available-for-sale, Allowance for Credit Loss, Ending Balance | en-US | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |