| Sum of adjustments to the estimated reserve for unpaid claims and claims adjustment expense. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Liability for Unpaid Claims and Claims Adjustment Expense, Adjustments | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Liability for Unpaid Claims and Claims Adjustment Expense, Adjustments, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Liability for Unpaid Claims and Claims Adjustment Expense, Adjustments, Beginning Balance | en-US | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Liability for Unpaid Claims and Claims Adjustment Expense, Adjustments, Ending Balance | en-US | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |