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General Subsequent Event (Details) - USD ($) $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2017
Subsequent Event [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense |  | $ 14,186 | $ 14,963
Subsequent Event [Member] | Hurricane [Member] | Maximum [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense | $ 250 |  |
Subsequent Event [Member] | Hurricane [Member] | Minimum [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Current Year Claims and Claims Adjustment Expense | $ 150 |  |

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Definition Amount, after effects of reinsurance, of expense for claims incurred in the current reporting period and related claims settlement costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 + Details
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- Details
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