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Reinsurance and Indemnification - New Jersey Property-Liability Insurance Guaranty Association (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Reinsurance Retention Policy [Line Items] |  |
Reinsurance and indemnification recoverables, net | $ 9,565,000,000 | $ 8,921,000,000
New Jersey Unsatisfied Claim and Judgment Fund |  |
Reinsurance Retention Policy [Line Items] |  |
Minimum medical benefits portion of personal injury protection coverage for reimbursement to insurers for policies issued or renewed prior to January 1, 1991 | 75,000 |
Minimum medical benefits portion of personal injury protection coverage for reimbursement to insurers for policies issued or renewed from January 1, 1991 to December 31, 2004 | 75,000 |
Maximum reimbursement to insurers for medical benefits paid under personal injury protection coverage. | 250,000 |
Reinsurance, administration assessments paid | 8,900,000 |
Reinsurance and indemnification recoverables, net | 461,000,000 | $ 493,000,000
Insurance fund balance | 41,000,000 |
PLGIA |  |
Reinsurance Retention Policy [Line Items] |  |
Insurance fund balance | $ 250,000,000 |

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- Definition Represents the maximum portion reimbursement to insurers for medical benefits paid under the personal injury protection coverage. + References No definition available. + Details
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- Definition Represents the minimum medical benefits portion of personal injury protection coverage for reimbursement to insurers for policies issued or renewed from January 1, 1991 to December 31, 2004. + References No definition available. + Details
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- Definition Represents the minimum medical benefits portion of personal injury protection coverage for reimbursement to insurers for policies issued or renewed prior to January 1, 1991. + References No definition available. + Details
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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),6) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=99397103&loc=d3e6824-158387 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=99404803&loc=d3e21409-158489 + Details
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