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Schedule VI Supplementary Information Concerning Property and Casualty Insurance Operations (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Property and Casualty Insurance Products |  |  |
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items] |  |  |
Discount Deducted From Liabilities | $ 388 | $ 410 | $ 483
Weighted average interest rate | 2.98% | 3.06% | 3.11%
Property and Casualty Insurance Products |  |  |
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items] |  |  |
Losses and Loss Adjustment Expenses Incurred Related to: Current Year | $ 7,107 | $ 7,381 | $ 6,990
Losses and Loss Adjustment Expenses Incurred Related to: Prior Year | (167) | (41) | 457
Paid Losses and Loss Adjustment Expenses | $ 6,406 | $ 6,579 | $ 6,968

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- Definition Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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- Definition Amount of cumulative discount related to the time value of money deducted from short-duration insurance contract liabilities that are reported at present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99384497&loc=d3e14881-158438 + 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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- Definition Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods 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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- Definition The average discount rate applied to insurance contracts to determine future policy benefits to be paid to or on behalf of policyholders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99384497&loc=d3e14881-158438 + Details
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