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Schedule I Summary of Investments - Other Than Investments in Affiliates (Details) $ in Millions | Dec. 31, 2017 USD ($)
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Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | $ 43,759
Amount at which shown on Balance Sheet | 45,146
U.S. government and government agencies and authorities (guaranteed and sponsored) |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 4,492
Fair Value | 4,536
Amount at which shown on Balance Sheet | 4,536
States, municipalities and political subdivisions |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 11,743
Fair Value | 12,485
Amount at which shown on Balance Sheet | 12,485
Foreign government |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,071
Fair Value | 1,110
Amount at which shown on Balance Sheet | 1,110
Public utilities |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 2,097
Fair Value | 2,188
Amount at which shown on Balance Sheet | 2,188
All other corporate bonds |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 10,273
Fair Value | 10,616
Amount at which shown on Balance Sheet | 10,616
All other mortgage-backed and asset-backed securities |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 5,936
Fair Value | 6,029
Amount at which shown on Balance Sheet | 6,029
Total fixed maturities, available-for-sale |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 35,612
Fair Value | 36,964
Amount at which shown on Balance Sheet | 36,964
Fixed maturities, at fair value using fair value option |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 40
Fair Value | 41
Amount at which shown on Balance Sheet | 41
Total fixed maturities |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 35,652
Fair Value | 37,005
Amount at which shown on Balance Sheet | 37,005
Industrial, miscellaneous and all other |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 859
Fair Value | 959
Amount at which shown on Balance Sheet | 959
Non-redeemable preferred stocks |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 48
Fair Value | 53
Amount at which shown on Balance Sheet | 53
Equity securities |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 907
Fair Value | 1,012
Amount at which shown on Balance Sheet | 1,012
Mortgage loans |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 3,175
Fair Value | 3,220
Amount at which shown on Balance Sheet | 3,175
Futures, options and miscellaneous |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 167
Fair Value | 96
Amount at which shown on Balance Sheet | 96
Short-term investments |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 2,270
Fair Value | 2,270
Amount at which shown on Balance Sheet | 2,270
Investments in partnerships and trusts |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,588
Amount at which shown on Balance Sheet | $ 1,588

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- Definition This element represents the carrying (reported) amount of the entity's investments as of the balance sheet date. This amount may represent the individual investment's or group of similar investments' original cost, fair value, or such other amount at which the investment is shown in the entity's balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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- Definition This item represents the original cost of the entity's investments including investments in equity securities and, as to fixed maturities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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- Definition This item represents the reported amount of the entity's investments measured at fair value. Fair value is the price that would be received to sell an investment in an orderly transaction between market participants at the balance sheet [measurement] date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 7 -Subparagraph (SX 210.12-15) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010 + Details
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