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Schedule I Summary of Investments - Other Than Investments in Affiliates Level 4 (Details) $ in Millions | Dec. 31, 2015 USD ($)
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Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | $ 70,996
Amount which shown on Balance Sheet | 72,728
Fixed Maturities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 57,475
Fair Value | 59,699
Amount which shown on Balance Sheet | 59,699
Industrial, miscellaneous and all other [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 969
Fair Value | 956
Amount which shown on Balance Sheet | 956
Non-redeemable preferred stocks [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 166
Fair Value | 165
Amount which shown on Balance Sheet | 165
Equity Securities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,145
Fair Value | 1,132
Amount which shown on Balance Sheet | 1,132
Mortgage loans [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 5,624
Fair Value | 5,736
Amount which shown on Balance Sheet | 5,624
Policy Loans [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,447
Fair Value | 1,447
Amount which shown on Balance Sheet | 1,447
Investments in partnerships and trusts [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | $ 2,874
Fair Value |
Amount which shown on Balance Sheet | $ 2,874
Futures Options and Miscellaneous [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 588
Fair Value | 109
Amount which shown on Balance Sheet | 109
Short-term Investments [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,843
Fair Value | 1,843
Amount which shown on Balance Sheet | 1,843
Trading Securities [Member] | Equity Securities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 10
Fair Value | 11
Amount which shown on Balance Sheet | 11
Available-for-sale Securities [Member] | Equity Securities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,135
Fair Value | 1,121
Amount which shown on Balance Sheet | 1,121
Available-for-sale Securities [Member] | Fixed Maturities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 510
Fair Value | 503
Amount which shown on Balance Sheet | 503
Portion at Fair Value Measurement [Member] | U.S. government and government agencies and authorities (guaranteed and sponsored) [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 7,911
Fair Value | 8,179
Amount which shown on Balance Sheet | 8,179
Portion at Fair Value Measurement [Member] | US States and Political Subdivisions Debt Securities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 11,124
Fair Value | 12,121
Amount which shown on Balance Sheet | 12,121
Portion at Fair Value Measurement [Member] | Foreign governments [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 1,321
Fair Value | 1,308
Amount which shown on Balance Sheet | 1,308
Portion at Fair Value Measurement [Member] | Public utilities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 4,395
Fair Value | 4,634
Amount which shown on Balance Sheet | 4,634
Portion at Fair Value Measurement [Member] | All other corporate bonds [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 21,481
Fair Value | 22,168
Amount which shown on Balance Sheet | 22,168
Portion at Fair Value Measurement [Member] | All Other Mortgage Backed and Asset Backed Securities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 10,733
Fair Value | 10,786
Amount which shown on Balance Sheet | 10,786
Portion at Fair Value Measurement [Member] | Available-for-sale Securities [Member] | Fixed Maturities [Member] |
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] |
Cost | 56,965
Fair Value | 59,196
Amount which shown on Balance Sheet | $ 59,196

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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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