SCHEDULE I - SUMMARY OF INVESTMENTS OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	$ 35,125
Amount at which shown in the Balance Sheet	37,466
United States government, government agencies and authorities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	668
Fair value	770
Amount at which shown in the Balance Sheet	770
States, municipalities and political subdivisions
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	3,156
Fair value	3,662
Amount at which shown in the Balance Sheet	3,662
Foreign government
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	654
Fair value	735
Amount at which shown in the Balance Sheet	735
Public utilities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	3,736
Fair value	4,235
Amount at which shown in the Balance Sheet	4,235
Convertibles and bonds with warrants attached
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	178
Fair value	156
Amount at which shown in the Balance Sheet	156
All other corporate bonds
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	15,551
Fair value	16,594
Amount at which shown in the Balance Sheet	16,594
Asset-backed securities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	773
Fair value	765
Amount at which shown in the Balance Sheet	765
Residential mortgage-backed securities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	554
Fair value	605
Amount at which shown in the Balance Sheet	605
CMBS
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	538
Fair value	579
Amount at which shown in the Balance Sheet	579
Redeemable preferred stock
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	14
Fair value	16
Amount at which shown in the Balance Sheet	16
Fixed income securities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	25,822
Fair value	28,117
Amount at which shown in the Balance Sheet	28,117
Public utilities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	24
Fair value	24
Amount at which shown in the Balance Sheet	24
Banks, trusts and insurance companies
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	177
Fair value	177
Amount at which shown in the Balance Sheet	177
Industrial, miscellaneous and all other
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	701
Fair value	743
Amount at which shown in the Balance Sheet	743
Nonredeemable preferred stocks
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	25
Fair value	26
Amount at which shown in the Balance Sheet	26
Equity securities
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	927
Fair value	970
Amount at which shown in the Balance Sheet	970
Mortgage loans on real estate
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	3,686
Fair value	3,922
Amount at which shown in the Balance Sheet	3,686
Real estate investment
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	32
Amount at which shown in the Balance Sheet	32
Real estate acquired in satisfaction of debt
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	19
Amount at which shown in the Balance Sheet	19
Policy loans
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	616
Amount at which shown in the Balance Sheet	616
Derivative instruments
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	87
Fair value	90
Amount at which shown in the Balance Sheet	90
Limited partnership interests
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	2,024
Amount at which shown in the Balance Sheet	2,024
Other long-term investments
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	1,074
Amount at which shown in the Balance Sheet	1,074
Short-term investments
Summary of Investments Other Than Investments in Related Parties
Cost/amortized cost	857
Fair value	857
Amount at which shown in the Balance Sheet	$ 857

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 15

-Article 12

Reference 2: 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=34726532&loc=d3e611379-123010

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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.

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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.

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