Below investment grade assets included in fixed income securities.

No definition available.

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- Definition

This element represents the fixed income securities that do not produce any income.

+ References

No definition available.

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No definition available.

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- Definition

This element represents the amount of municipal bonds as a percentage of total carrying value.

+ References

No definition available.

+ Details

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- Definition

The minimum percentage of municipal bonds to total carrying value that is used as a threshold for disclosure.

+ References

No definition available.

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- Definition

Interest earned on collateral received for loaned securities and invested in short-term investments and fixed income securities, net of fees.

+ References

No definition available.

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- Definition

Threshold percentage which the entity uses for disclosure.

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No definition available.

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- Definition

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 320
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=28366721&loc=d3e22002-158495

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- Definition

Amount of securities loaned to entities in exchange for collateral, not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226052-175313

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Investments (Details 15) - USD ($) $ in Millions	12 Months Ended
Investments (Details 15) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Municipal Bonds
Threshold percentage of municipal to total carrying value	5.00%
Securities loaned
Fixed income and equity securities loaned	$ 1,080	$ 798
Interest Income on collateral, net of fees	6	2	$ 2
Other investment information
Below investment grade assets	8,620	$ 8,640
Fixed income securities and short-term investments deposited with regulatory authorities	168
Non-income producing fixed income securities and other investments	$ 70
Shareholders' equity \| Concentration of credit risk \| Minimum
Municipal Bonds
Percentage of credit concentration risk of single issuer and affiliates of shareholder's equity	10.00%
Texas
Municipal Bonds
Percentage of municipal bonds carrying value	10.00%	9.20%
California
Municipal Bonds
Percentage of municipal bonds carrying value	7.20%	6.30%
New York
Municipal Bonds
Percentage of municipal bonds carrying value	6.80%	7.70%
Florida
Municipal Bonds
Percentage of municipal bonds carrying value	5.70%	5.60%
Washington
Municipal Bonds
Percentage of municipal bonds carrying value	5.60%	5.60%
Michigan
Municipal Bonds
Percentage of municipal bonds carrying value	5.40%	3.90%