Investments (Schedule Of Impaired Mortgage Loans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014 item	Dec. 31, 2013 item	Dec. 31, 2012	Dec. 31, 2011
Information about impaired mortgage loans on real estate
Number of impaired mortgage loans on real estate	3	3
Principal balance of impaired mortgage loans on real estate	$ 26	$ 27
Valuation allowance associated with impaired mortgage loans on real estate	(3)	(3)	(21)	(31)
Carrying value of impaired mortgage loans on real estate	23	24
Average carrying value for impaired loans on real estate	24	34	51
Interest income recognized on impaired mortgage loans on real estate	2	2	1
Interest income collected on impaired mortgage loans on real estate	$ 2	$ 2	$ 1

Average carrying value for impaired loans on real estate.

No definition available.

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- Definition

Carrying value of impaired mortgage loans on real estate.

+ References

No definition available.

+ Details

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- Definition

Principal balance of impaired mortgage loans on real estate as of the balance sheet date.

+ References

No definition available.

+ Details

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- Details

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- Definition

Interest income collected on impaired mortgage loans on real estate.

+ References

No definition available.

+ Details

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- Definition

Interest income recognized on impaired mortgage loans on real estate.

+ References

No definition available.

+ Details

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- Definition

Total number of impaired mortgage loans on real estate as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6873192&loc=d3e21338-158488

+ Details

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Period Type:	instant