Investments (Net Inv Inc summary) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Investment Income [Line Items]
Gross Investment Income	$ 331	$ 366	$ 672	$ 732
Less: investment expenses	8	7	16	15
Total	323	359	656	717
Total fixed maturities
Net Investment Income [Line Items]
Gross Investment Income	278	303	564	612
Mortgage Loans on Real Estate [Member]
Net Investment Income [Line Items]
Gross Investment Income	45	52	91	103
Other Investments [Member]
Net Investment Income [Line Items]
Gross Investment Income	$ 8	$ 11	$ 17	$ 17