Investments (Average Carrying Value On The Impaired Mortgage Loans On Real Estate) (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
Information about impaired mortgage loans on real estate
Average carrying value for impaired loans on real estate	$ 24	$ 35	$ 24	$ 41
Interest income recognized on impaired mortgage loans on real estate			1	1
Interest income collected on impaired mortgage loans on real estate			$ 1	$ 1