Federal Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Dividends-received deduction	$ 145	$ 128	$ 135
Net operating loss carryforwards	78
Net Operating Loss Carryforward Beginning Expiration Date	2031
Tax Credit Carryforward, Amount	82
Tax Credit Carryforward Beginning Expiration Date	2030
Unrecognized tax benefits, that, if recognized, would impact income tax expense and effective tax rate	74	69
Recognized interest and penalty expense related to uncertain tax positions	2	(61)	6
Accrued interest and penalty expense related to unrecognized tax benefits	13	11
Alternative Minimum [Member]
Tax Credit Carryforward, Amount	$ 119