Income Tax (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amounts due from affiliates per tax sharing agreement	$ (24)		$ (14)
Amounts due to affiliates per tax sharing agreement		157
Federal statutory tax rate	35.00%
Income tax benefit related to the separate account dividends received deduction	92	53
True-up of the prior year tax return included in current year benefit related to the separate account dividends received deduction	16	(7)
Balance Sheet Reclassification With Other Deferred Tax Assets [Member]
Valuation allowance, change during year	$ 50