Shares And Stockholders' Equity (Schedule of Reclassifications Out Of AOCI) (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
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	$ 35	$ (17)	$ 16	$ (76)
Net investment income	1,207	1,213	2,415	2,363
Interest and debt expense	67	65	134	129
Commissions and other expenses	963	898	1,934	1,792
Income (loss) from continuing operations before taxes	537	418	963	723
Federal income tax expense (benefit)	139	101	236	167
Net income (loss)	398	317	727	556
Unrealized Gain (Loss) On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			(9)	(39)
Federal income tax expense (benefit)			3	14
Net income (loss)			(6)	(25)
Unrealized OTTI On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			22	42
Federal income tax expense (benefit)			(6)	(15)
Net income (loss)			16	27
Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			(9)	(5)
Federal income tax expense (benefit)			3	2
Net income (loss)			(6)	(3)
Gross Reclassification [Member] | Unrealized Gain (Loss) On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			9	(27)
Gross Reclassification [Member] | Unrealized OTTI On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			25	47
Gross Reclassification [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating income expense			(10)	(6)
Gross Reclassification [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Interest Rate Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income			(12)	(10)
Interest and debt expense			2	2
Gross Reclassification [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Foreign Currency Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income				2
Change In DAC, VOBA, DSI, And DFEL [Member] | Unrealized Gain (Loss) On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			(18)	(12)
Change In DAC, VOBA, DSI, And DFEL [Member] | Unrealized OTTI On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			(3)	(5)
Change In DAC, VOBA, DSI, And DFEL [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Commissions and other expenses			$ 1	$ 1