Shares And Stockholders' Equity (Schedule of Reclassifications Out Of AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	$ 27	$ 89	$ (11)	$ 106
Net investment income	1,254	1,212	3,627	3,627
Interest and debt expense	67	67	204	201
Commissions and other expenses	1,432	995	3,459	2,929
Income (loss) from continuing operations before taxes	268	601	1,078	1,564
Federal income tax expense (benefit)	41	162	207	398
Net income (loss)	$ 227	$ 439	871	1,166
Unrealized Gain (Loss) On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			152	(15)
Federal income tax expense (benefit)			(53)	5
Net income (loss)			99	(10)
Unrealized OTTI On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			18	48
Federal income tax expense (benefit)			(6)	(17)
Net income (loss)			12	31
Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			(185)	(11)
Federal income tax expense (benefit)			65	4
Net income (loss)			(120)	(7)
Gross Reclassification [Member] | Unrealized Gain (Loss) On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			175	10
Gross Reclassification [Member] | Unrealized OTTI On AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			31	55
Gross Reclassification [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Nonoperating income expense			(187)	(12)
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			(193)	(19)
Interest and debt expense			1	3
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			5	4
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)			(23)	(25)
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)			(13)	(7)
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			$ 2	$ 1