Fair Value of Financial Instruments (Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Total, net	$ 579		$ (588)		$ 1,116		$ 121
Derivative Investments [Member]
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Change in unrealized gains (losses) included in realized gain (loss)	(4)	[1]	240	[1]	(251)	[1]	(332)	[1]
Indexed Annuity and Universal Life Contracts [Member]
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Change in unrealized gains (losses) included in realized gain (loss)	13	[1]	(3)	[1]	20	[1]	19	[1]
GLB Embedded Derivative Reserves [Member]
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Change in unrealized gains (losses) included in realized gain (loss)	557	[1]	(814)	[1]	1,318	[1]	369	[1]
VIE's Liabilities - Derivative Instruments [Member]
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Change in unrealized gains (losses) included in realized gain (loss)	11	[2]	(10)	[2]	27	[2]	60	[2]
Credit Default Swaps [Member]
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held
Change in unrealized gains (losses) included in investment income	$ 2		$ (1)		$ 2		$ 5

[1] Included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[2] Included in net investment income on our Consolidated Statements of Comprehensive Income (Loss).