Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		$ 389	$ 2,803	$ 1,799	$ 2,547
Items Included in Net Income		367	(1,001)	(1,134)	(730)
Gains (Losses) in OCI and Other	[1]	11	18	245	(137)
Issuances, Sales, Maturities, Settlements, Calls, Net		29	77	256	105
Transfers In or Out of Level 3, Net	[2]	21	(60)	(349)	52
Ending Fair Value		817	1,837	817	1,837
Corporate bonds [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	2,425	2,039	1,993	1,953
Items Included in Net Income	[3]	(1)	3	(1)	6
Gains (Losses) in OCI and Other	[1],[3]	15	(34)	79	(123)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	(74)	60	72	150
Transfers In or Out of Level 3, Net	[2],[3]	66	(66)	288	16
Ending Fair Value	[3]	2,431	2,002	2,431	2,002
ABS [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	62	33	45	33
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]			(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]		13	14	13
Transfers In or Out of Level 3, Net	[2],[3]	(27)		(23)
Ending Fair Value	[3]	35	46	35	46
U.S. government bonds [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	10
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	(2)		8
Ending Fair Value	[3]	8		8
Foreign government bonds [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	112	114	111	109
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]	1	(3)	2	2
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]
Transfers In or Out of Level 3, Net	[2],[3]		4		4
Ending Fair Value	[3]	113	115	113	115
RMBS [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	16	1	1	1
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	51		66
Transfers In or Out of Level 3, Net	[2],[3]	(13)		(13)
Ending Fair Value	[3]	54	1	54	1
CMBS [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	8	12	10	15
Items Included in Net Income	[3]		1	2	3
Gains (Losses) in OCI and Other	[1],[3]		2	(1)	6
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	30	(4)	27	(13)
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	38	11	38	11
CLOs [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	45	461	551	368
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]	(1)	1	1	4
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	35	15	113	117
Transfers In or Out of Level 3, Net	[2],[3]	(5)		(591)	(12)
Ending Fair Value	[3]	74	477	74	477
Hybrid and redeemable preferred securities [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	89	96	94	55
Items Included in Net Income	[3]				(1)
Gains (Losses) in OCI and Other	[1],[3]	(1)	(2)	(6)	(3)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]
Transfers In or Out of Level 3, Net	[2],[3]				43
Ending Fair Value	[3]	88	94	88	94
Equity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	170	141	164	157
Items Included in Net Income	[3]	3	1	3	2
Gains (Losses) in OCI and Other	[1],[3]	(6)		(4)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	(4)	19		3
Transfers In or Out of Level 3, Net	[2],[3]				(1)
Ending Fair Value	[3]	163	161	163	161
Trading securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	65	72	73	73
Items Included in Net Income	[3]	1	1	3	2
Gains (Losses) in OCI and Other	[1],[3]	4	1	5	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	6		5
Transfers In or Out of Level 3, Net	[2],[3]		2	(10)	2
Ending Fair Value	[3]	76	76	76	76
Derivative investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	423	740	555	989
Items Included in Net Income	[3]	(89)	158	(346)	185
Gains (Losses) in OCI and Other	[1],[3]	(1)	53	170	(22)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	(69)	(52)	(115)	(253)
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	264	899	264	899
Other investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3],[4]	1
Items Included in Net Income	[3],[4]			1
Ending Fair Value	[3],[4]	1		1
Reinsurance recoverable [Member] | Other assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	539	102	268	154
Items Included in Net Income	[5]	(65)	192	206	140
Ending Fair Value	[5]	474	294	474	294
Indexed annuity and IUL contracts embedded derivatives [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	(1,102)	(1,155)	(1,100)	(1,170)
Items Included in Net Income	[5]	(64)	86	(76)	39
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	41	26	51	88
Transfers In or Out of Level 3, Net	[2],[5]
Ending Fair Value	[5]	(1,125)	(1,043)	(1,125)	(1,043)
VIEs' liabilities - derivative instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]		(3)	(4)	(13)
Items Included in Net Income	[4]		1	4	11
Ending Fair Value	[4]		(2)		(2)
Credit default swaps [Member] | Other liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	(16)	(2)	(9)	(3)
Items Included in Net Income	[4]	1	(5)	(6)	(4)
Gains (Losses) in OCI and Other	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]	15		15
Transfers In or Out of Level 3, Net	[2],[4]
Ending Fair Value	[4]		(7)		(7)
GLB reserves embedded derivatives [Member] | Other assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]		254
Items Included in Net Income	[5]		(254)
GLB reserves embedded derivatives [Member] | Other liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	(2,458)	(102)	(953)	(174)
Items Included in Net Income	[5]	581	(1,185)	(924)	(1,113)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]
Transfers In or Out of Level 3, Net	[2],[5]
Ending Fair Value	[5]	$ (1,877)	$ (1,287)	$ (1,877)	$ (1,287)

[1] The changes in fair value of the interest rate swaps are offset by an adjustment to derivative investments (see Note 5).

[2] Transfers into or out of Level 3 for AFS and trading securities are displayed at amortized cost as of the beginning-of-period. For AFS and trading securities, the difference between beginning-of-period amortized cost and beginning-of-period fair value was included in OCI and earnings, respectively, in the prior period.

[3] Amortization and accretion of premiums and discounts are included in net investment income on our Consolidated Statements of Comprehensive Income (Loss). Gains (losses) from sales, maturities, settlements and calls and OTTI are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[4] The changes in fair value of the credit default swaps and contingency forwards are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

[5] Gains (losses) from sales, maturities, settlements and calls are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).