Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		$ 1,799	$ 2,547
Items Included in Net Income		(1,221)	(447)
Gains (Losses) in OCI and Other	[1]	110	30
Issuances, Sales, Maturities, Settlements, Calls, Net		56	(20)
Transfers In or Out of Level 3, Net	[2]	139	99
Ending Fair Value		883	2,209
Corporate bonds [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	1,993	1,953
Items Included in Net Income	[3]	6	3
Gains (Losses) in OCI and Other	[1],[3]	18	(31)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	28	29
Transfers In or Out of Level 3, Net	[2],[3]	140	79
Ending Fair Value	[3]	2,185	2,033
ABS [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 45	$ 33
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]	$ (1)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 44	$ 33
Foreign government bonds [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 111	109
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]		4
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 111	113
RMBS [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 1	$ 1
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 1	$ 1
CMBS [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 10	15
Items Included in Net Income	[3]		1
Gains (Losses) in OCI and Other	[1],[3]		2
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	$ (1)	(3)
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 9	15
CLOs [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 551	368
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]	$ 2	3
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	$ 38	45
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 591	416
Hybrid and redeemable preferred securities [Member] | Fixed maturity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 94	55
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]	$ (2)
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]
Transfers In or Out of Level 3, Net	[2],[3]		20
Ending Fair Value	[3]	$ 92	75
Equity AFS securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	$ 164	157
Items Included in Net Income	[3]
Gains (Losses) in OCI and Other	[1],[3]	$ (1)	2
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	$ 4	(24)
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 167	135
Trading securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	73	73
Items Included in Net Income	[3]	1	1
Gains (Losses) in OCI and Other	[1],[3]	2	2
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	(1)	(1)
Transfers In or Out of Level 3, Net	[2],[3]	(1)
Ending Fair Value	[3]	74	75
Derivative investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[3]	555	989
Items Included in Net Income	[3]	(440)	(94)
Gains (Losses) in OCI and Other	[1],[3]	92	48
Issuances, Sales, Maturities, Settlements, Calls, Net	[3]	$ (17)	(94)
Transfers In or Out of Level 3, Net	[2],[3]
Ending Fair Value	[3]	$ 190	849
Other investments [Member]
Level 3 Unobservable Input Reconciliation
Items Included in Net Income	[4]	2
Ending Fair Value	[4]	2
Other assets - reinsurance recoverable [Member] | Other assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	268	154
Items Included in Net Income	[5]	165	50
Ending Fair Value	[5]	433	204
Indexed annuity and IUL contracts embedded derivatives [Member] | Future contract benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	(1,100)	(1,170)
Items Included in Net Income	[5]	$ 7	(38)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	$ 5	28
Transfers In or Out of Level 3, Net	[2],[5]
Ending Fair Value	[5]	$ (1,088)	(1,180)
VIEs' liabilities - derivative instruments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	(4)	(13)
Items Included in Net Income	[4]	$ 4	8
Gains (Losses) in OCI and Other	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]
Ending Fair Value	[4]		(5)
Credit default swaps [Member] | Other liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[4]	$ (9)	$ (3)
Items Included in Net Income	[4]	$ (3)
Gains (Losses) in OCI and Other	[1],[4]
Issuances, Sales, Maturities, Settlements, Calls, Net	[4]
Transfers In or Out of Level 3, Net	[2],[4]
Ending Fair Value	[4]	$ (12)	$ (3)
GLB reserves embedded derivatives [Member] | Other liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	(953)	(174)
Items Included in Net Income	[5]	$ (963)	(378)
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]	$ (1,916)	$ (552)

[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-year. For AFS and trading securities, the difference between beginning-of-year amortized cost and beginning-of-year 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).