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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	$ 9,413	$ 2,126	$ 6,441	$ 5,141
Items Included in Net Income	(15)	2,541	1,811	(382)
Gains (Losses) in OCI and Other	(84)	200	(131)	282
Issuances, Sales, Maturities, Settlements, Calls, Net	252	(644)	761	(847)
Transfers Into or Out of Level 3, Net	(4,493)	(327)	(3,809)	(298)
Ending Fair Value	5,073	3,896	5,073	3,896
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	5,429	4,344	5,121	4,281
Items Included in Net Income	1	(7)	4	(7)
Gains (Losses) in OCI and Other	(88)	197	(139)	17
Issuances, Sales, Maturities, Settlements, Calls, Net	55	30	440	181
Transfers Into or Out of Level 3, Net	(25)	(12)	(54)	80
Ending Fair Value	5,372	4,552	5,372	4,552
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		5	5	5
Issuances, Sales, Maturities, Settlements, Calls, Net			(5)
Transfers Into or Out of Level 3, Net		(5)		(5)
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	43	86	74	90
Items Included in Net Income
Gains (Losses) in OCI and Other	(3)		(11)	(4)
Issuances, Sales, Maturities, Settlements, Calls, Net	66	(20)	80	(20)
Transfers Into or Out of Level 3, Net			(37)
Ending Fair Value	106	66	106	66
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	2	2	11
Items Included in Net Income			(1)
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net
Transfers Into or Out of Level 3, Net				(9)
Ending Fair Value	1	2	1	2
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	9	1		1
Items Included in Net Income			1
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net			8
Transfers Into or Out of Level 3, Net	(8)		(8)
Ending Fair Value	1	1	1	1
ABS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	630	424	570	268
Items Included in Net Income			1
Gains (Losses) in OCI and Other	(2)	2	(5)	3
Issuances, Sales, Maturities, Settlements, Calls, Net	144	60	426	318
Transfers Into or Out of Level 3, Net	(38)	(73)	(258)	(176)
Ending Fair Value	734	413	734	413
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	102	90	104	78
Items Included in Net Income
Gains (Losses) in OCI and Other	6	1	18	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	(27)	14	(41)	10
Transfers Into or Out of Level 3, Net				18
Ending Fair Value	81	105	81	105
Mortgage Loans On Real Estate [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	818		832
Items Included in Net Income	4		11
Gains (Losses) in OCI and Other	3		6
Issuances, Sales, Maturities, Settlements, Calls, Net	(33)		(57)
Transfers Into or Out of Level 3, Net
Ending Fair Value	792		792
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	630	673	644	666
Items Included in Net Income	3	3	2	(1)
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net	(33)	(120)	(31)	(140)
Transfers Into or Out of Level 3, Net		(21)	(15)	10
Ending Fair Value	600	535	600	535
Equity Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	82	29	59	30
Items Included in Net Income	5	2	31	1
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net		20	(3)	20
Transfers Into or Out of Level 3, Net
Ending Fair Value	87	51	87	51
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	595	1,542	868
Items Included in Net Income		958	1,249	555
Gains (Losses) in OCI and Other				267
Issuances, Sales, Maturities, Settlements, Calls, Net		(189)	(132)	(326)
Transfers Into or Out of Level 3, Net		(216)	(2,658)	(216)
Ending Fair Value	1	1,148	1	1,148
GLB Direct Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1,767		450	450
Items Included in Net Income	(69)		1,248	(450)
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net
Transfers Into or Out of Level 3, Net
Ending Fair Value	1,698		1,698
GLB Direct Embedded Derivatives [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(152)	(3,086)
Items Included in Net Income	6	1,980	(146)	(1,106)
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net
Transfers Into or Out of Level 3, Net
Ending Fair Value	(146)	(1,106)	(146)	(1,106)
GLB Ceded Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	53	571	82	60
Items Included in Net Income	2	(290)	(27)	221
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net
Transfers Into or Out of Level 3, Net
Ending Fair Value	55	281	55	281
GLB Ceded Embedded Derivatives [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value				(9)
Items Included in Net Income				9
Indexed Annuity Ceded Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		664	550	927
Items Included in Net Income	(14)	295	17	484
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net	(6)	(423)	(60)	(875)
Transfers Into or Out of Level 3, Net	515		(12)
Ending Fair Value	495	536	495	536
Indexed Annuity And IUL Contracts [Member] | Future Contract Benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		(2,272)	(3,594)	(2,585)
Items Included in Net Income	47	(400)	(579)	(88)
Gains (Losses) in OCI and Other
Issuances, Sales, Maturities, Settlements, Calls, Net	86	(16)	136	(15)
Transfers Into or Out of Level 3, Net	(4,937)		(767)
Ending Fair Value	$ (4,804)	$ (2,688)	$ (4,804)	$ (2,688)