Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2019		Jun. 30, 2018		Jun. 30, 2019		Jun. 30, 2018
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		$ 4,040		$ 3,505		$ 4,014		$ 3,139
Items Included in Net Income		(407)		(55)		(744)		486
Gains (Losses) in OCI and Other	[1]	97		(162)		217		(167)
Issuances, Sales, Maturities, Settlements, Calls, Net		801		258	[2]	1,210		320	[2]
Transfers Into or Out of Level 3, Net	[3]	(273)		(70)		(439)		(302)	[4]
Ending Fair Value		4,258		3,476		4,258		3,476
Corporate Bonds [Member] | Liberty Transaction [Member]
Level 3 Unobservable Input Reconciliation
Issuances, Sales, Maturities, Settlements, Calls, Net								67
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	3,521		3,192		3,269		3,091
Items Included in Net Income	[5]	1		3				6
Gains (Losses) in OCI and Other	[1],[5]	24		(124)		94		(107)
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	171		157	[2]	371		231	[2]
Transfers Into or Out of Level 3, Net	[3],[5]	(69)		(47)		(86)		(40)	[4]
Ending Fair Value	[5]	3,648		3,181		3,648		3,181
ABS [Member] | Liberty Transaction [Member]
Level 3 Unobservable Input Reconciliation
Issuances, Sales, Maturities, Settlements, Calls, Net								17
ABS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	81		26		29		27
Items Included in Net Income	[5]
Gains (Losses) in OCI and Other	[1],[5]	1				1		(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	152		5	[2]	204		5	[2]
Transfers Into or Out of Level 3, Net	[3],[5]	(21)				(21)
Ending Fair Value	[5]	213		31		213		31
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	[2],[5]			(5)				(5)
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	110		108		109		110
Items Included in Net Income	[5]
Gains (Losses) in OCI and Other	[1],[5]	3				4		(2)
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]
Transfers Into or Out of Level 3, Net	[3],[5]
Ending Fair Value	[5]	113		108		113		108
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]					7		12
Transfers Into or Out of Level 3, Net	[3],[5]					(7)		(12)	[4]
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	2		27		2		6
Items Included in Net Income	[5]							1
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]			(1)	[2]			19	[2]
Transfers Into or Out of Level 3, Net	[3],[5]			(21)				(21)	[4]
Ending Fair Value	[5]	2		5		2		5
CLOs [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	97		2		105		91
Items Included in Net Income	[5]
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	107		145	[2]	204		147	[2]
Transfers Into or Out of Level 3, Net	[3],[5]	(97)		(2)		(202)		(93)	[4]
Ending Fair Value	[5]	107		145		107		145
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	78		77		75		76
Items Included in Net Income	[5]
Gains (Losses) in OCI and Other	[1],[5]			1		3		2
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]
Transfers Into or Out of Level 3, Net	[3],[5]
Ending Fair Value	[5]	78		78		78		78
Equity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]							162
Transfers Into or Out of Level 3, Net	[3],[4],[5]							(162)
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		236	[5]	47	[5]	67	[5]	49
Items Included in Net Income		2	[5]	(3)	[5]	2	[5]	(5)
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net		371	[5]	(22)	[2],[5]	577	[5]	(22)	[2]
Transfers Into or Out of Level 3, Net	[3],[5]	(86)				(123)
Ending Fair Value	[5]	523		22		523		22
Equity Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	25		27		25
Items Included in Net Income	[5]
Gains (Losses) in OCI and Other	[1],[5]
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	43		(1)	[2]	43
Transfers Into or Out of Level 3, Net	[3]		[5]					26	[4]
Ending Fair Value	[5]	68		26		68		26
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		267	[5]	279	[5]	534	[5]	30
Items Included in Net Income		71	[5]	(108)	[5]	(312)	[5]	222
Gains (Losses) in OCI and Other	[1]	69	[5]	(39)	[5]	115	[5]	(59)
Issuances, Sales, Maturities, Settlements, Calls, Net		59	[5]	(39)	[2],[5]	129	[5]	(100)	[2]
Transfers Into or Out of Level 3, Net	[3],[5]
Ending Fair Value	[5]	466		93		466		93
GLB Direct Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	439		1,110		123		903
Items Included in Net Income	[6]	(439)		138		(123)		345
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]
Transfers Into or Out of Level 3, Net	[3],[6]
Ending Fair Value	[6]			1,248				1,248
GLB Direct Embedded Derivatives [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Items Included in Net Income	[6]	(1)				(1)
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]
Transfers Into or Out of Level 3, Net	[3],[6]
Ending Fair Value	[6]	(1)				(1)
GLB Ceded Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	50		45		72		51
Items Included in Net Income	[6]	61		(4)		39		(10)
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]
Transfers Into or Out of Level 3, Net	[3],[6]
Ending Fair Value	[6]	111		41		111		41
GLB Ceded Embedded Derivatives [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	(8)		(111)				(67)
Items Included in Net Income	[6]	8		(20)				(64)
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]
Transfers Into or Out of Level 3, Net	[3],[6]
Ending Fair Value	[6]			(131)				(131)
Indexed Annuity And IUL Contracts [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	872		17		902		11
Items Included in Net Income	[6]	44		1		121		1
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]	(13)		11	[2]	(120)		17	[2]
Transfers Into or Out of Level 3, Net	[3],[6]
Ending Fair Value	[6]	903		29		903		29
Indexed Annuity And IUL Contracts [Member] | Future Contract Benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[6]	(1,730)		(1,346)		(1,305)		(1,418)
Items Included in Net Income	[6]	(154)		(62)		(470)		(10)
Gains (Losses) in OCI and Other	[1],[6]
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]	(89)		8	[2]	(198)		28	[2]
Transfers Into or Out of Level 3, Net	[3],[6]
Ending Fair Value	[6]	$ (1,973)		$ (1,400)		$ (1,973)		$ (1,400)

[1] The changes in fair value of the interest rate swaps are offset by an adjustment to derivative investments (see Note 6).⁽²⁾I

[2] Issuances, sales, maturities, settlements, calls, net, includes financial instruments acquired in the Liberty Life transaction as follows: corporate bonds of $67 million and asset-backed securities of $17 million.

[3] Transfers into or out of Level 3 for AFS and trading securities are reported at amortized cost as of the beginning-of-year. 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.

[4] Transfers into or out of Level 3 for FHLB stock between equity securities and other investments are reported at cost on our Consolidated Balance Sheets.

[5] 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).

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