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		$ 5,949		$ 4,754		$ 6,200		$ 4,509
Items Included in Net Income		(37)		(168)		(658)		216
Gains (Losses) in OCI and Other	[1]	97		(162)		216		(170)
Issuances, Sales, Maturities, Settlements, Calls, Net		824		306	[2]	1,241		396	[2]
Transfers Into or Out of Level 3, Net	[3]	(273)		(70)		(439)		(291)	[4]
Ending Fair Value		6,560		4,660		6,560		4,660
Corporate Bonds [Member] | Liberty Transaction [Member]
Level 3 Unobservable Input Reconciliation
Issuances, Sales, Maturities, Settlements, Calls, Net				67				67
Corporate Bonds [Member] | Fixed Maturity Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	5,911		5,485		5,652		5,350
Items Included in Net Income	[5]	1		3				6
Gains (Losses) in OCI and Other	[1],[5]	24		(124)		93		(106)
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	194		205	[2]	402		302	[2]
Transfers Into or Out of Level 3, Net	[3],[5]	(69)		(47)		(86)		(30)	[4]
Ending Fair Value	[5]	6,061		5,522		6,061		5,522
ABS [Member] | Liberty Transaction [Member]
Level 3 Unobservable Input Reconciliation
Issuances, Sales, Maturities, Settlements, Calls, Net				17				17
ABS [Member] | Fixed Maturity Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	81		26		29		26
Gains (Losses) in OCI and Other	[1],[5]	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 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 Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	110		108		109		110
Gains (Losses) in OCI and Other	[1],[5]	3				4		(2)
Ending Fair Value	[5]	113		108		113		108
RMBS [Member] | Fixed Maturity 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 Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	2		27		2		6
Items Included in Net Income	[5]							1
Issuances, Sales, Maturities, Settlements, Calls, Net	[2],[5]			(1)				19
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 Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	97		2		105		91
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]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]					75
Gains (Losses) in OCI and Other	[1],[5]					3
Ending Fair Value	[5]	78				78
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	78		77				76
Gains (Losses) in OCI and Other	[1],[5]			1				2
Ending Fair Value	[5]	78		78		78		78
Equity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]							161
Transfers Into or Out of Level 3, Net	[3],[4],[5]							(161)
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	236		47		67		49
Items Included in Net Income	[5]	2		(3)		2		(5)
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	371		(22)	[2]	577		(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		25	[5]	27		25	[5]
Issuances, Sales, Maturities, Settlements, Calls, Net		43	[5]	(1)	[2]	43	[5]
Transfers Into or Out of Level 3, Net	[3],[4],[5]							26
Ending Fair Value	[5]	68		26		68		26
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	[5]	267		279		533		30
Items Included in Net Income	[5]	71		(108)		(311)		222
Gains (Losses) in OCI and Other	[1],[5]	69		(39)		115		(64)
Issuances, Sales, Maturities, Settlements, Calls, Net	[5]	59		(39)	[2]	129		(95)	[2]
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
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)
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)
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]	(489)		(1,155)		(196)		(954)
Items Included in Net Income	[6]	378		(133)		85		(334)
Ending Fair Value	[6]	(111)		(1,288)		(111)		(1,288)
Indexed Annuity [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
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]	(13)		11	[2]	(120)		17	[2]
Ending Fair Value	[6]	903		29		903		29
Indexed Annuity [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)
Issuances, Sales, Maturities, Settlements, Calls, Net	[6]	(89)		8	[2]	(198)		28	[2]
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).