Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets
Fixed maturity AFS securities	$ 99,465	$ 117,511
Trading securities	3,446	4,427
Equity securities	427	314
Mortgage loans on real estate	18,211	17,893
Derivative investments	3,662	5,437
Other investments	3,577	3,449
Other contract holder funds:
Benefit Plans' Assets	86	116
Carrying Value [Member]
Assets
Trading securities	3,446	4,427
Equity securities	427	314
Mortgage loans on real estate	18,211	17,893
Derivative investments	3,662	5,437
Other investments	3,577	3,439
Cash and invested cash	2,499	2,331
Reinsurance related embedded derivatives	681
Indexed annuity ceded embedded derivatives	525	528
LPR ceded derivative	212	318
Separate account assets	143,536	182,583
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,686)	(1,788)
Account values of certain investment contracts	(43,545)	(41,164)
Short-term debt	(562)	(1,084)
Long-term debt	(2,269)	(2,334)
Reinsurance related embedded derivatives		(578)
Fair Value [Member]
Assets
Trading securities	3,446	4,427
Equity securities	427	314
Mortgage loans on real estate	16,477	18,599
Derivative investments	3,662	5,437
Other investments	3,577	3,439
Cash and invested cash	2,499	2,331
Reinsurance related embedded derivatives	681
Indexed annuity ceded embedded derivatives	525	528
LPR ceded derivative	212	318
Separate account assets	143,536	182,583
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,686)	(1,788)
Account values of certain investment contracts	(34,244)	(47,828)
Short-term debt	(562)	(1,084)
Long-term debt	(2,166)	(2,675)
Reinsurance related embedded derivatives		(578)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	99,465	117,511
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	99,465	117,511
GLB Direct Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	1,697	1,963
GLB Direct Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	1,697	1,963
GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	29	56
GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	29	56
Future Contract Benefits [Member] | Carrying Value [Member]
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(4,783)	(6,131)
Future Contract Benefits [Member] | Fair Value [Member]
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(4,783)	(6,131)
Other Liabilities [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	(222)
Other Liabilities [Member] | Carrying Value [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	(222)	(249)
Other Liabilities [Member] | Fair Value [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	(222)	(249)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Other contract holder funds:
Other liabilities - GLB embedded derivatives	(1,721)	(2,015)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Other contract holder funds:
Other liabilities - GLB embedded derivatives	$ (1,721)	$ (2,015)