Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Assets
Fixed maturity AFS securities	$ 103,365	$ 118,746
Trading securities	3,822	4,482
Equity securities	344	318
Mortgage loans on real estate	17,922	17,991
Derivative investments	3,370	5,437
Other investments	4,054	4,292
Carrying Value [Member]
Assets
Trading securities	3,822	4,482
Equity securities	344	318
Mortgage loans on real estate	17,922	17,991
Derivative investments	3,370	5,437
Other investments	4,044	4,284
Cash and invested cash	1,567	2,612
Indexed annuity ceded embedded derivatives	440	528
Separate account assets	145,791	182,583
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(3,366)	(6,131)
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,801)	(1,788)
Account values of certain investment contracts	(41,989)	(41,194)
Short-term debt		(300)
Long-term debt	(6,498)	(6,325)
Reinsurance related embedded derivatives		(206)
Other liabilities - derivative liabilities	(254)	(677)
Fair Value [Member]
Assets
Trading securities	3,822	4,482
Equity securities	344	318
Mortgage loans on real estate	16,988	18,700
Derivative investments	3,370	5,437
Other investments	4,044	4,284
Cash and invested cash	1,567	2,612
Indexed annuity ceded embedded derivatives	440	528
Separate account assets	145,791	182,583
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(3,366)	(6,131)
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,801)	(1,788)
Account values of certain investment contracts	(36,996)	(47,862)
Short-term debt		(302)
Long-term debt	(5,761)	(6,707)
Reinsurance related embedded derivatives		(206)
Other liabilities - derivative liabilities	(254)	(677)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	103,365	118,746
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	103,365	118,746
GLB Direct Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	1,400	1,963
GLB Direct Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	1,400	1,963
GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	41	56
Other contract holder funds:
Other liabilities - GLB embedded derivatives	(136)	(182)
GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	41	56
Other contract holder funds:
Other liabilities - GLB embedded derivatives	(136)	$ (182)
Reinsurance Related Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Reinsurance related embedded derivatives	305
Reinsurance Related Embedded Derivatives [Member] | Fair Value [Member]
Assets
Reinsurance related embedded derivatives	$ 305