Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets
Fixed maturity AFS securities	$ 109,921	$ 117,511
Trading securities	4,334	4,427
Equity securities	340	314
Mortgage loans on real estate	17,795	17,893
Derivative investments	4,840	5,437
Other investments	3,527	3,449
Carrying Value [Member]
Assets
Trading securities	4,334	4,427
Equity securities	340	314
Mortgage loans on real estate	17,795	17,893
Derivative investments	4,840	5,437
Other investments	3,516	3,439
Cash and invested cash	1,722	2,331
Indexed annuity ceded embedded derivatives	493	528
Separate account assets	168,879	182,583
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(5,574)	(6,131)
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,815)	(1,788)
Account values of certain investment contracts	(41,247)	(41,164)
Short-term debt	(737)	(1,084)
Long-term debt	(2,311)	(2,334)
Reinsurance related embedded derivatives	(31)	(578)
Other liabilities - derivative liabilities	(181)	(249)
Fair Value [Member]
Assets
Trading securities	4,334	4,427
Equity securities	340	314
Mortgage loans on real estate	17,539	18,599
Derivative investments	4,840	5,437
Other investments	3,516	3,439
Cash and invested cash	1,722	2,331
Indexed annuity ceded embedded derivatives	493	528
Separate account assets	168,879	182,583
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(5,574)	(6,131)
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,815)	(1,788)
Account values of certain investment contracts	(41,722)	(47,828)
Short-term debt	(737)	(1,084)
Long-term debt	(2,470)	(2,675)
Reinsurance related embedded derivatives	(31)	(578)
Other liabilities - derivative liabilities	(181)	(249)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	109,921	117,511
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	109,921	117,511
GLB Direct Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	1,880	1,963
GLB Direct Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	1,880	1,963
GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	42	56
Other contract holder funds:
Other liabilities - GLB embedded derivatives	(1,917)	(2,015)
GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	42	56
Other contract holder funds:
Other liabilities - GLB embedded derivatives	(1,917)	(2,015)
LPR Ceded Derivative [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	266	318
LPR Ceded Derivative [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	$ 266	$ 318