Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Fixed maturity AFS securities	$ 117,511	$ 121,111
Trading securities	4,427	4,442
Equity securities	314	127
Mortgage loans on real estate	17,893	16,681
Derivative investments	5,437	3,109
Other investments	3,449	3,025
Other contract holder funds:
Benefit Plans' Assets	116	123
Carrying Value [Member]
Assets
Trading securities	4,427	4,442
Equity securities	314	127
Mortgage loans on real estate	17,893	16,681
Derivative investments	5,437	3,109
Other investments	3,439	3,015
Cash and invested cash	2,331	1,462
Indexed annuity ceded embedded derivatives	528	550
LPR ceded derivative	318
Separate account assets	182,583	167,965
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,788)	(1,854)
Account values of certain investment contracts	(41,164)	(40,917)
Short-term debt	(1,084)	(497)
Long-term debt	(2,334)	(2,412)
Reinsurance related embedded derivatives	(578)	(540)
Fair Value [Member]
Assets
Trading securities	4,427	4,442
Equity securities	314	127
Mortgage loans on real estate	18,599	18,129
Derivative investments	5,437	3,109
Other investments	3,439	3,015
Cash and invested cash	2,331	1,462
Indexed annuity ceded embedded derivatives	528	550
LPR ceded derivative	318
Separate account assets	182,583	167,965
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,788)	(1,854)
Account values of certain investment contracts	(47,828)	(49,709)
Short-term debt	(1,084)	(497)
Long-term debt	(2,675)	(2,834)
Reinsurance related embedded derivatives	(578)	(540)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	117,511	121,111
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	117,511	121,111
GLB Direct Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	1,963	450
GLB Direct Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	1,963	450
GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Assets
Other assets - GLB embedded derivatives	56	82
GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Assets
Other assets - GLB embedded derivatives	56	82
Future Contract Benefits [Member] | Carrying Value [Member]
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(6,131)	(3,594)
Future Contract Benefits [Member] | Fair Value [Member]
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(6,131)	(3,594)
Other Liabilities [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	(249)
Other Liabilities [Member] | Carrying Value [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	(249)	(353)
Other Liabilities [Member] | Fair Value [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	(249)	(353)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Other contract holder funds:
Other liabilities - GLB embedded derivatives	(2,015)	(531)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Other contract holder funds:
Other liabilities - GLB embedded derivatives	$ (2,015)	$ (531)