Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets
Fixed maturity AFS securities	$ 100,387	$ 99,465
Trading securities	2,749	3,446
Equity securities	383	427
Mortgage loans on real estate	18,661	18,211
Derivative investments	5,454	3,519
Other investments	4,428	3,577
Market Risk Benefit, Asset, Amount	4,108	2,807
Liabilities
MRBs liabilities	(1,385)	(2,078)
Carrying Value [Member]
Assets
Trading securities	2,749	3,446
Equity securities	383	427
Mortgage loans on real estate	18,661	18,211
Derivative investments	5,454	3,519
Other investments	4,428	3,577
Cash and invested cash	2,285	2,499
Market Risk Benefit, Asset, Amount	4,108	2,807
Ceded MRBs	273	540
Reinsurance related embedded derivatives	933	681
Liabilities
Account balances of certain investment contracts	(43,068)	(43,550)
Indexed annuity and IUL contracts embedded derivatives	(7,174)	(4,783)
MRBs liabilities	(1,385)	(2,078)
Short-term debt	(497)	(562)
Long-term debt	(2,244)	(2,269)
Remaining guaranteed interest and similar contracts	(433)	(574)
Fair Value [Member]
Assets
Trading securities	2,749	3,446
Equity securities	383	427
Mortgage loans on real estate	16,553	16,477
Derivative investments	5,454	3,519
Other investments	4,428	3,577
Cash and invested cash	2,285	2,499
Market Risk Benefit, Asset, Amount	4,108	2,807
Ceded MRBs	273	540
Reinsurance related embedded derivatives	933	681
Liabilities
Account balances of certain investment contracts	(30,869)	(34,251)
Indexed annuity and IUL contracts embedded derivatives	(7,174)	(4,783)
MRBs liabilities	(1,385)	(2,078)
Short-term debt	(497)	(562)
Long-term debt	(2,114)	(2,166)
Remaining guaranteed interest and similar contracts	(433)	(574)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	100,387	99,465
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	100,387	99,465
Other Assets [Member] | Carrying Value [Member]
Assets
Indexed annuity ceded embedded derivatives	586	525
LPR ceded derivative	184	212
Separate account assets	145,810	143,536
Other Assets [Member] | Fair Value [Member]
Assets
Indexed annuity ceded embedded derivatives	586	525
LPR ceded derivative	184	212
Separate account assets	145,810	143,536
Other Liabilities [Member] | Carrying Value [Member]
Liabilities
Ceded MRBs	(1,736)	(246)
Other liabilities - derivative liabilities	(628)	(254)
Other Liabilities [Member] | Fair Value [Member]
Liabilities
Ceded MRBs	(1,736)	(246)
Other liabilities - derivative liabilities	$ (628)	$ (254)