Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2023	Dec. 31, 2022
Assets
Fixed maturity AFS securities	$ 101,936	$ 99,736
Trading securities	3,266	3,498
Equity securities	414	427
Mortgage loans on real estate	18,327	18,301
Derivative investments	4,005	3,594
Other investments	3,892	3,739
MRB assets	3,445	2,807
Policy account balances:
MRB liabilities	(1,976)	(2,078)
Carrying Value [Member]
Assets
Trading securities	3,266	3,498
Equity securities	414	427
Mortgage loans on real estate	18,327	18,301
Derivative investments	4,005	3,594
Other investments	3,892	3,739
Cash and invested cash	3,766	3,343
MRB assets	3,445	2,807
Ceded MRBs	6	12
Reinsurance related embedded derivatives	367	416
Reinsurance related embedded derivatives	367	416
Separate account assets	148,421	143,536
Policy account balances:
Account values of certain investment contracts	(44,184)	(43,578)
Indexed annuity and IUL contracts embedded derivatives	(5,796)	(4,783)
MRB liabilities	(1,976)	(2,078)
Short-term debt	(500)	(500)
Long-term debt	(5,974)	(5,955)
Ceded MRBs	(252)	(205)
Other liabilities - derivative liabilities	(112)	(210)
Remaining guaranteed interest and similar contracts	(532)	(574)
Fair Value [Member]
Assets
Trading securities	3,266	3,498
Equity securities	414	427
Mortgage loans on real estate	16,967	16,553
Derivative investments	4,005	3,594
Other investments	3,892	3,739
Cash and invested cash	3,766	3,343
MRB assets	3,445	2,807
Ceded MRBs	6	12
Reinsurance related embedded derivatives	367	416
Reinsurance related embedded derivatives	367	416
Separate account assets	148,421	143,536
Policy account balances:
Account values of certain investment contracts	(32,790)	(34,274)
Indexed annuity and IUL contracts embedded derivatives	(5,796)	(4,783)
MRB liabilities	(1,976)	(2,078)
Short-term debt	(498)	(496)
Long-term debt	(4,880)	(5,005)
Ceded MRBs	(252)	(205)
Other liabilities - derivative liabilities	(112)	(210)
Remaining guaranteed interest and similar contracts	(532)	(574)
Fixed Maturity AFS Securities [Member] \| Carrying Value [Member]
Assets
Fixed maturity AFS securities	101,936	99,736
Fixed Maturity AFS Securities [Member] \| Fair Value [Member]
Assets
Fixed maturity AFS securities	101,936	99,736
Other Assets [Member] \| Carrying Value [Member]
Assets
Indexed annuity ceded embedded derivatives	305	525
Other Assets [Member] \| Fair Value [Member]
Assets
Indexed annuity ceded embedded derivatives	$ 305	$ 525

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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