Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Assets
Fixed maturity AFS securities	$ 104,170	$ 99,465
Trading securities	3,217	3,446
Equity securities	414	427
Mortgage loans on real estate	18,237	18,211
Derivative investments	3,988	3,519
Other investments	3,718	3,577
Market Risk Benefit, Asset, Amount	3,445	2,807
Liabilities
MRBs liabilities	(1,976)	(2,078)
Carrying Value [Member]
Assets
Trading securities	3,217	3,446
Equity securities	414	427
Mortgage loans on real estate	18,237	18,211
Derivative investments	3,988	3,519
Other investments	3,718	3,577
Cash and invested cash	2,752	2,499
Market Risk Benefit, Asset, Amount	3,445	2,807
Ceded MRBs	699	540
Reinsurance related embedded derivatives	614	681
Liabilities
Account balances of certain investment contracts	(44,157)	(43,550)
Indexed annuity and IUL contracts embedded derivatives	(5,796)	(4,783)
MRBs liabilities	(1,976)	(2,078)
Short-term debt	(101)	(562)
Long-term debt	(2,247)	(2,269)
Remaining guaranteed interest and similar contracts	(532)	(574)
Fair Value [Member]
Assets
Trading securities	3,217	3,446
Equity securities	414	427
Mortgage loans on real estate	16,888	16,477
Derivative investments	3,988	3,519
Other investments	3,718	3,577
Cash and invested cash	2,752	2,499
Market Risk Benefit, Asset, Amount	3,445	2,807
Ceded MRBs	699	540
Reinsurance related embedded derivatives	614	681
Liabilities
Account balances of certain investment contracts	(32,767)	(34,251)
Indexed annuity and IUL contracts embedded derivatives	(5,796)	(4,783)
MRBs liabilities	(1,976)	(2,078)
Short-term debt	(101)	(562)
Long-term debt	(2,095)	(2,166)
Remaining guaranteed interest and similar contracts	(532)	(574)
Fixed Maturity AFS Securities [Member] \| Carrying Value [Member]
Assets
Fixed maturity AFS securities	104,170	99,465
Fixed Maturity AFS Securities [Member] \| Fair Value [Member]
Assets
Fixed maturity AFS securities	104,170	99,465
Other Assets [Member] \| Carrying Value [Member]
Assets
Indexed annuity ceded embedded derivatives	305	525
LPR ceded derivative	199	212
Separate account assets	148,421	143,536
Other Assets [Member] \| Fair Value [Member]
Assets
Indexed annuity ceded embedded derivatives	305	525
LPR ceded derivative	199	212
Separate account assets	148,421	143,536
Other Liabilities [Member] \| Carrying Value [Member]
Liabilities
Ceded MRBs	(909)	(246)
Other liabilities - derivative liabilities	(149)	(254)
Other Liabilities [Member] \| Fair Value [Member]
Liabilities
Ceded MRBs	(909)	(246)
Other liabilities - derivative liabilities	$ (149)	$ (254)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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