Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Assets
Fixed maturity AFS securities	$ 100,890	$ 99,736
Trading securities	2,943	3,498
Equity securities	403	427
Mortgage loans on real estate	18,460	18,301
Derivative investments	5,155	3,594
Other investments	4,195	3,739
MRB assets	3,906	2,807
Policy account balances:
MRB liabilities	(1,548)	(2,078)
Carrying Value [Member]
Assets
Trading securities	2,943	3,498
Equity securities	403	427
Mortgage loans on real estate	18,460	18,301
Derivative investments	5,155	3,594
Other investments	4,193	3,739
Cash and invested cash	3,768	3,343
MRB assets	3,906	2,807
Ceded MRBs	2	12
Reinsurance related embedded derivatives	368	416
Indexed annuity ceded embedded derivatives	603	525
Reinsurance related embedded derivatives	368	416
Separate account assets	153,246	143,536
Policy account balances:
Account values of certain investment contracts	(43,457)	(43,578)
Indexed annuity and IUL contracts embedded derivatives	(7,510)	(4,783)
MRB liabilities	(1,548)	(2,078)
Short-term debt	(500)	(500)
Long-term debt	(5,954)	(5,955)
Ceded MRBs	(293)	(205)
Other liabilities - derivative liabilities	(372)	(210)
Remaining guaranteed interest and similar contracts	(482)	(574)
Fair Value [Member]
Assets
Trading securities	2,943	3,498
Equity securities	403	427
Mortgage loans on real estate	16,810	16,553
Derivative investments	5,155	3,594
Other investments	4,193	3,739
Cash and invested cash	3,768	3,343
MRB assets	3,906	2,807
Ceded MRBs	2	12
Reinsurance related embedded derivatives	368	416
Indexed annuity ceded embedded derivatives	603	525
Reinsurance related embedded derivatives	368	416
Separate account assets	153,246	143,536
Policy account balances:
Account values of certain investment contracts	(32,106)	(34,274)
Indexed annuity and IUL contracts embedded derivatives	(7,510)	(4,783)
MRB liabilities	(1,548)	(2,078)
Short-term debt	(497)	(496)
Long-term debt	(4,830)	(5,005)
Ceded MRBs	(293)	(205)
Other liabilities - derivative liabilities	(372)	(210)
Remaining guaranteed interest and similar contracts	(482)	(574)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	100,890	99,736
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	$ 100,890	$ 99,736