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Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Assets
Fixed maturity AFS securities	$ 99,736	$ 97,572	$ 103,317	$ 110,663	$ 118,711	$ 122,085	$ 122,215	$ 117,313
Trading securities	3,498	3,580	3,803	4,364	4,460	4,170	4,211	4,344
Equity securities	427	427	411	399	375	264	195	144
Mortgage loans on real estate	18,301	18,066	17,922	17,892	17,991	17,730	17,586	17,255
Derivative investments	3,594	3,455	3,167	4,573	5,697	5,075	4,730	3,482
Other investments	3,739	$ 3,813	$ 4,078	$ 4,122	4,288	$ 4,066	$ 3,948	$ 3,547
Other contract holder funds:
Benefit Plans' Assets	1,197				1,734
Carrying Value [Member]
Assets
Trading securities	3,498				4,460
Equity securities	427				375
Mortgage loans on real estate	18,301				17,991
Derivative investments	3,594				5,697
Other investments	3,739				4,279
Cash and invested cash	3,343				2,612
Reinsurance related embedded derivatives	416
Other assets - GLB embedded derivatives	1,697				1,967
Other assets - GLB ceded embedded derivatives	29				56
Indexed annuity ceded embedded derivatives	525				528
Reinsurance related embedded derivatives	416
Separate account assets	143,536				182,583
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,686)				(1,788)
Account values of certain investment contracts	(43,573)				(41,194)
Short-term debt	(500)				(300)
Long-term debt	(5,955)				(6,325)
Reinsurance related embedded derivatives					(206)
Fair Value [Member]
Assets
Trading securities	3,498				4,460
Equity securities	427				375
Mortgage loans on real estate	16,553				18,700
Derivative investments	3,594				5,697
Other investments	3,739				4,279
Cash and invested cash	3,343				2,612
Reinsurance related embedded derivatives	416
Other assets - GLB embedded derivatives	1,697				1,967
Other assets - GLB ceded embedded derivatives	29				56
Indexed annuity ceded embedded derivatives	525				528
Reinsurance related embedded derivatives	416
Separate account assets	143,536				182,583
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(1,686)				(1,788)
Account values of certain investment contracts	(34,268)				(47,862)
Short-term debt	(496)				(302)
Long-term debt	(5,005)				(6,707)
Reinsurance related embedded derivatives					(206)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
Assets
Fixed maturity AFS securities	99,736				118,711
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
Assets
Fixed maturity AFS securities	99,736				118,711
Future Contract Benefits [Member] | Carrying Value [Member]
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(4,783)				(6,131)
Future Contract Benefits [Member] | Fair Value [Member]
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives	(4,783)				(6,131)
Other Liabilities [Member] | Carrying Value [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	$ (210)				$ (709)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities				Other liabilities
Other Liabilities [Member] | Fair Value [Member]
Other contract holder funds:
Other liabilities - derivative liabilities	$ (210)				$ (709)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities				Other liabilities
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member]
Other contract holder funds:
Other liabilities - GLB embedded derivatives	$ (167)				$ (182)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Fair Value [Member]
Other contract holder funds:
Other liabilities - GLB embedded derivatives	$ (167)				$ (182)

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