Policyholder Account Balances (Summary Of Balances And Changes In Policyholder Account Balances) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Policyholder Account Balance [Line Items]
Balance as of beginning-of-year			$ 114,435
Interest credited	$ 831	$ 726	2,424	$ 2,133
Balance as of end-of-period	117,210		117,210		$ 114,435
Reinsurance recoverables, net of allowance for credit losses	18,389		18,389		19,443
Variable Annuities [Member]
Policyholder Account Balance [Line Items]
Balance as of beginning-of-year			22,184	19,148	19,148
Gross deposits			3,626		5,178
Withdrawals			(508)		(417)
Policyholder assessments			(1)		(2)
Net transfers from (to) separate account			(311)		(492)
Interest credited			391		287
Change in fair value of embedded derivative instrument			1,391		(1,518)
Balance as of end-of-period	$ 26,772		$ 26,772		$ 22,184
Weighted-average crediting rate	2.10%		2.10%		1.40%
Net amount at risk			$ 6,235		$ 7,974
Cash surrender value			25,629		21,147
Fixed Annuities [Member]
Policyholder Account Balance [Line Items]
Balance as of beginning-of-year			23,365	22,552	22,552
Gross deposits			2,698		3,284
Withdrawals			(2,863)		(2,514)
Policyholder assessments			(41)		(51)
Interest credited			470		532
Change in fair value of embedded derivative instrument			52		(438)
Balance as of end-of-period	$ 23,681		$ 23,681		$ 23,365
Weighted-average crediting rate	2.60%		2.60%		2.40%
Net amount at risk			$ 188		$ 171
Cash surrender value			22,779		22,529
UL and Other [Member]
Policyholder Account Balance [Line Items]
Balance as of beginning-of-year			37,694	38,200	38,200
Gross deposits			2,749		3,921
Withdrawals			(1,095)		(1,244)
Policyholder assessments			(3,373)		(4,496)
Net transfers from (to) separate account			90		2
Interest credited			1,114		1,494
Change in fair value of embedded derivative instrument			38		(183)
Balance as of end-of-period	$ 37,217		$ 37,217		$ 37,694
Weighted-average crediting rate	4.00%		4.00%		3.90%
Net amount at risk			$ 303,628		$ 304,348
Cash surrender value			33,741		34,210
Retirement Plan Services [Member]
Policyholder Account Balance [Line Items]
Balance as of beginning-of-year			25,138	$ 23,579	23,579
Gross deposits			2,026		4,012
Withdrawals			(3,262)		(3,579)
Policyholder assessments			(10)		(13)
Net transfers from (to) separate account			(297)		510
Interest credited			504		629
Balance as of end-of-period	$ 24,099		$ 24,099		$ 25,138
Weighted-average crediting rate	2.70%		2.70%		2.60%
Net amount at risk			$ 9		$ 15
Cash surrender value			$ 24,094		$ 25,133