Separate Accounts (Net Amount at Risk and Cash Surrender Values) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	$ 86,836		$ 77,474
Separate account liabilities	83,439	$ 81,690	76,602
Universal Life Insurance
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	2,011	1,980	1,972	$ 2,100
Separate account liabilities	2,509		2,070
Total account balances	4,520		4,042
Net amount at risk	21,213		22,618
Cash surrender value	4,324		3,826
Variable Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	3,773	4,111	4,275	4,664
Separate account liabilities	78,372	77,086	72,356	74,845
Total account balances	82,145		76,631
Net amount at risk	11,656		15,989
Cash surrender value	81,750		76,355
Index-linked Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	47,814	41,627	38,619	33,897
Separate account liabilities	0		0
Total account balances	47,814		38,619
Cash surrender value	46,076		36,164
Fixed Rate Annuities
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	14,883	14,672	14,811	14,274
Separate account liabilities	0		0
Total account balances	14,883		14,811
Cash surrender value	14,632		14,189
ULSG
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	4,848	5,052	5,125	5,307
Separate account liabilities	0		0
Total account balances	4,848		5,125
Net amount at risk	64,059		69,277
Cash surrender value	4,360		6,121
Company-Owned Life Insurance
Net Amount at Risk by Product and Guarantee [Line Items]
Policyholder Account Balance	667	653	650	641
Separate account liabilities	2,319	$ 2,148	2,023	$ 1,919
Total account balances	2,986		2,673
Net amount at risk	2,675		2,611
Cash surrender value	$ 2,761		$ 2,456