Condensed Financial Information (Parent Company) (Condensed Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments:
Estimated Fair Value of Fixed Maturity Securities AFS	$ 281,043	$ 281,412
Short-term investments, principally at estimated fair value	5,156	6,045
Other invested assets, at estimated fair value	18,504	18,202
Total investments	441,364	446,137
Cash and cash equivalents	20,068	20,639
Accrued investment income	$ 3,489	$ 3,589
Investment, Issuer Affiliation [Extensible Enumeration]	Investment, Affiliated Issuer, Controlled [Member]	Investment, Affiliated Issuer, Controlled [Member]
Other assets	$ 11,082	$ 11,139
Total assets	677,457	687,584
Liabilities
Payables for collateral under derivatives transactions	$ 17,128	$ 17,524
Notes Payable, Related Party, Type [Extensible Enumeration]	Affiliated Entity	Affiliated Entity
Junior subordinated debt securities	$ 3,164	$ 3,161
Other liabilities	36,843	35,805
Total liabilities	649,754	657,331
Stockholders’ Equity
Preferred stock, par value $0.01 per share; $3,905 aggregate liquidation preference	0	0
Common stock, par value $0.01 per share; 3,000,000,000 shares authorized; 1,194,168,628 and 1,191,823,651 shares issued, respectively; 689,211,065 and 730,821,111 shares outstanding, respectively	12	12
Additional paid-in capital	33,791	33,690
Retained earnings	42,626	40,146
Treasury stock, at cost; 504,957,563 and 461,002,540 shares, respectively	(27,798)	(24,591)
Accumulated other comprehensive income (loss)	(21,186)	(19,242)
Total stockholders’ equity	27,445	30,015
Total liabilities and stockholders' equity	677,457	687,584
Parent Company
Investments:
Estimated Fair Value of Fixed Maturity Securities AFS	1,719	1,583
Short-term investments, principally at estimated fair value	653	52
Other invested assets, at estimated fair value	586	517
Total investments	2,958	2,152
Cash and cash equivalents	2,159	3,021	$ 1,290	$ 1,961
Accrued investment income	8	9
Investment in subsidiaries	41,107	43,838
Loans to subsidiaries	285	305
Other assets	654	667
Total assets	47,171	49,992
Liabilities
Payables for collateral under derivatives transactions	290	265
Long-term debt — unaffiliated	14,431	14,516
Long-term debt — affiliated	1,447	1,585
Junior subordinated debt securities	2,470	2,468
Other liabilities	1,088	1,143
Total liabilities	19,726	19,977
Stockholders’ Equity
Preferred stock, par value $0.01 per share; $3,905 aggregate liquidation preference	0	0
Common stock, par value $0.01 per share; 3,000,000,000 shares authorized; 1,194,168,628 and 1,191,823,651 shares issued, respectively; 689,211,065 and 730,821,111 shares outstanding, respectively	12	12
Additional paid-in capital	33,791	33,690
Retained earnings	42,626	40,146
Treasury stock, at cost; 504,957,563 and 461,002,540 shares, respectively	(27,798)	(24,591)
Accumulated other comprehensive income (loss)	(21,186)	(19,242)
Total stockholders’ equity	27,445	30,015
Total liabilities and stockholders' equity	$ 47,171	$ 49,992