Segment Information - Significant Expense Categories (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Expenses:
Remeasurement (gains) losses of future policy benefit reserves	$ 10	$ (44)	$ (20)
Change in fair value of market risk benefits	1,004	628	798
Interest and debt expense	326	329	324
Advice & Wealth Management
Expenses:
Distribution expenses	6,513	5,823	4,888
Adjusted Policyholder Account Balance, Interest Expense	0	0	0
Benefits, claims, losses and settlement expenses	0	0	0
Remeasurement (gains) losses of future policy benefit reserves	0	0	0
Change in fair value of market risk benefits	0	0	0
Amortization of deferred acquisition costs	0	0	0
Interest and debt expense	55	38	27
General and administrative expense	1,762	1,686	1,652
Total expenses	8,330	7,547	6,567
Asset Management
Expenses:
Distribution expenses	1,005	989	925
Adjusted Policyholder Account Balance, Interest Expense	0	0	0
Benefits, claims, losses and settlement expenses	0	0	0
Remeasurement (gains) losses of future policy benefit reserves	0	0	0
Change in fair value of market risk benefits	0	0	0
Amortization of deferred acquisition costs	7	7	6
Interest and debt expense	12	7	7
General and administrative expense	1,581	1,592	1,620
Total expenses	2,605	2,595	2,558
Retirement & Protection Solutions
Expenses:
Distribution expenses	520	515	464
Adjusted Policyholder Account Balance, Interest Expense	373	367	369
Benefits, claims, losses and settlement expenses	913	927	744
Remeasurement (gains) losses of future policy benefit reserves	(24)	(36)	(19)
Change in fair value of market risk benefits	726	684	628
Amortization of deferred acquisition costs	229	227	229
Interest and debt expense	40	45	51
General and administrative expense	332	318	325
Total expenses	3,109	3,047	2,791
Corporate & Other
Expenses:
Distribution expenses	(11)	(10)	(10)
Adjusted Policyholder Account Balance, Interest Expense	202	216	234
Benefits, claims, losses and settlement expenses	215	217	236
Remeasurement (gains) losses of future policy benefit reserves	34	(8)	(1)
Change in fair value of market risk benefits	0	0	0
Amortization of deferred acquisition costs	6	8	11
Interest and debt expense	105	108	97
General and administrative expense	272	366	286
Total expenses	$ 823	$ 897	$ 853