Segment Information - Significant Expense Categories (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Expenses:
Remeasurement (gains) losses of future policy benefit reserves	$ 1	$ (3)	$ 0	$ (13)
Change in fair value of market risk benefits	(229)	(10)	149	487
Interest and debt expense	84	82	164	162
Advice & Wealth Management
Expenses:
Distribution expenses	1,829	1,546	3,599	3,100
Interest credited to fixed accounts	0	0	0	0
Benefits, claims, losses and settlement expenses	0	0	0	0
Remeasurement (gains) losses of future policy benefit reserves	0	0	0	0
Change in fair value of market risk benefits	0	0	0	0
Amortization of deferred acquisition costs	0	0	0	0
Interest and debt expense	15	14	30	26
General and administrative expense	463	435	902	859
Total expenses	2,307	1,995	4,531	3,985
Asset Management
Expenses:
Distribution expenses	270	240	532	486
Interest credited to fixed accounts	0	0	0	0
Benefits, claims, losses and settlement expenses	0	0	0	0
Remeasurement (gains) losses of future policy benefit reserves	0	0	0	0
Change in fair value of market risk benefits	0	0	0	0
Amortization of deferred acquisition costs	1	1	3	3
Interest and debt expense	4	3	8	6
General and administrative expense	398	364	767	718
Total expenses	673	608	1,310	1,213
Retirement & Protection Solutions
Expenses:
Distribution expenses	139	126	271	249
Interest credited to fixed accounts	94	93	187	185
Benefits, claims, losses and settlement expenses	234	209	469	420
Remeasurement (gains) losses of future policy benefit reserves	(3)	(7)	(5)	(10)
Change in fair value of market risk benefits	162	153	317	296
Amortization of deferred acquisition costs	58	58	116	115
Interest and debt expense	10	11	20	19
General and administrative expense	79	79	160	159
Total expenses	773	722	1,535	1,433
Corporate & Other
Expenses:
Distribution expenses	(3)	(3)	(5)	(5)
Interest credited to fixed accounts	50	51	100	102
Benefits, claims, losses and settlement expenses	54	53	107	109
Remeasurement (gains) losses of future policy benefit reserves	4	4	5	(3)
Change in fair value of market risk benefits	0	0	0	0
Amortization of deferred acquisition costs	2	1	3	3
Interest and debt expense	26	26	50	54
General and administrative expense	62	83	119	156
Total expenses	$ 195	$ 215	$ 379	$ 416