Segment Information - Significant Expense Categories (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Expenses:
Remeasurement (gains) losses of future policy benefit reserves	$ (1)	$ (10)
Change in fair value of market risk benefits	378	497
Interest and debt expense	80	80
Advice & Wealth Management
Expenses:
Distribution expenses	1,770	1,554
Interest credited to fixed accounts	0	0
Benefits, claims, losses and settlement expenses	0	0
Remeasurement (gains) losses of future policy benefit reserves	0	0
Change in fair value of market risk benefits	0	0
Amortization of deferred acquisition costs	0	0
Interest and debt expense	15	12
General and administrative expense	439	424
Total expenses	2,224	1,990
Asset Management
Expenses:
Distribution expenses	262	246
Interest credited to fixed accounts	0	0
Benefits, claims, losses and settlement expenses	0	0
Remeasurement (gains) losses of future policy benefit reserves	0	0
Change in fair value of market risk benefits	0	0
Amortization of deferred acquisition costs	2	2
Interest and debt expense	4	3
General and administrative expense	369	354
Total expenses	637	605
Retirement & Protection Solutions
Expenses:
Distribution expenses	132	123
Interest credited to fixed accounts	93	92
Benefits, claims, losses and settlement expenses	235	211
Remeasurement (gains) losses of future policy benefit reserves	(2)	(3)
Change in fair value of market risk benefits	155	143
Amortization of deferred acquisition costs	58	57
Interest and debt expense	10	8
General and administrative expense	81	80
Total expenses	762	711
Corporate & Other
Expenses:
Distribution expenses	(2)	(2)
Interest credited to fixed accounts	50	51
Benefits, claims, losses and settlement expenses	53	56
Remeasurement (gains) losses of future policy benefit reserves	1	(7)
Change in fair value of market risk benefits	0	0
Amortization of deferred acquisition costs	1	2
Interest and debt expense	24	28
General and administrative expense	57	73
Total expenses	$ 184	$ 201