Segment Information - Reportable Segments and Total Assets (Details) $ in Millions	3 Months Ended
Mar. 31, 2026 USD ($) segment	Dec. 31, 2025 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment	4
Summary of assets by segment
Total assets	$ 184,448	$ 190,904
Advice & Wealth Management
Summary of assets by segment
Total assets	40,171	40,038
Asset Management
Summary of assets by segment
Total assets	6,548	6,723
Retirement & Protection Solutions
Summary of assets by segment
Total assets	122,100	127,778
Corporate & Other
Summary of assets by segment
Total assets	$ 15,629	$ 16,365

Amount of asset recognized for present right to economic benefit.

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+ Details