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Segment Information - Reportable Segments and Total Assets (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($) segment	Dec. 31, 2024 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	4
Summary of assets by segment
Total assets	$ 190,086	$ 181,403
Advice & Wealth Management
Summary of assets by segment
Total assets	39,994	41,514
Asset Management
Summary of assets by segment
Total assets	7,213	7,350
Retirement & Protection Solutions
Summary of assets by segment
Total assets	126,646	116,609
Corporate & Other
Summary of assets by segment
Total assets	$ 16,233	$ 15,930

X

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