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Segment Information - Reconciliation of Segment Assets to Consolidated (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Segment Information: Assets
Total assets	$ 313,003.3	$ 313,663.6
Retirement and Income Solutions
Segment Information: Assets
Total assets	219,759.2	222,967.0
Principal Asset Management
Segment Information: Assets
Total assets	44,916.7	43,029.4
Benefits and Protection
Segment Information: Assets
Total assets	46,350.0	46,006.7
Corporate
Segment Information: Assets
Total assets	$ 1,977.4	$ 1,660.5

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Amount of asset recognized for present right to economic benefit.

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