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Segment Information - Segment Pre-Tax Operating Earnings (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income (loss) before income taxes | $ 503.1 | $ 443.9 | $ 532.0 | $ 1,071.0
Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income (loss) before income taxes | 594.9 | 486.1 | 1,080.0 | 958.3
Operating Segments | Retirement and Income Solutions |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income (loss) before income taxes | 292.1 | 267.8 | 575.8 | 530.0
Operating Segments | Principal Asset Management |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income (loss) before income taxes | 236.4 | 189.4 | 423.9 | 376.5
Operating Segments | Benefits and Protection |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income (loss) before income taxes | 147.6 | 132.3 | 267.1 | 244.1
Operating Segments | Corporate |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income (loss) before income taxes | (81.2) | (103.4) | (186.8) | (192.3)
Reconciling items |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Pre-tax net realized capital gains (losses), as adjusted | (44.7) | (21.6) | (174.2) | (53.2)
Pre-tax income (loss) from exited business | (33.1) | (3.9) | (347.4) | 193.7
Adjustments related to equity method investments and noncontrolling interest | $ (14.0) | $ (16.7) | $ (26.4) | $ (27.8)

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- Definition Pre-tax net realized capital gains (losses) are net of related changes in the amortization pattern of deferred acquisition costs and related actuarial balances, recognition of deferred front-end fee revenues for sales charges on retirement and life insurance products and services, amortization of hedge accounting book value adjustments for certain discontinued hedges, net realized capital gains and losses distributed, noncontrolling interest capital gains and losses, certain adjustments related to seed money and certain market value adjustments to fee revenues. Pre-tax net realized capital gains (losses), as adjusted, exclude periodic settlements and accruals on derivative instruments not designated as hedging instruments and exclude certain market value adjustments of embedded derivatives and realized capital gains (losses) associated with our exited group medical insurance business. + References No definition available. + Details
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