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v3.25.4

Reconciliation of Total Revenue and Income Before Income Tax to Operating Revenue and Operating Income (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Segment Reporting, Revenue Reconciling Item |  |  |
Total Revenue | $ 13,075.5 | $ 12,887.3 | $ 12,385.9
Net Investment Loss | (106.6) | (34.6) | (36.0)
Amortization of Deferred Gain on Reinsurance | 9.0 | 0.0 | 0.0
Income Before Income Tax | 933.5 | 2,251.3 | 1,640.1
Settlement Loss on the U.S. Pension Plan Annuity Purchase | (103.8) | 0.0 | 0.0
Accelerated Charitable Contribution | (20.0) | 0.0 | 0.0
Loss on Legal Settlement |  | 15.3 |
UNITED STATES | Pension Plan |  |  |
Segment Reporting, Revenue Reconciling Item |  |  |
Settlement Loss on the U.S. Pension Plan Annuity Purchase | (103.8) | 0.0 | 0.0
Operating Segments |  |  |
Segment Reporting, Revenue Reconciling Item |  |  |
Total Revenue | 13,075.5 | 12,887.3 | 12,385.9
Net Investment Loss | (106.6) | (34.6) | (36.0)
Amortization of Deferred Gain on Reinsurance | 9.0 | 0.0 | 0.0
Adjusted Operating Revenue | 13,173.1 | 12,921.9 | 12,421.9
Income Before Income Tax | 933.5 | 2,251.3 | 1,640.1
Reserve Assumption Updates | (478.5) | 357.4 | (177.2)
Loss on Legal Settlement | 0.0 | 15.3 | 0.0
Adjusted Operating Income | 1,779.7 | 2,010.3 | 1,932.2
Operating Segments | Closed Block Individual Disability Reinsurance Transaction |  |  |
Segment Reporting, Revenue Reconciling Item |  |  |
Non-Contemporaneous Reinsurance | (29.6) |  |
Operating Segments | Long-term Care and Individual Disability Reinsurance Transaction |  |  |
Segment Reporting, Revenue Reconciling Item |  |  |
Net Investment Loss | (46.8) | 0.0 | 0.0
Operating Segments | Unrelated to Significant Transaction |  |  |
Segment Reporting, Revenue Reconciling Item |  |  |
Net Investment Loss | $ (59.8) | $ (34.6) | $ (36.0)

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