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v3.23.1

Selected Operating Statement Data by Segment (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Segment Reporting Information |  |
Premium Income | $ 2,459.3 | $ 2,401.4
Net Investment Income | 508.8 | 527.2
Other Income | 67.9 | 65.8
Operating Segments |  |
Segment Reporting Information |  |
Premium Income | 2,459.3 | 2,401.4
Net Investment Income | 508.8 | 527.2
Other Income | 67.9 | 65.8
Adjusted Operating Revenue | 3,036.0 | 2,994.4
Adjusted Operating Income (Loss) | 469.5 | 335.3
Operating Segments | Unum US |  |
Segment Reporting Information |  |
Premium Income | 1,609.6 | 1,543.0
Net Investment Income | 157.3 | 171.0
Other Income | 53.6 | 47.1
Adjusted Operating Revenue | 1,820.5 | 1,761.1
Adjusted Operating Income (Loss) | 312.5 | 168.3
Operating Segments | Unum International |  |
Segment Reporting Information |  |
Premium Income | 188.6 | 187.8
Net Investment Income | 30.9 | 34.5
Other Income | 0.4 | 0.2
Adjusted Operating Revenue | 219.9 | 222.5
Adjusted Operating Income (Loss) | 38.4 | 25.9
Operating Segments | Colonial Life |  |
Segment Reporting Information |  |
Premium Income | 429.5 | 430.7
Net Investment Income | 37.3 | 38.1
Other Income | 0.2 | 0.3
Adjusted Operating Revenue | 467.0 | 469.1
Adjusted Operating Income (Loss) | 93.9 | 102.9
Operating Segments | Closed Block |  |
Segment Reporting Information |  |
Premium Income | 231.6 | 239.9
Net Investment Income | 257.2 | 274.8
Other Income | 13.5 | 16.0
Adjusted Operating Revenue | 502.3 | 530.7
Adjusted Operating Income (Loss) | 58.2 | 78.6
Operating Segments | Corporate |  |
Segment Reporting Information |  |
Premium Income | 0.0 | 0.0
Net Investment Income | 26.1 | 8.8
Other Income | 0.2 | 2.2
Adjusted Operating Revenue | 26.3 | 11.0
Adjusted Operating Income (Loss) | $ (33.5) | $ (40.4)

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