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Schedule III Supplementary Insurance Information
 12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]  
Supplementary Insurance Information, for Insurance Companies Disclosure
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION

Unum Group and Subsidiaries
SegmentDeferred Acquisition Costs
Future Policy Benefits
Policyholders' Account BalancesUnearned Premiums
(in millions of dollars)
December 31, 2024
Unum US$1,260.6 $8,669.7 $675.7 $51.7 
Unum International53.0 2,163.0 — 165.5 
Colonial Life1,529.2 1,904.2 862.5 45.4 
Closed Block— 24,069.5 4,095.5 121.4 
   Total$2,842.8 $36,806.4 $5,633.7 $384.0 
December 31, 2023
Unum US$1,232.2 $9,419.1 $678.1 $54.6 
Unum International46.9 2,305.3 — 151.4 
Colonial Life1,435.4 1,997.8 869.8 44.5 
Closed Block— 26,287.2 4,119.8 129.7 
   Total$2,714.5 $40,009.4 $5,667.7 $380.2 
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION (Continued)

Unum Group and Subsidiaries
SegmentPremium Income
Net Investment Income1
Policy Benefits Including Remeasurement Loss or Gain2
Amortization of Deferred Acquisition Costs
All Other Expenses3
Premiums Written4
(in millions of dollars)
December 31, 2024
Unum US$6,883.2 $632.2 $3,864.7 $292.5 $2,011.3 $4,834.0 
Unum International949.5 128.8 656.7 9.5 263.4 581.6 
Colonial Life1,783.9 161.5 804.7 219.0 413.0 1,247.4 
Closed Block880.8 1,148.9 1,591.8 — 243.0 868.1 
Corporate— 58.6 — — 266.4 — 
   Total$10,497.4 $2,130.0 $6,917.9 $521.0 $3,197.1 
December 31, 2023
Unum US$6,579.2 $639.9 $3,808.5 $267.6 $1,879.2 $4,634.3 
Unum International825.2 137.2 579.8 8.4 235.6 544.4 
Colonial Life1,726.1 153.5 798.1 205.4 396.5 1,221.8 
Closed Block915.5 1,066.3 2,070.7 — 246.5 904.2 
Corporate— 99.8 — — 249.5 — 
   Total$10,046.0 $2,096.7 $7,257.1 $481.4 $3,007.3 
December 31, 2022
Unum US$6,251.4 $676.3 $3,970.9 $240.9 $1,768.8 $4,335.7 
Unum International718.8 170.1 549.6 8.2 190.4 504.1 
Colonial Life1,702.0 152.7 826.1 172.0 389.6 1,221.8 
Closed Block944.3 1,070.6 1,648.0 — 248.0 936.8 
Corporate— 52.5 — — 221.6 — 
   Total$9,616.5 $2,122.2 $6,994.6 $421.1 $2,818.4 

1 Net investment income is allocated based upon segmentation. Each segment has its own specifically identified assets and receives the investment income generated by those assets.

2 Included in policy benefits including remeasurement loss or gain were the following:

•In 2024, reserve assumption updates resulting in a net decrease in policy benefits including remeasurement gain or loss in the Unum US, Colonial Life and Closed Block segments of $143.6 million, $46.0 million, $175.3 million, respectively and a net increase in policy benefits including remeasurement gain or loss in the Unum International segment of $7.5 million.
•In 2023, reserve assumption updates resulting in a net decrease in policy benefits including remeasurement gain or loss in the Unum US and Colonial Life segments of $128.8 million and $80.7 million respectively and a net increase in policy benefits including remeasurement gain or loss in the Unum International and Closed Block segments of $17.9 million, and $368.8 million, respectively.
•In 2022, reserve assumption updates resulting in a net decrease in policy benefits including remeasurement gain or loss in the Unum US, Unum International, Colonial Life, and Closed Block segments of $170.8 million, $7.6 million, and $55.2 million, and $9.7 million respectively.
•In 2024, 2023, and 2022 the impact of non-contemporaneous reinsurance of $25.1 million, $34.8 million, and $34.4 million respectively, in the Closed Block segment.
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION (Continued)

Unum Group and Subsidiaries

3 Includes commissions, interest and debt expense, deferral of acquisition costs, compensation expense, and other expenses. Where not directly attributable to a segment, expenses are generally allocated based on activity levels, time information, and usage statistics. Also included in all other expenses were the following:
•In 2024, 2023 and 2022 the amortization of the cost of reinsurance of $41.4 million, $44.1 million, and $50.3 million respectively, in the Closed Block segment.
•In 2024, we incurred a loss on legal settlement of $15.3 million for the settlement of an employment-related matter, in the Corporate segment.

4 Excludes life insurance.