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Segment Information (Tables)
 9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
Premium Income by Major Line of Business within Each Segment
Segment information is shown below.
Three Months Ended September 30Nine Months Ended September 30
2025202420252024
(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability$499.2 $522.1 $1,511.5 $1,560.3 
Group Short-term Disability286.0 271.3 853.6 810.7 
Group Life and Accidental Death & Dismemberment
Group Life468.3 447.8 1,404.5 1,337.9 
Accidental Death & Dismemberment48.9 47.1 146.3 139.3 
Supplemental and Voluntary
Voluntary Benefits231.6 219.3 700.2 665.1 
Individual Disability140.0 140.4 475.4 424.6 
Dental and Vision81.4 75.5 243.4 223.9 
1,755.4 1,723.5 5,334.9 5,161.8 
Unum International
Unum UK
Group Long-term Disability111.3 106.6 319.4 312.4 
Group Life71.9 58.8 201.6 156.3 
Supplemental47.4 41.4 136.3 125.1 
Unum Poland50.5 39.8 141.6 113.3 
281.1 246.6 798.9 707.1 
Colonial Life
Accident, Sickness, and Disability247.5 240.6 743.7 725.5 
Life118.7 113.1 360.7 342.6 
Cancer and Critical Illness90.3 88.2 271.5 266.9 
456.5 441.9 1,375.9 1,335.0 
Closed Block
Long-term Care158.6 173.7 510.7 521.5 
All Other36.4 43.1 118.5 140.9 
195.0 216.8 629.2 662.4 
Total Premium Income$2,688.0 $2,628.8 $8,138.9 $7,866.3 
Selected Operating Statement Data by Segment
Three Months Ended September 30, 2025
Unum USUnum InternationalColonial LifeClosed BlockCorporateTotal
(in millions of dollars)
Premium Income$1,755.4 $281.1 $456.5 $195.0 $— $2,688.0 
Net Investment Income151.9 36.2 44.3 224.7 19.7 476.8 
Other Income1
60.9 2.9 0.6 16.3 0.3 81.0 
Adjusted Operating Revenue$1,968.2 $320.2 $501.4 $436.0 $20.0 $3,245.8 
Adjusted Policy Benefits2
$1,047.7 $214.7 $223.3 $356.0 $— $1,841.7 
Adjusted Policy Benefits - Remeasurement Loss (Gain)³(4.2)(14.3)(3.1)19.0 — (2.6)
Commissions195.8 26.1 96.7 16.6 — 335.2 
Interest and Debt Expense— — — — 52.2 52.2 
Deferral of Acquisition Costs(83.3)(5.5)(84.7)— — (173.5)
Amortization of Deferred Acquisition Costs71.4 2.7 58.2 — — 132.3 
Other Segment Items4
405.9 57.7 94.4 30.3 15.5 603.8 
Adjusted Benefits and Expenses$1,633.3 $281.4 $384.8 $421.9 $67.7 $2,789.1 
Adjusted Operating Income (Loss)$334.9 $38.8 $116.6 $14.1 $(47.7)$456.7 
1Excludes the amortization of the deferred gain on reinsurance in the Unum US segment.
2Excludes the impact of non-contemporaneous reinsurance in the Unum US segment and the Closed Block segment.
3Excludes the reserve assumption updates that occurred in the third quarter of 2025 for all segments except Corporate.
4Excludes the amortization of the cost of reinsurance in the Closed Block segment. For each reportable segment, other segment items includes compensation, other personnel expenses, taxes, licenses and fees, depreciation, intangible asset amortization and other expenses. Depreciation and intangible asset amortization during the three months ended September 30, 2025 was $21.9 million, $5.9 million, $4.3 million, $1.5 million, and $0.1 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
Three Months Ended September 30, 2024
Unum USUnum InternationalColonial LifeClosed BlockCorporateTotal
(in millions of dollars)
Premium Income$1,723.5 $246.6 $441.9 $216.8 $— $2,628.8 
Net Investment Income161.0 30.4 39.6 284.3 12.5 527.8 
Other Income60.1 0.4 0.4 12.4 — 73.3 
Adjusted Operating Revenue$1,944.6 $277.4 $481.9 $513.5 $12.5 $3,229.9 
Adjusted Policy Benefits1
$1,046.0 $192.7 $218.1 $401.8 $— $1,858.6 
Adjusted Policy Benefits - Remeasurement Loss (Gain)²(38.3)(24.9)(7.9)25.8 — (45.3)
Commissions182.6 21.7 93.0 17.8 — 315.1 
Interest and Debt Expense— — — — 49.2 49.2 
Deferral of Acquisition Costs(81.6)(4.6)(77.1)— — (163.3)
Amortization of Deferred Acquisition Costs75.7 2.5 55.6 — — 133.8 
Other Segment Items3
396.9 49.7 86.8 33.9 12.7 580.0 
Adjusted Benefits and Expenses$1,581.3 $237.1 $368.5 $479.3 $61.9 $2,728.1 
Adjusted Operating Income (Loss)$363.3 $40.3 $113.4 $34.2 $(49.4)$501.8 
1Excludes the impact of non-contemporaneous reinsurance in the Closed Block segment.
2Excludes the reserve assumption updates that occurred in the third quarter of 2024 for all segments except Corporate.
3Excludes the amortization of the cost of reinsurance in the Closed Block segment and the loss on legal settlement in the Corporate Segment. For each reportable segment, other segment items includes compensation, other personnel expenses, taxes, licenses and fees, depreciation, intangible asset amortization, and other expenses. Depreciation and intangible asset amortization during the three months ended September 30, 2024 was $21.5 million, $4.5 million, $3.8 million, $1.3 million, and $0.1 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
Nine Months Ended September 30, 2025
Unum USUnum InternationalColonial LifeClosed BlockCorporateTotal
(in millions of dollars)
Premium Income$5,334.9 $798.9 $1,375.9 $629.2 $— $8,138.9 
Net Investment Income455.9 110.9 129.1 778.9 75.9 1,550.7 
Other Income1
190.8 3.3 1.3 38.3 — 233.7 
Adjusted Operating Revenue$5,981.6 $913.1 $1,506.3 $1,446.4 $75.9 $9,923.3 
Adjusted Policy Benefits2
$3,297.2 $576.9 $675.9 $1,185.1 $— $5,735.1 
Adjusted Policy Benefits - Remeasurement Loss (Gain)³(98.3)(16.0)(14.4)68.0 — (60.7)
Commissions605.2 73.6 292.6 50.5 — 1,021.9 
Interest and Debt Expense— — — — 156.2 156.2 
Deferral of Acquisition Costs(253.7)(16.4)(250.9)— — (521.0)
Amortization of Deferred Acquisition Costs208.2 7.8 173.9 — — 389.9 
Other Segment Items4
1,240.8 168.1 279.5 100.4 40.2 1,829.0 
Adjusted Benefits and Expenses$4,999.4 $794.0 $1,156.6 $1,404.0 $196.4 $8,550.4 
Adjusted Operating Income (Loss)$982.2 $119.1 $349.7 $42.4 $(120.5)$1,372.9 
1Excludes the amortization of the deferred gain on reinsurance in the Unum US segment.
2Excludes the impact of non-contemporaneous reinsurance in the Unum US segment and the Closed Block segment.
3Excludes the reserve assumption updates that occurred in the third quarter of 2025 for all segments except Corporate.
4Excludes the amortization of the cost of reinsurance in the Closed Block segment. For each reportable segment, other segment items includes compensation, other personnel expenses, taxes, licenses and fees, depreciation, intangible asset amortization and other expenses. Depreciation and intangible asset amortization during the nine months ended September 30, 2025 was $64.4 million, $15.8 million, $12.5 million, $4.5 million, and $0.4 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
Nine Months Ended September 30, 2024
Unum USUnum InternationalColonial LifeClosed BlockCorporateTotal
(in millions of dollars)
Premium Income$5,161.8 $707.1 $1,335.0 $662.4 $— $7,866.3 
Net Investment Income476.1 94.5 119.4 851.6 44.8 1,586.4 
Other Income178.9 1.2 3.6 37.7 1.1 222.5 
Adjusted Operating Revenue$5,816.8 $802.8 $1,458.0 $1,551.7 $45.9 $9,675.2 
Adjusted Policy Benefits1
$3,207.2 $511.9 $667.7 $1,217.2 $— $5,604.0 
Adjusted Policy Benefits - Remeasurement Loss (Gain)²(223.6)(32.0)(27.0)72.5 — (210.1)
Commissions551.9 61.7 282.2 52.0 — 947.8 
Interest and Debt Expense— — — — 148.6 148.6 
Deferral of Acquisition Costs(247.4)(13.2)(234.7)— — (495.3)
Amortization of Deferred Acquisition Costs216.7 7.3 163.9 — — 387.9 
Other Segment Items3
1,206.0 146.9 261.9 99.9 38.1 1,752.8 
Adjusted Benefits and Expenses$4,710.8 $682.6 $1,114.0 $1,441.6 $186.7 $8,135.7 
Adjusted Operating Income (Loss)$1,106.0 $120.2 $344.0 $110.1 $(140.8)$1,539.5 
1Excludes the impact of non-contemporaneous reinsurance in the Closed Block segment.
2Excludes the reserve assumption updates that occurred in the third quarter of 2024 for all segments except Corporate.
3Excludes the amortization of the cost of reinsurance in the Closed Block segment and the loss on legal settlement in the Corporate segment. For each reportable segment, other segment items includes compensation, other personnel expenses, taxes, licenses and fees, depreciation, intangible asset amortization, and other expenses. Depreciation and intangible asset amortization during the nine months ended September 30, 2024 was $63.3 million, $13.1 million, $11.3 million, $3.9 million, and $0.2 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
Assets by Segment
September 30December 31
20252024
(in millions of dollars)
Assets
Unum US$14,792.9 $14,981.6 
Unum International3,612.3 3,291.3 
Colonial Life5,190.9 4,964.2 
Closed Block34,080.0 33,376.0 
Corporate6,002.0 5,346.2 
Total Assets$63,678.1 $61,959.3 
Reconciliation of Total Revenue and Income Before Income Tax to Adjusted Operating Revenue and Adjusted Operating Income
A reconciliation of total revenue to "adjusted operating revenue" and income before income tax to "adjusted operating income" is as follows:
Three Months Ended September 30Nine Months Ended September 30
2025202420252024
(in millions of dollars)
Total Revenue$3,378.4 $3,217.0 $9,831.4 $9,650.7 
Excluding:
Net Investment Gain (Loss)128.0 (12.9)(96.5)(24.5)
Amortization of the Deferred Gain on Reinsurance4.6 — 4.6 — 
Adjusted Operating Revenue$3,245.8 $3,229.9 $9,923.3 $9,675.2 
Income Before Income Tax$54.5 $814.6 $715.1 $1,805.8 
Excluding:
Net Investment Gains and Losses
Net Investment Gain (Loss) Related to the Fortitude Re Reinsurance Transaction137.6 — (46.8)— 
Net Investment Loss, Other(9.6)(12.9)(49.7)(24.5)
Total Net Investment Gain (Loss)128.0 (12.9)(96.5)(24.5)
Amortization of the Cost of Reinsurance(48.6)(10.4)(67.9)(31.1)
Amortization of the Deferred Gain on Reinsurance
4.6 — 4.6 — 
Non-Contemporaneous Reinsurance(7.7)(6.0)(19.5)(20.2)
Reserve Assumption Updates(478.5)357.4 (478.5)357.4 
Loss on Legal Settlement— (15.3)— (15.3)
Adjusted Operating Income$456.7 $501.8 $1,372.9 $1,539.5