v3.26.1
Selected Operating Statement Data by Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting        
Premium Income $ 2,817.8 $ 2,748.0 $ 5,611.8 $ 5,450.9
Net Investment Income 478.4 560.7 961.8 1,073.9
Other Income 79.0 70.4 161.8 152.7
Policy Benefits 1,991.2 1,944.9 3,947.0 3,905.2
Policy Benefits - Remeasurement Loss (Gain) 10.0 31.2 58.2 (58.1)
Commissions 364.3 343.5 732.8 686.7
Interest and Debt Expense 53.3 52.0 106.4 104.0
Deferral of Acquisition Costs (187.4) (174.9) (378.0) (347.5)
Amortization of Deferred Acquisition Costs 135.4 132.2 269.6 257.6
Unum US        
Segment Reporting        
Amortization of Deferred Acquisition Costs     139.6 136.8
Unum International        
Segment Reporting        
Amortization of Deferred Acquisition Costs     6.1 5.1
Colonial Life        
Segment Reporting        
Amortization of Deferred Acquisition Costs     123.9 115.7
Operating Segments        
Segment Reporting        
Premium Income 2,817.8 2,748.0 5,611.8 5,450.9
Adjusted Net Investment Income 494.7   978.1  
Net Investment Income   560.7   1,073.9
Other Income 79.0 70.4 161.8 152.7
Segment Adjusted Operating Revenue 3,391.5 3,379.1 6,751.7 6,677.5
Policy Benefits 1,991.2 1,944.9 3,947.0 3,905.2
Policy Benefits - Remeasurement Loss (Gain) 10.0 31.2 58.2 (58.1)
Commissions 364.3 343.5 732.8 686.7
Interest and Debt Expense 53.3 52.0 106.4 104.0
Deferral of Acquisition Costs (187.4) (174.9) (378.0) (347.5)
Amortization of Deferred Acquisition Costs 135.4 132.2 269.6 257.6
Other Segment Items 659.3 [1] 615.5 [2] 1,342.6 [3] 1,244.5 [4]
Adjusted Benefits and Expenses 3,026.1 2,944.4 6,078.6 5,792.4
Adjusted Operating Income (Loss) 365.4 434.7 673.1 885.1
Operating Segments | Unum US        
Segment Reporting        
Premium Income 1,858.2 1,798.6 3,698.7 3,579.5
Adjusted Net Investment Income 155.8   314.1  
Net Investment Income   155.1   304.0
Other Income 65.9 58.0 132.7 129.9
Segment Adjusted Operating Revenue 2,079.9 2,011.7 4,145.5 4,013.4
Policy Benefits 1,165.1 1,110.9 2,292.2 2,249.5
Policy Benefits - Remeasurement Loss (Gain) (29.1) (18.7) (60.9) (94.1)
Commissions 213.7 203.8 433.1 409.4
Interest and Debt Expense 0.0 0.0 0.0 0.0
Deferral of Acquisition Costs (89.7) (85.7) (181.3) (170.4)
Amortization of Deferred Acquisition Costs 70.9 71.6 139.6 136.8
Other Segment Items 419.4 [1] 411.6 [2] 855.3 [3] 834.9 [4]
Adjusted Benefits and Expenses 1,750.3 1,693.5 3,478.0 3,366.1
Adjusted Operating Income (Loss) 329.6 318.2 667.5 647.3
Depreciation and Amortization 21.0 21.2 [2] 42.7 42.5
Operating Segments | Unum International        
Segment Reporting        
Premium Income 289.3 271.1 576.0 517.8
Adjusted Net Investment Income 42.2   71.8  
Net Investment Income   46.2   74.7
Other Income 2.7 0.3 6.0 0.4
Segment Adjusted Operating Revenue 334.2 317.6 653.8 592.9
Policy Benefits 219.8 189.3 426.1 362.2
Policy Benefits - Remeasurement Loss (Gain) 6.9 7.1 4.1 (1.7)
Commissions 29.2 25.1 60.2 47.5
Interest and Debt Expense 0.0 0.0 0.0 0.0
Deferral of Acquisition Costs (7.1) (5.6) (16.3) (10.9)
Amortization of Deferred Acquisition Costs 2.7 2.6 6.1 5.1
Other Segment Items 58.4 [1] 57.5 [2] 118.4 [3] 110.4 [4]
Adjusted Benefits and Expenses 309.9 276.0 598.6 512.6
Adjusted Operating Income (Loss) 24.3 41.6 55.2 80.3
Depreciation and Amortization 6.5 5.2 [2] 12.0 9.9
Operating Segments | Colonial Life        
Segment Reporting        
Premium Income 477.4 462.1 950.1 919.4
Adjusted Net Investment Income 50.1   96.9  
Net Investment Income   42.6   84.8
Other Income 0.4 0.3 1.1 0.7
Segment Adjusted Operating Revenue 527.9 505.0 1,048.1 1,004.9
Policy Benefits 230.9 226.0 460.6 452.6
Policy Benefits - Remeasurement Loss (Gain) (8.0) (2.8) (20.4) (11.3)
Commissions 106.9 98.6 209.8 195.9
Interest and Debt Expense 0.0 0.0 0.0 0.0
Deferral of Acquisition Costs (90.6) (83.6) (180.4) (166.2)
Amortization of Deferred Acquisition Costs 61.8 58.0 123.9 115.7
Other Segment Items 95.5 [1] 91.4 [2] 195.4 [3] 185.1 [4]
Adjusted Benefits and Expenses 396.5 387.6 788.9 771.8
Adjusted Operating Income (Loss) 131.4 117.4 259.2 233.1
Depreciation and Amortization 4.4 4.0 [2] 8.8 8.2
Operating Segments | Closed Block        
Segment Reporting        
Premium Income 192.9 216.2 387.0 434.2
Adjusted Net Investment Income 226.1   455.2  
Net Investment Income   284.5   554.2
Other Income 9.6 12.1 20.9 22.0
Segment Adjusted Operating Revenue 428.6 512.8 863.1 1,010.4
Policy Benefits 373.1 418.7 765.8 840.9
Policy Benefits - Remeasurement Loss (Gain) 40.2 45.6 135.4 49.0
Commissions 14.5 16.0 29.7 33.9
Interest and Debt Expense 0.0 0.0 0.0 0.0
Deferral of Acquisition Costs 0.0 0.0 0.0 0.0
Amortization of Deferred Acquisition Costs 0.0 0.0 0.0 0.0
Other Segment Items 76.2 [1] 43.3 [2] 152.9 [3] 89.4 [4]
Adjusted Benefits and Expenses 504.0 523.6 1,083.8 1,013.2
Adjusted Operating Income (Loss) (75.4) (10.8) (220.7) (2.8)
Depreciation and Amortization 1.6 1.5 [2] 3.2 3.0
Operating Segments | Corporate        
Segment Reporting        
Premium Income 0.0 0.0 0.0 0.0
Adjusted Net Investment Income [5] 20.5   40.1  
Net Investment Income   32.3   56.2
Other Income 0.4 (0.3) 1.1 (0.3)
Segment Adjusted Operating Revenue 20.9 32.0 41.2 55.9
Policy Benefits 2.3 0.0 2.3 0.0
Policy Benefits - Remeasurement Loss (Gain) 0.0 0.0 0.0 0.0
Commissions 0.0 0.0   0.0
Interest and Debt Expense 53.3 52.0 106.4 104.0
Deferral of Acquisition Costs 0.0 0.0 0.0 0.0
Amortization of Deferred Acquisition Costs 0.0 0.0 0.0 0.0
Other Segment Items 9.8 [1],[5] 11.7 [2] 20.6 [3],[5] 24.7 [4]
Adjusted Benefits and Expenses 65.4 63.7 129.3 128.7
Adjusted Operating Income (Loss) (44.5) $ (31.7) (88.1) (72.8)
Depreciation and Amortization $ 17.6   $ 18.9 $ 0.3
[1]
2For 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 June 30, 2026 was $21.0 million, $6.5 million, $4.4 million, $1.6 million, and $17.6 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
[2]
1For 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 June 30, 2025 was $21.2 million, $5.2 million, $4.0 million, $1.5 million, and $0.2 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
[3]
2For 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 six months ended June 30, 2026 was $42.7 million, $12.0 million, $8.8 million, $3.2 million, and $18.9 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
[4]
1For 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 six months ended June 30, 2025 was $42.5 million, $9.9 million, $8.2 million, $3.0 million, and $0.3 million for our Unum US, Unum International, Colonial Life, Closed Block and Corporate segments, respectively.
[5]
1Excludes the impact of the strategic actions in the Corporate segment.