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Schedule III Supplementary Insurance Information
 12 Months Ended
Dec. 31, 2019
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 CostsReserves for Future Policy Contract BenefitsUnearned PremiumsPolicy and Contract Benefits
(in millions of dollars)
December 31, 2019
Unum US$1,223.0  $11,367.8  $46.0  $1,117.5  
Unum International26.4  2,566.6  129.9  157.3  
Colonial Life1,074.6  2,477.2  36.8  189.4  
Closed Block—  31,368.5  151.2  281.3  
   Total$2,324.0  $47,780.1  $363.9  $1,745.5  
December 31, 2018
Unum US$1,239.4  $10,840.9  $47.2  $1,091.5  
Unum International20.0  2,340.5  123.3  115.6  
Colonial Life1,050.0  2,330.2  36.3  206.2  
Closed Block—  29,330.3  156.5  282.4  
   Total$2,309.4  $44,841.9  $363.3  $1,695.7  
SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION (Continued)

Unum Group and Subsidiaries

(continued from preceding page)

SegmentPremium Income
Net Investment Income1
Benefits and Change in Reserves for Future Benefits2
Amortization of Deferred Acquisition Costs
All Other Expenses3
Premiums Written4
(in millions of dollars)
December 31, 2019
Unum US$6,016.6  $739.4  $4,022.1  $344.0  $1,501.6  $4,073.9  
Unum International630.5  122.5  469.8  7.1  168.8  443.7  
Colonial Life1,685.0  148.0  865.0  258.8  368.1  1,249.6  
Closed Block1,033.5  1,404.9  2,139.3  —  232.7  1,020.8  
Corporate—  20.5  —  —  239.5  —  
   Total$9,365.6  $2,435.3  $7,496.2  $609.9  $2,510.7  
December 31, 2018
Unum US$5,736.4  $778.7  $3,856.5  $315.1  $1,447.4  $3,873.0  
Unum International568.8  117.2  419.8  8.2  144.5  455.5  
Colonial Life1,603.8  151.2  824.9  242.2  353.9  1,277.3  
Closed Block1,077.1  1,377.1  2,919.2  —  235.7  1,065.7  
Corporate—  29.5  —  —  203.3  —  
   Total$8,986.1  $2,453.7  $8,020.4  $565.5  $2,384.8  
December 31, 2017
Unum US$5,443.5  $811.2  $3,693.4  $293.6  $1,398.0  $3,701.3  
Unum International513.0  120.2  381.9  9.1  131.2  404.2  
Colonial Life1,511.4  144.9  788.6  224.4  331.8  1,210.6  
Closed Block1,129.2  1,354.0  2,191.8  —  247.3  1,109.8  
Corporate—  21.4  —  —  191.7  —  
   Total$8,597.1  $2,451.7  $7,055.7  $527.1  $2,300.0  

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 2018 is a reserve charge of $750.8 million in the Closed Block segment related to our long-term care business. Included in 2017 are unclaimed death benefits reserve increases of $26.6 million in Unum US and $12.4 million in Colonial Life.

3 Includes commissions, interest and debt expense, cost related to early retirement of debt, 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. Included in 2017 is a loss contingency accrual for a guaranty fund assessment of $20.6 million in Corporate.

4 Excludes life insurance.