Segment Information (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Premium Income by Major Line of Business within Each Segment

Segment information is shown below.

	Three Months Ended March 31
	2024		2023
	(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability	$	516.7	$	504.7
Group Short-term Disability	263.1		240.3
Group Life and Accidental Death & Dismemberment
Group Life	442.6		413.1
Accidental Death & Dismemberment	45.8		43.5
Supplemental and Voluntary
Voluntary Benefits	222.9		214.5
Individual Disability	142.0		124.2
Dental and Vision	74.3		69.3
	1,707.4		1,609.6
Unum International
Unum UK
Group Long-term Disability	103.5		91.7
Group Life	48.7		39.2
Supplemental	43.1		31.8
Unum Poland	36.4		25.9
	231.7		188.6
Colonial Life
Accident, Sickness, and Disability	243.2		235.7
Life	114.3		105.3
Cancer and Critical Illness	89.4		88.5
	446.9		429.5
Closed Block
Long-term Care	174.5		175.1
All Other	49.8		56.5
	224.3		231.6
Total Premium Income	$	2,610.3	$	2,459.3

Selected Operating Statement Data by Segment

	Unum US		Unum International		Colonial Life		Closed Block		Corporate		Total
	(in millions of dollars)
Three Months Ended March 31, 2024
Premium Income	$	1,707.4	$	231.7	$	446.9	$	224.3	$	—	$	2,610.3
Net Investment Income	157.0		26.1		39.3		273.1		18.0		513.5
Other Income	60.6		0.3		3.0		13.1		0.7		77.7
Adjusted Operating Revenue	$	1,925.0	$	258.1	$	489.2	$	510.5	$	18.7	$	3,201.5
Adjusted Operating Income (Loss)	$	385.2	$	37.4	$	113.7	$	24.3	$	(46.1)	$	514.5
Three Months Ended March 31, 2023
Premium Income	$	1,609.6	$	188.6	$	429.5	$	231.6	$	—	$	2,459.3
Net Investment Income	157.3		30.9		37.3		257.2		26.1		508.8
Other Income	53.6		0.4		0.2		13.5		0.2		67.9
Adjusted Operating Revenue	$	1,820.5	$	219.9	$	467.0	$	502.3	$	26.3	$	3,036.0
Adjusted Operating Income (Loss)	$	312.5	$	38.4	$	93.9	$	58.2	$	(33.5)	$	469.5

Assets by Segment

	March 31		December 31
	2024		2023
	(in millions of dollars)
Assets
Unum US	$	15,230.2	$	15,561.1
Unum International	3,337.1		3,372.9
Colonial Life	4,852.2		4,830.4
Closed Block	34,690.1		35,272.8
Corporate	4,378.2		4,218.0
Total Assets	$	62,487.8	$	63,255.2

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 March 31
	2024		2023
	(in millions of dollars)
Total Revenue	$	3,200.3	$	3,036.1
Excluding:
Net Investment Gain (Loss)	(1.2)		0.1
Adjusted Operating Revenue	$	3,201.5	$	3,036.0
Income Before Income Tax	$	495.7	$	451.3
Excluding:
Net Investment Gain (Loss)	(1.2)		0.1
Amortization of the Cost of Reinsurance	(10.4)		(11.0)
Non-Contemporaneous Reinsurance	(7.2)		(7.3)
Adjusted Operating Income	$	514.5	$	469.5