Segment Information (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Premium Income by Major Line of Business within Each Segment

Segment information is as follows:

	Three Months Ended June 30				Six Months Ended June 30
	2021		2020		2021		2020
	(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability	$	458.6	$	461.0	$	916.3	$	924.0
Group Short-term Disability	213.6		203.6		428.8		406.8
Group Life and Accidental Death & Dismemberment
Group Life	414.6		414.6		824.6		829.1
Accidental Death & Dismemberment	42.0		41.7		83.4		83.4
Supplemental and Voluntary
Individual Disability	113.6		113.1		229.3		222.6
Voluntary Benefits	212.1		224.0		430.8		454.4
Dental and Vision	67.6		64.7		134.7		130.1
	1,522.1		1,522.7		3,047.9		3,050.4
Unum International
Unum UK
Group Long-term Disability	105.1		89.0		202.2		179.8
Group Life	28.0		25.1		55.3		56.0
Supplemental	27.9		24.6		55.9		48.5
Unum Poland	22.5		18.4		44.5		37.4
	183.5		157.1		357.9		321.7
Colonial Life
Accident, Sickness, and Disability	236.4		250.3		477.1		499.6
Life	96.1		96.8		192.7		190.6
Cancer and Critical Illness	87.2		91.5		176.3		183.1
	419.7		438.6		846.1		873.3
Closed Block
Long-term Care	174.9		165.7		352.3		330.5
Individual Disability	72.4		83.1		144.5		160.1
All Other	1.8		1.5		4.0		4.1
	249.1		250.3		500.8		494.7
Total Premium Income	$	2,374.4	$	2,368.7	$	4,752.7	$	4,740.1

Selected Operating Statement Data by Segment

	Unum US		Unum International		Colonial Life		Closed Block		Corporate		Total
	(in millions of dollars)
Three Months Ended June 30, 2021
Premium Income	$	1,522.1	$	183.5	$	419.7	$	249.1	$	—	$	2,374.4
Net Investment Income	183.6		35.7		41.6		294.7		7.9		563.5
Other Income	41.3		0.1		0.3		12.1		0.4		54.2
Adjusted Operating Revenue	$	1,747.0	$	219.3	$	461.6	$	555.9	$	8.3	$	2,992.1
Adjusted Operating Income (Loss)	$	179.3	$	24.8	$	95.8	$	111.2	$	(48.5)	$	362.6
Three Months Ended June 30, 2020
Premium Income	$	1,522.7	$	157.1	$	438.6	$	250.3	$	—	$	2,368.7
Net Investment Income	176.9		26.3		36.8		326.3		2.7		569.0
Other Income	35.3		0.2		0.3		13.7		0.2		49.7
Adjusted Operating Revenue	$	1,734.9	$	183.6	$	475.7	$	590.3	$	2.9	$	2,987.4
Adjusted Operating Income (Loss)	$	231.9	$	15.1	$	90.9	$	36.7	$	(58.1)	$	316.5

	Unum US		Unum International		Colonial Life		Closed Block		Corporate		Total
	(in millions of dollars)
Six Months Ended June 30, 2021
Premium Income	$	3,047.9	$	357.9	$	846.1	$	500.8	$	—	$	4,752.7
Net Investment Income	363.3		61.7		79.3		591.9		16.0		1,112.2
Other Income	81.7		0.2		0.5		30.5		1.7		114.6
Adjusted Operating Revenue	$	3,492.9	$	419.8	$	925.9	$	1,123.2	$	17.7	$	5,979.5
Adjusted Operating Income (Loss)	$	295.0	$	51.2	$	169.1	$	208.2	$	(87.4)	$	636.1
Six Months Ended June 30, 2020
Premium Income	$	3,050.4	$	321.7	$	873.3	$	494.7	$	—	$	4,740.1
Net Investment Income	356.5		52.8		74.5		662.4		7.8		1,154.0
Other Income	75.5		0.2		0.6		31.9		0.2		108.4
Adjusted Operating Revenue	$	3,482.4	$	374.7	$	948.4	$	1,189.0	$	8.0	$	6,002.5
Adjusted Operating Income (Loss)	$	493.7	$	34.5	$	172.0	$	66.4	$	(104.0)	$	662.6

Assets by Segment

	June 30		December 31
	2021		2020
	(in millions of dollars)
Assets
Unum US	$	18,866.8	$	19,034.2
Unum International	4,287.4		4,206.2
Colonial Life	4,884.9		4,864.3
Closed Block	38,341.2		38,187.2
Corporate	4,427.6		4,333.9
Total Assets	$	70,807.9	$	70,625.8

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 June 30				Six Months Ended June 30
	2021		2020		2021		2020
	(in millions of dollars)
Total Revenue	$	2,993.0	$	3,021.2	$	6,065.0	$	5,892.3
Excluding:
Net Realized Investment Gain (Loss)	0.9		33.8		85.5		(110.2)
Adjusted Operating Revenue	$	2,992.1	$	2,987.4	$	5,979.5	$	6,002.5
Income Before Income Tax	$	262.6	$	337.6	$	461.4	$	539.7
Excluding:
Net Realized Investment Gains and Losses
Net Realized Investment Gain Related to Reinsurance Transaction	—		—		67.6		—
Net Realized Investment Gain (Loss), Other	0.9		33.8		17.9		(110.2)
Total Net Realized Investment Gain (Loss)	0.9		33.8		85.5		(110.2)
Items Related to Closed Block Individual Disability Reinsurance Transaction
Change in Benefit Reserves and Transaction Costs	—		—		(139.3)		—
Amortization of the Cost of Reinsurance	(19.7)		—		(39.7)		—
Total Items Related to Closed Block Individual Disability Reinsurance Transaction	(19.7)		—		(179.0)		—
Cost Related to Early Retirement of Debt	(67.3)		—		(67.3)		—
Impairment Loss on ROU Asset	(13.9)		(12.7)		(13.9)		(12.7)
Adjusted Operating Income	$	362.6	$	316.5	$	636.1	$	662.6