Segment Information (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Premium Income by Major Line of Business within Each Segment

Segment information is as follows:

Certain prior year amounts were reclassified to conform to current year presentation.

	Three Months Ended June 30				Six Months Ended June 30
	2020		2019		2020		2019
	(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability	$	461.0	$	457.2	$	924.0	$	910.1
Group Short-term Disability	203.6		187.6		406.8		376.3
Group Life and Accidental Death & Dismemberment
Group Life	414.6		420.0		829.1		834.4
Accidental Death & Dismemberment	41.7		41.7		83.4		82.7
Supplemental and Voluntary
Individual Disability	113.1		108.5		222.6		219.2
Voluntary Benefits	224.0		228.6		454.4		463.0
Dental and Vision	64.7		60.9		130.1		120.7
	1,522.7		1,504.5		3,050.4		3,006.4
Unum International
Unum UK
Group Long-term Disability	89.0		89.6		179.8		177.5
Group Life	25.1		28.8		56.0		56.0
Supplemental	24.6		22.4		48.5		44.1
Unum Poland	18.4		17.8		37.4		35.0
	157.1		158.6		321.7		312.6
Colonial Life
Accident, Sickness, and Disability	250.3		242.4		499.6		484.6
Life	96.8		88.3		190.6		175.9
Cancer and Critical Illness	91.5		90.2		183.1		179.7
	438.6		420.9		873.3		840.2
Closed Block
Long-term Care	165.7		162.6		330.5		325.6
Individual Disability	83.1		94.4		160.1		192.5
All Other	1.5		2.1		4.1		4.5
	250.3		259.1		494.7		522.6
Total Premium Income	$	2,368.7	$	2,343.1	$	4,740.1	$	4,681.8

Selected Operating Statement Data by Segment

	Unum US		Unum International		Colonial Life		Closed Block		Corporate		Total
	(in millions of dollars)
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
Six Months Ended June 30, 2019
Premium Income	$	3,006.4	$	312.6	$	840.2	$	522.6	$	—	$	4,681.8
Net Investment Income	366.2		69.6		74.1		701.1		8.6		1,219.6
Other Income	71.3		0.3		1.3		34.5		1.7		109.1
Adjusted Operating Revenue	$	3,443.9	$	382.5	$	915.6	$	1,258.2	$	10.3	$	6,010.5
Adjusted Operating Income (Loss)	$	506.6	$	59.8	$	169.6	$	64.7	$	(89.2)	$	711.5

Assets by Segment

	June 30		December 31
	2020		2019
	(in millions of dollars)
Assets
Unum US	$	18,790.7	$	18,586.3
Unum International	3,823.9		3,869.1
Colonial Life	4,768.0		4,629.0
Closed Block	37,823.7		37,008.7
Corporate	4,098.9		2,920.3
Total Assets	$	69,305.2	$	67,013.4

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
	2020		2019		2020		2019
	(in millions of dollars)
Total Revenue	$	3,021.2	$	3,016.7	$	5,892.3	$	6,004.3
Excluding:
Net Realized Investment Gain (Loss)	33.8		(7.3)		(110.2)		(6.2)
Adjusted Operating Revenue	$	2,987.4	$	3,024.0	$	6,002.5	$	6,010.5
Income Before Income Tax	$	337.6	$	352.0	$	539.7	$	705.3
Excluding:
Net Realized Investment Gain (Loss)	33.8		(7.3)		(110.2)		(6.2)
Impairment Loss on ROU Asset	(12.7)		—		(12.7)		—
Adjusted Operating Income	$	316.5	$	359.3	$	662.6	$	711.5