Segment Information (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Premium Income by Major Line of Business within Each Segment

Segment information is as follows:

	Three Months Ended September 30				Nine Months Ended September 30
	2015		2014		2015		2014
	(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability	$	414.3	$	387.7	$	1,229.0	$	1,157.4
Group Short-term Disability	153.2		138.3		452.5		413.4
Group Life and Accidental Death & Dismemberment
Group Life	336.5		316.1		1,007.5		939.2
Accidental Death & Dismemberment	32.1		32.2		98.0		93.9
Supplemental and Voluntary
Individual Disability	119.6		116.9		355.9		348.8
Voluntary Benefits	186.1		171.5		565.5		520.2
	1,241.8		1,162.7		3,708.4		3,472.9
Unum UK
Group Long-term Disability	100.6		104.5		296.5		313.4
Group Life	29.7		34.1		90.6		102.6
Supplemental	14.3		14.0		38.7		42.3
	144.6		152.6		425.8		458.3
Colonial Life
Accident, Sickness, and Disability	196.5		190.7		591.1		569.0
Life	62.5		57.9		188.1		172.8
Cancer and Critical Illness	74.1		70.8		222.0		210.8
	333.1		319.4		1,001.2		952.6
Closed Block
Individual Disability	142.2		154.0		433.0		472.9
Long-term Care	158.6		158.3		475.0		471.9
All Other	0.5		0.2		1.2		0.7
	301.3		312.5		909.2		945.5
Total Premium Income	$	2,020.8	$	1,947.2	$	6,044.6	$	5,829.3

Selected Operating Statement Data by Segment

	Unum US		Unum UK		Colonial Life		Closed Block		Corporate			Total
	(in millions of dollars)
Three Months Ended September 30, 2015
Premium Income	$	1,241.8	$	144.6	$	333.1	$	301.3	$	—		$	2,020.8
Net Investment Income	214.3		28.0		35.9		327.5		6.4			612.1
Other Income	28.1		—		0.1		21.5		1.8			51.5
Operating Revenue	$	1,484.2	$	172.6	$	369.1	$	650.3	$	8.2		$	2,684.4
Operating Income (Loss)	$	218.7	$	32.7	$	76.3	$	27.7	$	(26.9	)	$	328.5
Three Months Ended September 30, 2014
Premium Income	$	1,162.7	$	152.6	$	319.4	$	312.5	$	—		$	1,947.2
Net Investment Income	214.4		34.4		35.5		317.2		9.8			611.3
Other Income	30.2		—		0.1		23.4		0.9			54.6
Operating Revenue	$	1,407.3	$	187.0	$	355.0	$	653.1	$	10.7		$	2,613.1
Operating Income (Loss)	$	212.1	$	33.5	$	71.0	$	25.7	$	(25.1	)	$	317.2

	Unum US		Unum UK		Colonial Life		Closed Block		Corporate			Total
	(in millions of dollars)
Nine Months Ended September 30, 2015
Premium Income	$	3,708.4	$	425.8	$	1,001.2	$	909.2	$	—		$	6,044.6
Net Investment Income	645.0		90.1		109.8		979.6		20.3			1,844.8
Other Income	90.4		—		0.1		67.5		2.6			160.6
Operating Revenue	$	4,443.8	$	515.9	$	1,111.1	$	1,956.3	$	22.9		$	8,050.0
Operating Income (Loss)	$	635.8	$	103.6	$	231.5	$	91.0	$	(90.2	)	$	971.7
Nine Months Ended September 30, 2014
Premium Income	$	3,472.9	$	458.3	$	952.6	$	945.5	$	—		$	5,829.3
Net Investment Income	655.7		112.3		107.9		958.5		25.1			1,859.5
Other Income	91.4		0.1		0.1		69.5		2.2			163.3
Operating Revenue	$	4,220.0	$	570.7	$	1,060.6	$	1,973.5	$	27.3		$	7,852.1
Operating Income (Loss)	$	635.4	$	109.6	$	225.0	$	90.6	$	(80.0	)	$	980.6

Assets by Segment

	September 30		December 31
	2015		2014
	(in millions of dollars)
Assets
Unum US	$	18,630.7	$	18,676.5
Unum UK	3,636.3		3,702.5
Colonial Life	3,770.3		3,692.2
Closed Block	33,431.9		33,960.2
Corporate	2,034.6		2,418.8
Total Assets	$	61,503.8	$	62,450.2

Reconciliation of Operating Revenue and Operating Income by Segment to Total Revenue and Income Before Income Tax

A reconciliation of "operating revenue" to total revenue and "operating income" to income before income tax is as follows:

	Three Months Ended September 30						Nine Months Ended September 30
	2015			2014			2015			2014
	(in millions of dollars)
Operating Revenue	$	2,684.4		$	2,613.1		$	8,050.0		$	7,852.1
Net Realized Investment Gain (Loss)	(26.6		)	1.2			(41.1		)	33.4
Total Revenue	$	2,657.8		$	2,614.3		$	8,008.9		$	7,885.5
Operating Income	$	328.5		$	317.2		$	971.7		$	980.6
Net Realized Investment Gain (Loss)	(26.6		)	1.2			(41.1		)	33.4
Non-operating Retirement-related Loss	(3.0		)	(1.4		)	(8.9		)	(4.2		)
Costs Related to Early Retirement of Debt	—			—			—			(13.2		)
Income Before Income Tax	$	298.9		$	317.0		$	921.7		$	996.6