Segment Information (Tables)

6 Months Ended

Jun. 30, 2016

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
	2016		2015		2016		2015
	(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability	$	432.9	$	409.4	$	863.5	$	814.7
Group Short-term Disability	156.2		151.6		313.7		299.3
Group Life and Accidental Death & Dismemberment
Group Life	348.7		336.0		700.2		671.0
Accidental Death & Dismemberment	34.9		33.3		69.5		65.9
Supplemental and Voluntary
Individual Disability	124.9		118.4		248.8		236.3
Voluntary Benefits	201.8		187.7		405.0		379.4
	1,299.4		1,236.4		2,600.7		2,466.6
Unum UK
Group Long-term Disability	95.5		99.4		188.6		195.9
Group Life	27.3		30.4		56.0		60.9
Supplemental	18.0		12.4		35.5		24.4
	140.8		142.2		280.1		281.2
Colonial Life
Accident, Sickness, and Disability	205.9		198.1		411.5		394.6
Life	67.7		63.3		135.4		125.6
Cancer and Critical Illness	77.8		74.5		155.7		147.9
	351.4		335.9		702.6		668.1
Closed Block
Individual Disability	130.5		144.3		264.1		290.8
Long-term Care	158.9		158.2		320.6		316.4
All Other	0.6		0.5		1.0		0.7
	290.0		303.0		585.7		607.9
Total Premium Income	$	2,081.6	$	2,017.5	$	4,169.1	$	4,023.8

Selected Operating Statement Data by Segment

	Unum US		Unum UK		Colonial Life		Closed Block		Corporate			Total
	(in millions of dollars)
Three Months Ended June 30, 2016
Premium Income	$	1,299.4	$	140.8	$	351.4	$	290.0	$	—		$	2,081.6
Net Investment Income	207.7		34.0		35.6		341.1		4.9			623.3
Other Income	27.9		0.2		0.3		21.4		1.3			51.1
Operating Revenue	$	1,535.0	$	175.0	$	387.3	$	652.5	$	6.2		$	2,756.0
Operating Income (Loss)	$	227.2	$	36.9	$	77.9	$	32.6	$	(35.7	)	$	338.9
Three Months Ended June 30, 2015
Premium Income	$	1,236.4	$	142.2	$	335.9	$	303.0	$	—		$	2,017.5
Net Investment Income	215.7		38.6		36.9		331.7		7.8			630.7
Other Income	31.4		—		—		22.8		0.5			54.7
Operating Revenue	$	1,483.5	$	180.8	$	372.8	$	657.5	$	8.3		$	2,702.9
Operating Income (Loss)	$	202.8	$	38.3	$	77.6	$	36.6	$	(33.4	)	$	321.9

	Unum US		Unum UK		Colonial Life		Closed Block		Corporate			Total
	(in millions of dollars)
Six Months Ended June 30, 2016
Premium Income	$	2,600.7	$	280.1	$	702.6	$	585.7	$	—		$	4,169.1
Net Investment Income	415.1		60.8		69.6		674.5		9.7			1,229.7
Other Income	56.9		0.2		0.6		43.8		1.6			103.1
Operating Revenue	$	3,072.7	$	341.1	$	772.8	$	1,304.0	$	11.3		$	5,501.9
Operating Income (Loss)	$	443.1	$	70.5	$	155.3	$	66.3	$	(67.5	)	$	667.7
Six Months Ended June 30, 2015
Premium Income	$	2,466.6	$	281.2	$	668.1	$	607.9	$	—		$	4,023.8
Net Investment Income	430.7		62.1		73.9		652.1		13.9			1,232.7
Other Income	62.3		—		—		46.0		0.8			109.1
Operating Revenue	$	2,959.6	$	343.3	$	742.0	$	1,306.0	$	14.7		$	5,365.6
Operating Income (Loss)	$	417.1	$	70.9	$	155.2	$	63.3	$	(63.3	)	$	643.2

	June 30		December 31
	2016		2015
	(in millions of dollars)
Assets
Unum US	$	18,310.8	$	18,242.4
Unum UK	3,325.2		3,432.4
Colonial Life	3,874.2		3,776.8
Closed Block	34,559.8		33,000.9
Corporate	3,783.1		2,111.1
Total Assets	$	63,853.1	$	60,563.6

Assets by Segment

	June 30		December 31
	2016		2015
	(in millions of dollars)
Assets
Unum US	$	18,310.8	$	18,242.4
Unum UK	3,325.2		3,432.4
Colonial Life	3,874.2		3,776.8
Closed Block	34,559.8		33,000.9
Corporate	3,783.1		2,111.1
Total Assets	$	63,853.1	$	60,563.6

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

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

	Three Months Ended June 30						Six Months Ended June 30
	2016			2015			2016			2015
	(in millions of dollars)
Total Revenue	$	2,761.3		$	2,703.7		$	5,486.7		$	5,351.1
Excluding:
Net Realized Investment Gain (Loss)	5.3			0.8			(15.2		)	(14.5		)
Operating Revenue	$	2,756.0		$	2,702.9		$	5,501.9		$	5,365.6
Income Before Income Tax	$	340.2		$	319.8		$	644.4		$	622.8
Excluding:
Net Realized Investment Gain (Loss)	5.3			0.8			(15.2		)	(14.5		)
Non-operating Retirement-related Loss	(4.0		)	(2.9		)	(8.1		)	(5.9		)
Operating Income	$	338.9		$	321.9		$	667.7		$	643.2