Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

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
	2015		2014		2015		2014
	(in millions of dollars)
Premium Income
Unum US
Group Disability
Group Long-term Disability	$	409.4	$	386.2	$	814.7	$	769.7
Group Short-term Disability	151.6		137.8		299.3		275.1
Group Life and Accidental Death & Dismemberment
Group Life	336.0		313.2		671.0		623.1
Accidental Death & Dismemberment	33.3		31.1		65.9		61.7
Supplemental and Voluntary
Individual Disability	118.4		116.0		236.3		231.9
Voluntary Benefits	187.7		173.4		379.4		348.7
	1,236.4		1,157.7		2,466.6		2,310.2
Unum UK
Group Long-term Disability	99.4		105.9		195.9		208.9
Group Life	30.4		33.7		60.9		68.5
Supplemental	12.4		14.4		24.4		28.3
	142.2		154.0		281.2		305.7
Colonial Life
Accident, Sickness, and Disability	198.1		189.2		394.6		378.3
Life	63.3		57.5		125.6		114.9
Cancer and Critical Illness	74.5		70.1		147.9		140.0
	335.9		316.8		668.1		633.2
Closed Block
Individual Disability	144.3		157.8		290.8		318.9
Long-term Care	158.2		157.1		316.4		313.6
All Other	0.5		0.2		0.7		0.5
	303.0		315.1		607.9		633.0
Total Premium Income	$	2,017.5	$	1,943.6	$	4,023.8	$	3,882.1

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, 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
Three Months Ended June 30, 2014
Premium Income	$	1,157.7	$	154.0	$	316.8	$	315.1	$	—		$	1,943.6
Net Investment Income	218.2		44.3		35.8		325.8		8.3			632.4
Other Income	30.3		0.2		0.1		24.5		(0.2		)	54.9
Operating Revenue	$	1,406.2	$	198.5	$	352.7	$	665.4	$	8.1		$	2,630.9
Operating Income (Loss)	$	215.8	$	39.6	$	74.9	$	36.6	$	(28.4	)	$	338.5

	Unum US		Unum UK		Colonial Life		Closed Block		Corporate			Total
	(in millions of dollars)
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
Six Months Ended June 30, 2014
Premium Income	$	2,310.2	$	305.7	$	633.2	$	633.0	$	—		$	3,882.1
Net Investment Income	441.3		77.9		72.4		641.3		15.3			1,248.2
Other Income	61.2		0.1		—		46.1		1.3			108.7
Operating Revenue	$	2,812.7	$	383.7	$	705.6	$	1,320.4	$	16.6		$	5,239.0
Operating Income (Loss)	$	423.3	$	76.1	$	154.0	$	64.9	$	(54.9	)	$	663.4

Assets by Segment

	June 30		December 31
	2015		2014
	(in millions of dollars)
Assets
Unum US	$	18,644.8	$	18,676.5
Unum UK	3,750.4		3,702.5
Colonial Life	3,770.9		3,692.2
Closed Block	33,418.9		33,960.2
Corporate	2,121.8		2,418.8
Total Assets	$	61,706.8	$	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 June 30						Six Months Ended June 30
	2015			2014			2015			2014
	(in millions of dollars)
Operating Revenue	$	2,702.9		$	2,630.9		$	5,365.6		$	5,239.0
Net Realized Investment Gain (Loss)	0.8			25.9			(14.5		)	32.2
Total Revenue	$	2,703.7		$	2,656.8		$	5,351.1		$	5,271.2
Operating Income	$	321.9		$	338.5		$	643.2		$	663.4
Net Realized Investment Gain (Loss)	0.8			25.9			(14.5		)	32.2
Non-operating Retirement-related Loss	(2.9		)	(1.4		)	(5.9		)	(2.8		)
Costs Related to Early Retirement of Debt	—			(13.2		)	—			(13.2		)
Income Before Income Tax	$	319.8		$	349.8		$	622.8		$	679.6