Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment Reporting [Abstract]

Reconciliation of Total Operating Revenue and Operating Income by Segment to Revenue and Net Income

A reconciliation of total operating revenue and operating income by segment to revenue and net income as reported in our consolidated statements of income follows:

	Year Ended December 31
	2011			2010		2009
	(in millions of dollars)
Operating Revenue by Segment	$	10,282.9		$	10,168.5	$	10,079.3
Net Realized Investment Gain (Loss)	(4.9		)	24.7		11.7
Revenue	$	10,278.0		$	10,193.2	$	10,091.0
Operating Income by Segment	$	262.1		$	1,306.6	$	1,280.6
Net Realized Investment Gain (Loss)	(4.9		)	24.7		11.7
Income Tax	21.8			445.2		439.7
Net Income	$	235.4		$	886.1	$	852.6

Premium Income by Major Line of Business within Each Segment

Premium income by major line of business within each of our segments is presented as follows.

	Year Ended December 31
	2011		2010		2009
	(in millions of dollars)
Unum US
Group Disability
Group Long-term Disability	$	1,580.2	$	1,639.4	$	1,726.9
Group Short-term Disability	455.2		430.9		432.8
Group Life and Accidental Death & Dismemberment
Group Life	1,106.7		1,090.3		1,057.7
Accidental Death & Dismemberment	109.2		106.1		104.9
Supplemental and Voluntary
Individual Disability - Recently Issued	464.7		457.9		463.7
Voluntary Benefits	580.0		530.8		492.4
	4,296.0		4,255.4		4,278.4
Unum UK
Group Long-term Disability	419.6		421.2		482.4
Group Life	203.6		171.6		147.8
Supplemental and Voluntary	64.4		57.8		55.9
	687.6		650.6		686.1
Colonial Life
Accident, Sickness, and Disability	695.3		661.0		625.8
Life	190.7		176.5		165.6
Cancer and Critical Illness	249.3		238.2		223.7
	1,135.3		1,075.7		1,015.1
Closed Block
Individual Disability	787.0		847.0		898.5
Long-term Care	608.1		599.2		594.7
All Other	0.2		3.5		2.7
	1,395.3		1,449.7		1,495.9
Total	$	7,514.2	$	7,431.4	$	7,475.5

Selected Operating Statement Data by Segment

Selected operating statement data by segment is presented as follows:

	Unum US		Unum UK		Colonial Life		Closed Block			Corporate			Total
	(in millions of dollars)
Year Ended December 31, 2011
Premium Income	$	4,296.0	$	687.6	$	1,135.3	$	1,395.3		$	—		$	7,514.2
Net Investment Income	951.4		189.9		132.4		1,189.7			56.2			2,519.6
Other Income	121.6		0.3		0.5		106.1			20.6			249.1
Operating Revenue	$	5,369.0	$	877.8	$	1,268.2	$	2,691.1		$	76.8		$	10,282.9
Operating Income (Loss)	$	819.8	$	192.0	$	282.1	$	(921.5	)	$	(110.3	)	$	262.1
Interest and Debt Expense	$	1.0	$	—	$	—	$	10.5		$	131.8		$	143.3
Depreciation and Amortization	$	356.5	$	40.7	$	202.4	$	22.7		$	0.8		$	623.1
Year Ended December 31, 2010
Premium Income	$	4,255.4	$	650.6	$	1,075.7	$	1,449.7		$	—		$	7,431.4
Net Investment Income	941.5		170.5		122.5		1,166.4			94.6			2,495.5
Other Income	122.8		1.2		0.7		113.6			3.3			241.6
Operating Revenue	$	5,319.7	$	822.3	$	1,198.9	$	2,729.7		$	97.9		$	10,168.5
Operating Income (Loss)	$	769.1	$	208.8	$	282.2	$	117.6		$	(71.1	)	$	1,306.6
Interest and Debt Expense	$	1.2	$	—	$	—	$	11.7		$	128.9		$	141.8
Depreciation and Amortization	$	360.9	$	38.2	$	200.1	$	31.6		$	1.1		$	631.9
Year Ended December 31, 2009
Premium Income	$	4,278.4	$	686.1	$	1,015.1	$	1,495.9		$	—		$	7,475.5
Net Investment Income	934.3		124.5		114.3		1,106.8			66.7			2,346.6
Other Income	118.8		2.4		0.5		131.1			4.4			257.2
Operating Revenue	$	5,331.5	$	813.0	$	1,129.9	$	2,733.8		$	71.1		$	10,079.3
Operating Income (Loss)	$	717.6	$	249.6	$	280.9	$	124.4		$	(91.9	)	$	1,280.6
Interest and Debt Expense	$	2.0	$	—	$	—	$	16.6		$	106.8		$	125.4
Depreciation and Amortization	$	344.7	$	42.4	$	192.0	$	29.6		$	1.6		$	610.3

Deferred Policy Acquisition Costs

The following table provides the changes in deferred acquisition costs by segment:

							Colonial			Closed
	Unum US			Unum UK			Life			Block			Total
	(in millions of dollars)
Year Ended December 31, 2011
Beginning of Year	$	1,362.2		$	58.2		$	805.0		$	295.7		$	2,521.1
Capitalized	333.8			30.6			252.9			11.0			628.3
Amortization	(298.7		)	(29.2		)	(189.0		)	(16.9		)	(533.8		)
Impairment of Long-term Care Deferred Acquisition Costs	—			—			—			(289.8		)	(289.8		)
Adjustment Related to Unrealized Investment Gains/Losses	(5.0		)	—			(19.7		)	—			(24.7		)
Foreign Currency	—			(0.2		)	—			—			(0.2		)
End of Year	$	1,392.3		$	59.4		$	849.2		$	—		$	2,300.9
Year Ended December 31, 2010
Beginning of Year	$	1,351.5		$	58.9		$	761.2		$	310.9		$	2,482.5
Capitalized	323.2			28.3			246.4			9.8			607.7
Amortization	(307.9		)	(27.0		)	(187.2		)	(25.0		)	(547.1		)
Adjustment Related to Unrealized Investment Gains/Losses	(4.6		)	—			(15.4		)	—			(20.0		)
Foreign Currency	—			(2.0		)	—			—			(2.0		)
End of Year	$	1,362.2		$	58.2		$	805.0		$	295.7		$	2,521.1
Year Ended December 31, 2009
Beginning of Year	$	1,341.4		$	54.7		$	755.9		$	320.4		$	2,472.4
Capitalized	321.6			29.1			229.0			13.9			593.6
Amortization	(293.8		)	(30.5		)	(178.5		)	(23.4		)	(526.2		)
Adjustment Related to Unrealized Investment Gains/Losses	(17.7		)	—			(45.2		)	—			(62.9		)
Foreign Currency	—			5.6			—			—			5.6
End of Year	$	1,351.5		$	58.9		$	761.2		$	310.9		$	2,482.5

Assets by Segment

Assets by segment are as follows:

	December 31
	2011		2010
	(in millions of dollars)
Unum US	$	19,004.1	$	18,572.1
Unum UK	3,568.1		3,386.3
Colonial Life	3,352.5		3,047.3
Closed Block	31,439.5		29,418.7
Corporate	2,814.8		2,883.3
Total	$	60,179.0	$	57,307.7