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Schedule III Supplmentary Insurance Information (Tables)
 12 Months Ended
Dec. 31, 2012
Schedule III - Supplementary Insurance Info [Abstract]  
Supplementary Information for Insurance Companies
Segment
Deferred Acquisition Costs
 
Reserves for Future Policy Contract Benefits
 
Unearned Premiums
 
Policy and Contract Benefits
 
(in millions of dollars)
December 31, 2012
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unum US
$
1,024.3

 
$
12,449.3

 
$
46.1

 
$
890.3

Unum UK
38.8

 
2,487.1

 
142.9

 
155.7

Colonial Life
692.4

 
1,691.3

 
29.9

 
149.8

Closed Block
—

 
28,066.7

 
207.8

 
288.8

   Total
$
1,755.5

 
$
44,694.4

 
$
426.7

 
$
1,484.6

 
 
 
 
 
 
 
 
December 31, 2011 - As Adjusted (1)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unum US
$
971.8

 
$
12,280.2

 
$
43.4

 
$
889.2

Unum UK
40.9

 
2,172.5

 
143.2

 
135.6

Colonial Life
664.4

 
1,598.1

 
28.5

 
134.7

Closed Block
—

 
27,001.1

 
218.1

 
334.5

   Total
$
1,677.1

 
$
43,051.9

 
$
433.2

 
$
1,494.0

SCHEDULE III--SUPPLEMENTARY INSURANCE INFORMATION

Unum Group and Subsidiaries

(continued from preceding page)

Segment
Premium Income
 
Net Investment Income (2)
 
Benefits and Change in Reserves for Future Benefits (3)
 
Amortization of Deferred Acquisition Costs
 
All Other Expenses (4)
 
Premiums Written (5)
 
(in millions of dollars)
December 31, 2012
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unum US
$
4,456.5

 
$
952.3

 
$
3,238.6

 
$
196.5

 
$
1,251.2

 
$
3,045.0

Unum UK
694.6

 
170.8

 
541.4

 
15.7

 
177.1

 
466.3

Colonial Life
1,194.5

 
138.6

 
627.3

 
166.5

 
265.3

 
986.3

Closed Block
1,370.5

 
1,230.5

 
2,314.9

 
—

 
290.7

 
1,358.6

Corporate
—

 
23.0

 
—

 
—

 
180.7

 
—

   Total
$
7,716.1

 
$
2,515.2

 
$
6,722.2

 
$
378.7

 
$
2,165.0

 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2011 - As Adjusted (1)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unum US
$
4,296.0

 
$
951.4

 
$
3,113.5

 
$
188.1

 
$
1,250.5

 
$
2,965.8

Unum UK
687.6

 
189.9

 
493.8

 
15.3

 
178.0

 
480.0

Colonial Life
1,135.3

 
132.4

 
589.4

 
151.2

 
257.5

 
944.9

Closed Block
1,395.3

 
1,189.7

 
3,012.8

 
11.1

 
496.4

 
1,385.1

Corporate
—

 
56.2

 
—

 
—

 
187.1

 
—

   Total
$
7,514.2

 
$
2,519.6

 
$
7,209.5

 
$
365.7

 
$
2,369.5

 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2010 - As Adjusted (1)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unum US
$
4,255.4

 
$
941.5

 
$
3,124.4

 
$
192.6

 
$
1,233.7

 
$
2,938.9

Unum UK
650.6

 
170.5

 
435.8

 
13.6

 
163.9

 
469.4

Colonial Life
1,075.7

 
122.5

 
534.7

 
150.1

 
244.4

 
901.9

Closed Block
1,449.7

 
1,166.4

 
2,259.2

 
17.0

 
334.9

 
1,430.4

Corporate
—

 
94.6

 
—

 
—

 
169.0

 
—

   Total
$
7,431.4

 
$
2,495.5

 
$
6,354.1

 
$
373.3

 
$
2,145.9