Stockholders' Equity and Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2015

Stockholders' Equity and Earnings Per Common Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

Earnings Per Common Share

Net income per common share is determined as follows:

	Three Months Ended September 30				Nine Months Ended September 30
	2015		2014		2015		2014
	(in millions of dollars, except share data)
Numerator
Net Income	$	203.8	$	219.1	$	641.0	$	684.3
Denominator (000s)
Weighted Average Common Shares - Basic	245,400.0		253,586.1		248,372.9		256,573.6
Dilution for Assumed Exercises of Stock Options and Nonvested Stock Awards	924.4		1,209.4		855.2		1,210.1
Weighted Average Common Shares - Assuming Dilution	246,324.4		254,795.5		249,228.1		257,783.7
Net Income Per Common Share
Basic	$	0.83	$	0.86	$	2.58	$	2.67
Assuming Dilution	$	0.83	$	0.86	$	2.57	$	2.66

Treasury Stock Transactions

During the second quarter of 2015, our board of directors authorized the repurchase of up to $750.0 million of Unum Group's outstanding common stock through November 21, 2016. This authorization replaced the previous authorization of $750.0 million that was scheduled to expire on June 12, 2015. The remaining repurchase amount under the new program was $602.7 million at September 30, 2015.

Common stock repurchases, which are classified as treasury stock and accounted for using the cost method, were as follows:

	Three Months Ended September 30				Nine Months Ended September 30
	2015		2014		2015		2014
	(in millions)
Shares Repurchased	3.2		2.9		9.4		8.7
Cost of Shares Repurchased (1)	$	115.0	$	100.5	$	326.2	$	300.6

(1) Includes commissions of $0.1 million for each of the nine month periods ended September 30, 2015 and 2014, and a de minimis amount for each of the three month periods ended September 30, 2015 and 2014.