Stockholders' Equity and Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2016

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
	2016		2015		2016		2015
	(in millions of dollars, except share data)
Numerator
Net Income	$	236.0	$	203.8	$	683.4	$	641.0
Denominator (000s)
Weighted Average Common Shares - Basic	233,752.0		245,400.0		236,744.3		248,372.9
Dilution for Assumed Exercises of Stock Options and Nonvested Stock Awards	461.5		924.4		399.5		855.2
Weighted Average Common Shares - Assuming Dilution	234,213.5		246,324.4		237,143.8		249,228.1
Net Income Per Common Share
Basic	$	1.01	$	0.83	$	2.89	$	2.58
Assuming Dilution	$	1.01	$	0.83	$	2.88	$	2.57

Treasury Stock Transactions

Common Stock

During the second quarter of 2016, our board of directors authorized the repurchase of up to $750.0 million of Unum Group's outstanding common stock through November 26, 2017. This authorization replaced the previous authorization of $750.0 million that was scheduled to expire on November 21, 2016. The remaining repurchase amount under the new program was $598.6 million at September 30, 2016.

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

	Three Months Ended September 30				Nine Months Ended September 30
	2016		2015		2016		2015
	(in millions)
Shares Repurchased	2.9		3.2		9.4		9.4
Cost of Shares Repurchased (1)	$	100.2	$	115.0	$	300.3	$	326.2

(1) Includes commissions of $0.1 million and $0.2 million for the three and nine month period ended September 30, 2016, respectively, and $0.1 million for the nine months ended September 30, 2015. For the three month period ended September 30, 2015 there was a de minimis amount of commissions.