Stockholders' Equity and Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2015

Stockholders' Equity and Earnings Per Common Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

Net income per common share is determined as follows:

	Three Months Ended March 31
	2015		2014
	(in millions of dollars, except share data)
Numerator
Net Income	$	212.9	$	225.8
Denominator (000s)
Weighted Average Common Shares - Basic	251,467.4		259,408.5
Dilution for Assumed Exercises of Stock Options and Nonvested Stock Awards	767.5		1,301.4
Weighted Average Common Shares - Assuming Dilution	252,234.9		260,709.9
Net Income Per Common Share
Basic	$	0.85	$	0.87
Assuming Dilution	$	0.84	$	0.86

Treasury Stock Transactions

Our board of directors has authorized the repurchase of Unum Group's common stock under the following repurchase program, which has an expiration date of June 12, 2015.

	Authorized During
	December 2013
	(in millions of dollars)
Authorized Repurchase Amount	$	750.0
Remaining Repurchase Amount at March 31, 2015	$	321.5

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

	Three Months Ended March 31
	2015		2014
	(in millions)
Shares Repurchased	3.2		2.9
Cost of Shares Repurchased (1)	$	108.1	$	100.1

(1) Includes commissions of $0.1 million and a de minimis amount for the three month periods ended March 31, 2015 and 2014, respectively.