Stockholders' Equity and Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2017

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 June 30				Six Months Ended June 30
	2017		2016		2017		2016
	(in millions of dollars, except share data)
Numerator
Net Income	$	245.1	$	236.8	$	475.0	$	447.4
Denominator (000s)
Weighted Average Common Shares - Basic	227,454.4		236,892.8		228,437.0		238,254.3
Dilution for Assumed Exercises of Stock Options and Nonvested Stock Awards	724.3		426.0		836.8		368.5
Weighted Average Common Shares - Assuming Dilution	228,178.7		237,318.8		229,273.8		238,622.8
Net Income Per Common Share
Basic	$	1.08	$	1.00	$	2.08	$	1.88
Assuming Dilution	$	1.07	$	1.00	$	2.07	$	1.87

Treasury Stock Transactions

Common Stock

During the second quarter of 2017, our board of directors authorized the repurchase of up to $750.0 million of Unum Group's outstanding common stock through November 25, 2018. This authorization replaced the previous authorization of $750.0 million that was scheduled to expire on November 26, 2017. The remaining repurchase amount under the new program was $712.9 million at June 30, 2017.

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 June 30				Six Months Ended June 30
	2017		2016		2017		2016
	(in millions)
Shares Repurchased	2.2		2.8		4.3		6.5
Cost of Shares Repurchased (1)	$	100.1	$	100.1	$	200.1	$	200.1

(1) Includes commissions of $0.1 million for the three and six month periods ended June 30, 2017 and 2016.