Capital Stock

12 Months Ended

Dec. 31, 2015

Stockholders Equity Note [Abstract]

Capital Stock

Note 9 — Capital Stock

Common Stock Outstanding

Common stock outstanding as of December 31, 2015, 2014 and 2013 was as follows:

(Number of shares in millions)	2015		2014		2013
Common stock:
Balance, beginning of year		104.8		104.0		102.4
Activity under stock plans		1.2		0.8		1.6
Balance, end of year		106.0		104.8		104.0
Treasury stock:
Balance, beginning of year		9.3		5.1		2.5
Repurchased		3.2		4.2		2.6
Balance, end of year		12.5		9.3		5.1
Common stock outstanding		93.5		95.5		98.9

In October 2015, our Board authorized the repurchase of an additional $250 million of the Company’s stock (“2015 Repurchase Plan”). During 2015, the Company spent $146.1 million to repurchase common stock. This included $100 million to complete the 2014 Repurchase Plan and $46.1 million under the 2015 Repurchase Plan to repurchase common stock.

In June 2014, our Board authorized a plan to repurchase $150 million of our outstanding common stock (“2014 Repurchase Plan”). In July 2013, our Board authorized us to repurchase $150 million of our outstanding common stock (“2013 Repurchase Plan”), which was completed during the second quarter of 2014. During 2014, the Company spent $160.0 million to repurchase shares of common stock under the approved plans.