Capital Stock

12 Months Ended

Dec. 31, 2019

Stockholders Equity Note [Abstract]

Capital Stock

Note 9 — Capital Stock

Common Stock Outstanding

Common stock outstanding as of December 31, 2019, 2018 and 2017 was as follows:

(Number of shares in millions)	2019		2018		2017
Common stock:
Balance, beginning of year	108.5		107.8			106.7
Activity under stock plans	0.8		0.7		1.1
Balance, end of year	109.3		108.5			107.8
Treasury stock:
Balance, beginning of year	23.7		18.2		15.3
Repurchased		2.0		5.5	2.9
Balance, end of year	25.7		23.7		18.2
Common stock outstanding	83.6		84.8		89.6

In May 2018, our Board authorized the repurchase of $500 million of the Company’s stock (“2018 Repurchase Plan”). During 2019, 2018 and 2017, the Company spent $143.0 million, $357.7 million and $150.3 million to repurchase common stock, respectively. At December 31, 2019, we have $241.8 million remaining under the 2018 Repurchase Plan. 

Dividends per share of common stock for 2019, 2018, and 2017, were $0.64, $0.55, and $0.47, respectively.