Common stock

3 Months Ended

Mar. 31, 2012

Notes to Financial Statements [Abstract]

Common stock

Note 6 – Capital stock

Shelf Registration of Common Stock

On February 28, 2012, we filed a shelf registration statement under Form S-3ASR with the SEC for $150 million of our common stock. Under this shelf registration, we are able to issue up to $150 million of new common stock. On March 6, 2012, we issued 361,446 shares of our common stock and contributed the shares to our primary U.S. pension plan. Sales of these shares by the plan are covered under our shelf registration statement. The common stock was valued for purposes of the contribution at $24.90 per share, or $9 million in the aggregate, which reflected a 2.4% discount from the $25.51 per share closing share price of our common stock on March 5, 2012.

Shares Used to Calculate Earnings per Share

		Three Months
		Ended March 31,
(In millions)		2012	2011
Weighted-average shares:
	Basic (a)	48.1	47.6
	Effect of dilutive stock options and awards	0.2	0.5
	Diluted	48.3	48.1
Antidilutive stock options and awards excluded from denominator		2.6	2.2

(a)              We have deferred compensation plans for directors and certain of our employees. Amounts owed to participants are denominated in common stock units. Each unit represents one share of common stock. The number of shares used to calculate basic earnings per share includes the weighted-average units credited to employees and directors under the deferred compensation plans. Accordingly, included in basic shares are 1.2 million weighted-average units in the three months ended March 31, 2012, and 1.1 million weighted-average units in the three months ended March 31, 2011.