Earnings Per Share

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share

NOTE 11. Earnings Per Share

          Basic earnings per share were computed by dividing net income available to common shareholders by the weighted average number of shares of common stock outstanding during each period. Shares issued or reacquired during the period, if applicable, were weighted for the portion of the period that they were outstanding. Diluted earnings per share give effect to potentially dilutive securities, including convertible preferred stock, employee stock options/SARs, restricted stock and convertible debt.

          The following table sets forth the computation of basic and diluted net income per common share (in millions, except per share amounts):

	Three Months Ended				Six Months Ended
	June 30				June 30
	2011		2010		2011		2010
Numerator:
Net income	$	26.4	$	21.5	$	46.3	$	40.2
Numerator for basic earnings per share — income available to common shareholders	$	26.4	$	21.5	$	46.3	$	40.2
Effect of dilutive securities:
After-tax interest expense on convertible securities		—		—		—		0.2
Numerator for diluted earnings per share — income available to common shareholders	$	26.4	$	21.5	$	46.3	$	40.4
Denominator:
Denominator for basic earnings per share — weighted average shares		46.4		46.2		46.4		46.1
Effect of dilutive securities:
Equity compensation plans		0.7		0.4		0.6		0.4
Convertible preferred stock		0.1		0.1		0.1		0.1
Convertible securities		—		—		—		0.5
Denominator for diluted earnings per share — adjusted weighted average and assumed conversion		47.2		46.7		47.1		47.1
Basic earnings per share	$	0.57	$	0.47	$	1.00	$	0.87
Diluted earnings per share	$	0.56	$	0.46	$	0.98	$	0.86