Earnings Per Common Share

9 Months Ended

Sep. 30, 2011

Earnings Per Common Share [Abstract]

Earnings Per Common Share

4. Earnings per Common Share

Earnings per share ("EPS") is computed under the two-class method using the following common share information:

	Quarter Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
(dollars and shares in millions)
EPS Numerator:
Net income attributable to common shareholders	$	130.1	$	127.5	$	214.2	$	373.0
Less: Income allocated to participating securities		2.3		1.3		4.0		4.1
Net income available to common shareholders	$	127.8	$	126.2	$	210.2	$	368.9
EPS Denominator:
Weighted average common shares outstanding		86.6		93.3		86.0		94.4
Dilutive common share equivalents from share-based compensation plans		1.2		1.0		1.7		1.1
Weighted average common and common equivalent shares outstanding, assuming dilution		87.8		94.3		87.7		95.5