Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings Per Share

The calculation of basic and diluted earnings per share for each period presented was as follows (dollars and shares in millions, except per share amounts):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Net income	$	223.6	$	164.5	$	532.2	$	422.1
Average shares outstanding (basic)		246.4		245.1		246.3		244.9
Common stock equivalents		1.7		2.0		1.7		2.1
Incremental shares from assumed conversion of convertible debentures		–		–		–		2.8
Diluted shares		248.1		247.1		248.0		249.8
Basic earnings per share	$	0.91	$	0.67	$	2.16	$	1.72
Diluted earnings per share	$	0.90	$	0.67	$	2.15	$	1.69