EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2012

EARNINGS PER SHARE [Abstract]

Basic and Diluted Earnings Per Share Table

	Three Months Ended March 31,
	2012		2011
Computation of Income per Share	($ and shares in millions, except per share data)
Net income	$	38.7	$	133.7
Basic shares		80.1		79.6
Basic net income per share	$	0.48	$	1.68
Diluted shares:
Basic shares		80.1		79.6
Stock-based compensation		0.8		0.8
Diluted shares		80.9		80.4
Diluted net income per share	$	0.48	$	1.66