EARNINGS PER SHARE (Details 2) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2012 RSUs	Jun. 30, 2011 RSUs	Sep. 30, 2012 RSUs	Sep. 30, 2011 RSUs	Sep. 30, 2012 PSUs	Sep. 30, 2011 PSUs	Sep. 30, 2012 PSUs	Sep. 30, 2011 PSUs
Anti-dilutive weighted average common shares
Potentially dilutive securities excluded from calculation of diluted earnings per share (in shares)	0.3	0.8	0.7	1.3	0.6	3.3	0.6	3.3
PSUs included in calculation of diluted earnings per share					2.3		2.3