TREASURY STOCK PURCHASE (Details) (2011-2012 Repurchase Plan, USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended	1 Months Ended		9 Months Ended
	Aug. 13, 2012	Aug. 31, 2012	Oct. 31, 2011	Sep. 30, 2012
2011-2012 Repurchase Plan
TREASURY STOCK PURCHASE
Amount of common stock the board of directors authorized to repurchase		$ 500.0	$ 250.0
Additional amount of common stock authorized to be purchased by the Board of Directors	250.0
Common stock repurchased (in shares)				6.9
Average purchase price (in dollars per share)				$ 57.99
Common stock repurchased				$ 397.5
Additional shares purchased, subsequent to period				1.9
Average purchase price, subsequent to period (in dollars per share)				$ 54.99