SHARE-BASED COMPENSATION SHARE-BASED COMP - Options by Range of Excerise Prices (Details) (Stock Options [Member], Third Amended 2003 Plan [Member], USD $)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options, Outstanding, Number	3,594,246	3,596,871	3,014,220
Weighted Average Exercise Price - Outstanding	$ 21.75	$ 21.51	$ 20.69
Options, Exercisable, Number	2,478,000	1,814,539
Exercisable, Weighted Average Exercise Price	$ 19.86	$ 19.83
Excercise Price Range - 12.55 - 15.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options, Outstanding, Number	792,934
Weighted Average Exercise Price - Outstanding	$ 12.55
Options, Exercisable, Number	792,934
Exercisable, Weighted Average Exercise Price	$ 12.55
Excercise Price Range - 15.01 - 20.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options, Outstanding, Number	205,573
Weighted Average Exercise Price - Outstanding	$ 16.90
Options, Exercisable, Number	205,573
Exercisable, Weighted Average Exercise Price	$ 16.90
Excercise Price Range - 20.01 - 25.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options, Outstanding, Number	1,726,790
Weighted Average Exercise Price - Outstanding	$ 23.28
Options, Exercisable, Number	1,127,284
Exercisable, Weighted Average Exercise Price	$ 23.04
Excercise Price Range - 25.01 - 28.49 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options, Outstanding, Number	868,949
Weighted Average Exercise Price - Outstanding	$ 28.23
Options, Exercisable, Number	352,209
Exercisable, Weighted Average Exercise Price	$ 27.85