STOCK PLANS AND SHARE-BASED COMPENSATION (Option Activity) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012 years	Sep. 30, 2011	Sep. 30, 2012 years	Sep. 30, 2011
Option activity under the Plans
Outstanding, shares, at January 1, 2012			3,557
Outstanding, weighted-average exercise price, at January 1, 2012			$ 24.01
Granted, shares			135
Granted, weighted-average exercise price	$ 42.66		$ 42.66
Exercised, shares			(663)
Exercised, weighted-average exercise price	$ 20.85		$ 20.85
Forfeited or expired, shares			(5)
Forfeited or expired, weighted-average exercise price			$ 21.09
Outstanding, shares, at September 30, 2012	3,024		3,024
Outstanding, weighted-average exercise price, at September 30, 2012	$ 25.54		$ 25.54
Outstanding, weighted-average remaining contractual term (in years)	4.39		4.39
Outstanding, aggregate intrinsic value	$ 18,744,000		$ 18,744,000
Exercisable, shares, at September 30, 2012	2,573		2,573
Exercisable, weighted-average exercise price, at September 30, 2012	$ 23.88		$ 23.88
Exercisable, weighted-average remaining contractual term, at September 30, 2012 (in years)			3.71
Exercisable, aggregate intrinsic value, at September 30, 2012	17,876,000		17,876,000
Vested and expected to vest, shares, at September 30, 2012	3,003		3,003
Vested and expected to vest, weighted-average exercise price, at September 30, 2012	$ 25.44		$ 25.44
Vested and expected to vest, weighted-average remaining contractual term, at September 30, 2012 (in years)			4.36
Vested and expected to vest, aggregate intrinsic value, at September 30, 2012	18,741,000		18,741,000
Intrinsic Value of Options Excercised	$ 900,000	$ 1,800,000	$ 12,400,000	$ 13,400,000