STOCK PLANS AND SHARE-BASED COMPENSATION (Option Activity) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 years	Jun. 30, 2011	Jun. 30, 2012 years	Jun. 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			129
Granted, weighted-average exercise price	$ 42.88		$ 42.88
Exercised, shares			(584)
Exercised, weighted-average exercise price	$ 20.49		$ 20.49
Forfeited or expired, shares			(3)
Forfeited or expired, weighted-average exercise price			$ 21.09
Outstanding, shares, at June 30, 2012	3,099		3,099
Outstanding, weighted-average exercise price, at June 30, 2012	$ 25.46		$ 25.46
Outstanding, weighted-average remaining contractual term (in years)	4.59		4.59
Outstanding, aggregate intrinsic value	$ 37,602,000		$ 37,602,000
Exercisable, shares, at June 30, 2012	2,576		2,576
Exercisable, weighted-average exercise price, at June 30, 2012	$ 23.82		$ 23.82
Exercisable, weighted-average remaining contractual term, at June 30, 2012 (in years)			3.83
Exercisable, aggregate intrinsic value, at June 30, 2012	34,766,000		34,766,000
Vested and expected to vest, shares, at June 30, 2012	3,073		3,073
Vested and expected to vest, weighted-average exercise price, at June 30, 2012	$ 25.34		$ 25.34
Vested and expected to vest, weighted-average remaining contractual term, at June 30, 2012 (in years)			4.55
Vested and expected to vest, aggregate intrinsic value, at June 30, 2012	37,575,000		37,575,000
Intrinsic Value of Options Excercised	$ 7,600,000	$ 5,400,000	$ 11,500,000	$ 11,600,000