INCOME TAXES (Schedule of Income Before Income Tax, Domestic and Foreign) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2010		Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Income Tax Disclosure [Abstract]
Domestic income loss																	$ (35,685)	$ (22,954)	$ (24,550)
Foreign income																	348,989	347,801	344,529
Income before income taxes	$ 109,891	[1]	$ 61,990	[1]	$ 63,492	[1]	$ 77,931	[1]	$ 83,919	[1]	$ 87,203	[1]	$ 90,485	[1]	$ 63,240	[1]	$ 313,304	$ 324,847	$ 319,979

[1] The sum of the individual quarterly net income per common share amounts may not agree with year-to-date net income per common share as each quarterly computation is based on the weighted average number of common shares outstanding during that period.