INCOME TAXES (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended		12 Months Ended
	Jan. 31, 2012	Jan. 31, 2012	Jan. 31, 2011	Jul. 31, 2011
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations		24.70%	27.00%
Unrecognized Tax Benefits	$ 196,243	$ 196,243		$ 188,380
Unrecognized Tax Benefits, Period Increase (Decrease)		7,863
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	136,397	136,397
Income Tax Examination, Penalties and Interest Accrued		30,503		29,652
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	0	0
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	61,496	61,496
Income taxes payable reclassified from noncurrent to current	57,126
Interest payable reclassified from noncurrent to current	$ 17,870