NOTES PAYABLE AND LONG-TERM DEBT (Details Textuals) (USD $)	12 Months Ended					12 Months Ended	0 Months Ended				12 Months Ended		12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013 Senior Revolving Credit Facility Due Fiscal Year 2018 [Member] Line of Credit [Member]	Jul. 31, 2014 Senior Revolving Credit Facility Due Fiscal Year 2018 [Member] Line of Credit [Member]	Jul. 31, 2014 Senior Revolving Credit Facility Due Fiscal Year 2020 [Member] Line of Credit [Member]	Jun. 18, 2010 5.00% Senior Notes Due Fiscal Year 2020 [Member] Senior Notes [Member]	Jun. 18, 2010 5.00% Senior Notes Due Fiscal Year 2020 [Member] Senior Notes [Member]	Jul. 31, 2014 Minimum [Member] Senior Revolving Credit Facility Due Fiscal Year 2018 [Member] Line of Credit [Member]	Jul. 31, 2014 Maximum [Member] Senior Revolving Credit Facility Due Fiscal Year 2018 [Member] Line of Credit [Member]	Jul. 31, 2014 Commercial Paper [Member]	Jul. 31, 2013 Commercial Paper [Member]	Jul. 31, 2014 Commercial Paper [Member] Minimum [Member]	Jul. 31, 2014 Commercial Paper [Member] Maximum [Member]	Jul. 31, 2014 Commercial Paper [Member]	Jul. 31, 2014 Senior Revolving Credit Facility and Commercial Paper [Member]	Jul. 31, 2014 Letter of Credit [Member] Senior Revolving Credit Facility Due Fiscal Year 2018 [Member] Line of Credit [Member]	Jul. 31, 2014 Guarantees, Performance Bonds and Warranties [Member]
Debt Instrument [Line Items]
Line of credit facility capacity				$ 1,200,000,000		$ 1,500,000,000									$ 1,200,000,000	$ 1,200,000,000
Short term borrowings	424,943,000	169,967,000									425,000,000
Interest rate, minimum											0.27%
Interest rate, maximum											0.38%
Term of debt instrument				5 years		5 years							4 days	90 days
Deferred financing costs					3,043,000	1,535,000		3,455,000
Letters of credit outstanding amount																	6,146,000
Ratio of indebtedness to net capital									3.5	1
Face amount of publicy traded senior notes								375,000,000
Percentage of interest on senior notes issued								5.00%
Loss on extinguishment of debt							31,374,000
Interest Expense Increase Decrease To Related To Income Taxes Payable	(781,000)	(2,794,000)	1,653,000
Weighted average borrowing interest rate											0.30%	0.35%
Debt, Weighted Average Interest Rate	2.49%	3.38%
Unsecured Credit Facilities	234,035,000
Unsecured credit facilities, compensating balances	751,000
Amount oustanding																		$ 76,911,000