Employee Benefit Plans (Narrative) (Details) $ in Thousands	12 Months Ended
	Jul. 31, 2015 USD ($) item	Jul. 31, 2014 USD ($)	Jul. 31, 2013 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of U.S. plans | item	2
Net underfunded status	$ 20,194	$ 8,783
AOCI consisting primarily of unrecognized actuarial losses	135,400	143,400
Accumulated benefit obligation for all defined benefit pension plans	484,200	476,100
Accumulated benefit obligations in excess of plan assets, projected benefit obligation	242,300	234,800
Accumulated benefit obligations in excess of plan assets, accumulated benefit obligation	241,900	233,800
Accumulated benefit obligations in excess of plan assets, fair value of plan assets	$ 216,000	$ 215,900
Percentage of U.S. pension plan to entity's total plan assets	67.00%	69.00%
Percentage of U.S. pension plan to entity's total projected benefit obligation	69.00%
Percentage of U.S. pension plan to entity's total pension expense	81.00%	80.00%
Effect of one-percentage point increase in health care cost trend rate impact on increase liability	$ 100	$ 100
Deferred compensation arrangement with individual, maximum future deferred receipts allowed	75.00%
Deferred compensation arrangement with individual, recorded liability	$ 9,100	9,100
Projected benefit obligation	290,000	289,300
Fair value of plan assets for plans with projected benefit obligations	$ 259,500	262,700
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of fund held in other collective investment vehicles	100.00%
International Equity [Member] | Fair Value Inputs Level3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation, fixed income securities, minimum	80.00%
Strategic asset allocation, fixed income securities, maximum	90.00%
Strategic asset allocation, equity securities, minimum	20.00%
Strategic asset allocation, equity securities, maximum	10.00%
United States Pension Plans Of U S Entity Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets	6.99%
Company contributions	$ 1,600
Estimated future contributions to pension plans	10,800
Change In Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	5,511	4,263
U S Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations in excess of plan assets, projected benefit obligation	2,900	2,893
Accumulated benefit obligations in excess of plan assets, accumulated benefit obligation	2,595	2,627
Liability recorded for postretirement benefit plan	$ 1,000	1,300
Health care cost rate assumed for Fiscal 2015	7.80%
Ultimate annual rate	4.50%
Foreign Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 3,900
Estimated future contributions to pension plans	4,000
Fiscal Two Thousand Sixteen [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount not yet recognized and expected to be recognized in net periodic pension expense, actuarial loss	$ 8,600
Employees Hired On Or After August First Two Thousand Thirteen Will Be Eligible For Retirement Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Annual Company retirement contribution in addition to 401 (k) match, percent	3.00%
Real Estate [Member] | Salaried Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	5.00%
Real Estate [Member] | Hourly Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	5.00%
Fixed Income Securities [Member] | Fair Value Inputs Level1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Component of equity/fixed income securities in international pension plan, in percentage	40.00%
Fixed Income Securities [Member] | International Equity [Member] | Fair Value Inputs Level1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Component of equity/fixed income securities in international pension plan, in percentage	60.00%
Fixed Income Securities [Member] | Salaried Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	30.00%
Fixed Income Securities [Member] | Hourly Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	60.00%
Equity Securities [Member] | Salaried Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	65.00%
Equity Securities [Member] | Hourly Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	35.00%
Equity Securities [Member] | Long Short Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	15.00%
Employees Hired Prior To August First Two Thousand Thirteen Will Be Eligible For Retirement Contribution Effective August First Two Thousand Sixteen [Member]
Defined Benefit Plan Disclosure [Line Items]
Annual Company retirement contribution in addition to 401 (k) match, percent	3.00%
Contributory Employee Saving Plan [Member] | U S Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 8,600	$ 8,100	$ 7,300
Contributory employee saving plan, employee contribution threshold limit from compensation, maximum	25.00%
Contributory employee saving plan, percentage match of participants, first contributions	100.00%
Contributory employee saving plan, percentage match of participants, second contributions	50.00%
Contributory employee saving plan, percentage of participants, first eligible compensation	3.00%
Contributory employee saving plan, percentage of participants, second eligible compensation	2.00%