Employee Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Number of U.S. plans	2
Decrease in pension liabilities	$ 11,700,000
Net overfunded status	7,800,000
Accumulated benefit obligation for all defined benefit pension plans	427,800,000	423,600,000
Accumulated benefit obligations in excess of plan assets, projected benefit obligation	20,500,000	347,500,000
Accumulated benefit obligations in excess of plan assets, accumulated benefit obligation	19,700,000	335,100,000
Accumulated benefit obligations in excess of plan assets, fair value of plan assets	8,400,000	277,500,000
Percentage of U.S. pension plan to entity's total plan assets	70.00%	71.00%
Percentage of U.S. pension plan to entity's total projected benefit obligation	71.00%	74.00%
Percentage of U.S. pension plan to entity's total pension expense	75.00%	71.00%
Effect of one-percentage point increase in health care cost trend rate impact on increase liability	100,000	100,000
Deferred compensation arrangement with individual, maximum future deferred receipts allowed	75.00%
Deferred compensation arrangement with individual, recorded liability	9,500,000	9,500,000
Fiscal 2014 [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount not yet recognized and expected to be recognized in net periodic pension expense, actuarial loss	8,100,000
Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	60.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	25.00%
Fixed Income Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Component of equity/fixed income securities in international pension plan, in percentage	40.00%
Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	15.00%
Employees Hired On Or After August 1, 2013 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%
Employees Hired Prior To August 1, 2013 Will Be Eligible For Retirement Contribution, Effective August 1, 2016 [Member]
Defined Benefit Plan Disclosure [Line Items]
Annual Company retirement contribution in addition to 401 (k) match, percent	3.00%
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	21,500,000
Long-term rate of return on plan assets	7.50%
Estimated future contributions to pension plans	7,900,000
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	6,700,000
Estimated future contributions to pension plans	5,600,000
Long/Short Equity [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation	15.00%
International Equity [Member] | Significant Unobservable Inputs (Level 3) [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 securites, minimum	20.00%
Strategic asset allocation, equity securities, maximum	10.00%
International Equity [Member] | Fixed Income Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Component of equity/fixed income securities in international pension plan, in percentage	60.00%
U.S. Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability recorded for postretirement benefit plan	1,300,000	1,500,000
Health care cost rate assumed for Fiscal 2012	7.20%
Ultimate annual rate	4.50%
U.S. Employees [Member] | Contributory Employee Saving Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 7,300,000	$ 5,500,000	$ 9,100,000
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	3.00%
Contributory employee saving plan, percentage of participants, first eligible compensation	50.00%
Contributory employee saving plan, percentage of participants, second eligible compensation	2.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of fund held in other collective investment vehicles	100.00%