Employee Benefit Plans (Narrative) (Details) $ in Millions	12 Months Ended
	Jul. 31, 2016 USD ($) pension_plan	Jul. 31, 2015 USD ($)	Jul. 31, 2014 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number Of US Plans | pension_plan	2
Net underfunded status	$ 81.8	$ 20.2
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax	179.6	135.4
Defined Benefit Plan, Accumulated Benefit Obligation	519.0	484.2
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	375.5	242.3
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	377.4	241.9
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	$ 304.4	$ 216.0
Percentage of U.S. pension plan to entity's total plan assets	65.00%	67.00%
Percentage of U.S. pension plan to entity's total projected benefit obligation	69.00%	69.00%
Percentage of U.S. pension plan to entity's total pension expense	81.00%	81.00%
Defined Contribution Plan, Annual Retirement Contributions, Percent	3.00%
Deferred compensation arrangement with individual, maximum future deferred receipts allowed	75.00%
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	$ 433.1	$ 290.0
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	350.0	259.5
Deferred Compensation Arrangement with Individual, Recorded Liability	$ 8.6	9.1
Maximum
Defined Benefit Plan Disclosure [Line Items]
Percentage of fund held in other collective investment vehicles	100.00%
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax	$ 6.2	3.3	$ 0.3
International Equity | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Strategic asset allocation, fixed income securities, minimum	80.00%
Strategic asset allocation, fixed income securities, maximum	90.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	10.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	20.00%
United States Pension Plan of US Entity
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets	6.90%
Defined Benefit Plan, Contributions by Employer	$ 0.9
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	9.7
Change In Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	4.2	5.5
Foreign Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	3.3
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	3.4
Fiscal Two Thousand Sixteen
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Future Amortization of Gain (Loss)	7.3
Real Estate | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax	$ 2.4	(0.7)	0.0
Real Estate | Salaried Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	5.00%
Real Estate | Hourly Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	5.00%
Fixed Income Securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Component of equity/fixed income securities in international pension plan, in percentage	40.00%
Fixed Income Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax	$ 2.5	3.7	2.0
Fixed Income Securities | International Equity | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Component of equity/fixed income securities in international pension plan, in percentage	60.00%
Fixed Income Securities | Salaried Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	30.00%
Fixed Income Securities | Hourly Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	60.00%
Equity Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax	$ 1.3	0.3	(1.7)
Equity Securities | Salaried Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	65.00%
Equity Securities | Hourly Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	35.00%
Equity Securities | Long Short Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	15.00%
Contributory Employee Saving Plan | U S Employees
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 8.2	$ 8.6	$ 8.1
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%