Contributory Employee Saving Plan Employee Contribution Threshold Limit From Compensation Maximum.

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Contributory Employee Saving Plan Percentage Match Of Participants First Contributions.

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Contributory Employee Saving Plan Percentage Match Of Participants Second Contributions.

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Contributory Employee Saving Plan Percentage Of Participants First Eligible Compensation.

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Contributory Employee Saving Plan Percentage Of Participants Second Eligible Compensation.

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Deferred Compensation Arrangement With Individual Maximum Future Deferred Receipts Allowed.

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Defined Benefit Plan, Increase Or Decrease In Long-Term Rate Of Return On Plan Assets

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Defined Benefit Plan Target Allocation Percentage Of Assets Fixed Income Securities Range Maximum.

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Defined Benefit Plan Target Allocation Percentage Of Assets Fixed Income Securities Range Minimum.

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Defined contribution plan, annual retirement contributions, percent.

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Number Of U.S. Plans.

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Percentage of fund held in other collective investment vehicles.

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- Definition

The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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- Definition

Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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- Definition

Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with projected benefit obligation in excess of plan assets.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Employee Benefit Plans (Narrative) (Details) $ in Millions		12 Months Ended
Employee Benefit Plans (Narrative) (Details) $ in Millions	Aug. 01, 2016	Jul. 31, 2019 USD ($)	Jul. 31, 2018 USD ($) pension_plan	Jul. 31, 2017 USD ($)	Jul. 31, 2016 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of U.S. pension plan types \| pension_plan			2
Defined contribution plan, annual retirement contributions, percent	3.00%
Deferred compensation arrangement with individual, maximum future deferred receipts allowed			75.00%
Deferred compensation arrangement with individual, recorded liability			$ 5.7	$ 6.5
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net underfunded status			1.9	50.0
Unrealized losses recognized			130.8	147.7
Loss anticipated to be recognized in net periodic pension expense			4.5
Accumulated benefit obligation			469.3	495.3
Projected benefit obligation for pension plans with projected benefit obligations in excess of plan assets			68.4	416.8
Fair value of plan assets for pension plans with projected benefit obligations in excess of plan assets			50.3	361.1
Projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets			18.7	360.4
Accumulated benefit obligation for plans with projected benefit obligations in excess of plan assets			16.9	360.1
Fair value of plan assets for plans with projected benefit obligations in excess of plan assets			6.2	311.0
Company contributions			$ 37.6	3.1
Pension Plan \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Percentage of fund held in other collective investment vehicles			100.00%
Pension Plan \| Private equity and other funds \| 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%
Pension Plan \| Equity Securities \| Level 3 \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			20.00%
Pension Plan \| Equity Securities \| Level 3 \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			10.00%
Pension Plan \| Salaried Pension Plan \| Real asset funds
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			2.00%
Pension Plan \| Salaried Pension Plan \| Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			1.00%
Pension Plan \| Salaried Pension Plan \| Private equity and other funds
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			60.00%
Pension Plan \| Salaried Pension Plan \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			37.00%
Pension Plan \| Hourly Pension Plan \| Real asset funds
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			2.00%
Pension Plan \| Hourly Pension Plan \| Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			1.00%
Pension Plan \| Hourly Pension Plan \| Private equity and other funds
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			57.00%
Pension Plan \| Hourly Pension Plan \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Pension plan target allocation percentage			40.00%
Pension Plan \| Non - U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets			4.08%
Company contributions			$ 1.0
Expected future employer contributions			1.3
Pension Plan \| Non - U.S. Plan \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Unrealized losses recognized			$ 4.0	(1.2)	$ (2.7)
Pension Plan \| U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets			6.25%
Company contributions			$ 1.6
Expected future employer contributions			3.1
Employer discretionary contribution			$ 35.0
Retirement Savings and Employee Stock Ownership Plan \| U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, annual retirement contributions, percent			3.00%
Company contributions			$ 22.1	$ 20.1	$ 8.2
Contributory employee saving plan, employee contribution threshold limit from compensation, maximum			50.00%
Contributory employee saving plan, percentage match of participants, first contributions			100.00%
Contributory employee saving plan, percentage of participants, first eligible compensation			3.00%
Contributory employee saving plan, percentage match of participants, second contributions			50.00%
Contributory employee saving plan, percentage of participants, second eligible compensation			2.00%
Scenario, Forecast \| Pension Plan \| U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Company contributions		$ 1.4