Employee Benefit Plans (Changes In Fair Value Of Assets Held By International Pension Plans' Level 3 Assets) (Details) (International Assets [Member], USD $)	12 Months Ended
Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Ending balance	$ 113,300,000	$ 108,200,000	$ 87,200,000
Equity/Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Ending balance	35,100,000	41,700,000	34,200,000
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Ending balance	21,800,000	26,300,000	21,700,000
Significant Unobservable Inputs (Level 3) [Member] \| Equity/Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	26,300,000	21,700,000	23,100,000
Unrealized gains	1,400,000	900,000	300,000
Foreign currency exchange	(3,800,000)	2,500,000	(1,900,000)
Purchases, sales, issuances and settlements, net	(2,000,000)	1,200,000	200,000
Ending balance	$ 21,800,000	$ 26,300,000	$ 21,700,000

The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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