Employee Benefit Plans (Fair Value Of Assets Held By International Pension Plans) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	$ 102,300	$ 105,800	$ 87,300	$ 66,600
Significant Unobservable Inputs (Level 3) [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	19,400	19,400	17,900	17,300
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	60,800	55,000	31,400	33,100
Significant Unobservable Inputs (Level 3) [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	22,100	31,400	38,000	16,200
International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	135,500	113,300	108,200
International Assets [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	600
International Assets [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	63,800	37,100	33,500
International Assets [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	27,900	34,300	26,500
International Assets [Member] | Equity/Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	43,200	35,100	41,700
International Assets [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		6,800	6,500
International Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	88,200	56,300	48,900
International Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	600
International Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	63,800	37,100	33,500
International Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	6,900	5,900
International Assets [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Equity/Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	16,900	13,300	15,400
International Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	21,000	35,200	33,000
International Assets [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	21,000	28,400	26,500
International Assets [Member] | Significant Other Observable Inputs (Level 2) [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets		6,800	6,500
International Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	26,300	21,800	26,300
International Assets [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity/Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	$ 26,300	$ 21,800	$ 26,300	$ 21,700