Employee Benefit Plans (Fair Value Of Assets Held By U.S. Pension Plans By Asset Category) (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
U.S. Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	317,200	274,200	265,300
U.S. Assets [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	18,500	900	300
U.S. Assets [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	152,100	138,200	138,900
U.S. Assets [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	124,500	103,700	88,100
U.S. Assets [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	22,100	31,400	38,000
U.S. 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	143,900	91,600	101,700
U.S. 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	18,500	900	300
U.S. 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	82,500	61,500	64,800
U.S. 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	42,900	29,200	36,600
U.S. Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	71,000	76,800	76,300
U.S. Assets [Member] | Significant Other Observable Inputs (Level 2) [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	50,200	57,300	56,200
U.S. 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	20,800	19,500	20,100
U.S. Assets [Member] | 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
U.S. Assets [Member] | 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
U.S. Assets [Member] | 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
U.S. Assets [Member] | 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