Employee Benefit Plans (Summary Of Pension Plans' Assets Valued At NAV) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 247.0
Unfunded Commitments	16.7
International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	46.4
Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	100.4
Unfunded Commitments	7.3
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	124.5
Fixed Income Securities [Member] | International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	13.8
Equity/Fixed Income [Member] | International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	32.6
Redemption Notice Period	90 days
Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	22.1
Unfunded Commitments	$ 9.4
Minimum [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	10 days
Minimum [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	65 days
Minimum [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	30 days
Maximum [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	100 days
Maximum [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	120 days
Maximum [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	95 days