Employee Benefit Plans (Summary Of Pension Plans' Assets Valued At NAV) (Details) $ in Millions	12 Months Ended
	Jul. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 255.9
Unfunded Commitments	5.7
International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	64.1
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 55.6
Fixed Income Securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	60 days
Fixed Income Securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	120 days
Fixed Income Securities [Member] | International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 35.9
Redemption Notice Period	7 days
Equity Fixed Income [Member] | International Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 28.2
Redemption Notice Period	90 days
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 19.0
Unfunded Commitments	$ 2.3
Redemption Notice Period	95 days
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value	$ 181.3
Unfunded Commitments	$ 3.4
Equity Securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	10 days
Equity Securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Redemption Notice Period	100 days