Employee Benefit Plans (Fair Value Of Assets Held By U.S. Pension Plans) (Details) - Pension Plan - USD ($) $ in Millions	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	$ 465.1	$ 455.5	$ 478.5
U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	304.0	296.9
Defined benefit plan, alternative investments, fair value of plan assets	120.2	155.4
U.S. Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	97.6	141.5
U.S. Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	86.2	0.0
U.S. Plan | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	5.5	1.2
Defined benefit plan, alternative investments, fair value of plan assets	0.0	0.0
U.S. Plan | Cash and Cash Equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	1.8	1.2
U.S. Plan | Cash and Cash Equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	3.7	0.0
U.S. Plan | Cash and Cash Equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Global Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	141.2	162.4
Defined benefit plan, alternative investments, fair value of plan assets	80.3	100.2
U.S. Plan | Global Equity Securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	60.9	62.2
U.S. Plan | Global Equity Securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Global Equity Securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	152.0	119.5
Defined benefit plan, alternative investments, fair value of plan assets	34.6	47.3
U.S. Plan | Fixed Income Securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	34.9	72.2
U.S. Plan | Fixed Income Securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	82.5	0.0
U.S. Plan | Fixed Income Securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Real Estate
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	5.3	13.8
Defined benefit plan, alternative investments, fair value of plan assets	5.3	7.9
U.S. Plan | Real Estate | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	5.9
U.S. Plan | Real Estate | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Real Estate | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	$ 0.0	$ 0.0