Employee Benefit Plans (Fair Value Of Assets Held By U.S. Pension Plans) (Details) - Pension Plan - USD ($) $ in Millions	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	$ 502.2	$ 486.3	$ 465.1
U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	344.5	330.9
Measured Using NAV Per Share as Practical Expedient	72.3	90.0
U.S. Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	175.1	159.6
U.S. Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	97.1	81.3
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	4.0	5.0
Measured Using NAV Per Share as Practical Expedient	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	3.6	4.7
U.S. Plan | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.4	0.3
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	112.1	113.4
Measured Using NAV Per Share as Practical Expedient	35.8	31.0
U.S. Plan | Global equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	76.3	82.4
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 | Private equity and other funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	191.9	153.5
Measured Using NAV Per Share as Practical Expedient	0.0	0.0
U.S. Plan | Private equity and other funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	95.2	72.5
U.S. Plan | Private equity and other funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	96.7	81.0
U.S. Plan | Private equity and other funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Private equity and other funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	33.1	53.7
Measured Using NAV Per Share as Practical Expedient	33.1	53.7
U.S. Plan | Private equity and other funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Private equity and other funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Private equity and other funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Real asset funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	3.4	5.3
Measured Using NAV Per Share as Practical Expedient	3.4	5.3
U.S. Plan | Real asset funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Real asset funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	0.0	0.0
U.S. Plan | Real asset funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, fair value of plan assets	$ 0.0	$ 0.0