Employee Benefit Plans (Fair Value of Assets Held) (Details) - Pension Plan - USD ($) $ in Millions	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	$ 591.3	$ 550.6	$ 502.2
U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	517.8	480.3
Assets including NAV assets	591.3	550.6
Level 1 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	320.7	289.1
Level 2 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	159.4	155.8
Level 3
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	37.7	35.4	$ 30.8	$ 28.6
Level 3 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	37.7	35.4
Investments using NAV per share as practical expedient | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets		70.3
Cash and cash equivalents | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	3.2	10.1
Cash and cash equivalents | Level 1 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	2.2	6.8
Cash and cash equivalents | Level 2 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	1.0	3.3
Cash and cash equivalents | Level 3 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	0.0	0.0
Global equity securities | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	184.1	170.9
Global equity securities | Level 1 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	184.1	170.9
Global equity securities | Level 2 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	0.0	0.0
Global equity securities | Level 3 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	0.0	0.0
Fixed income securities | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	292.8	222.2
Fixed income securities | Level 1 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	134.4	111.4
Fixed income securities | Level 2 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	158.4	110.8
Fixed income securities | Level 3 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	0.0	0.0
Investment funds | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets		41.7
Investment funds | Level 1 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets		0.0
Investment funds | Level 2 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets		41.7
Investment funds | Level 3 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets		0.0
Insurance contracts | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	37.7	35.4
Insurance contracts | Level 1 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	0.0	0.0
Insurance contracts | Level 2 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	0.0	0.0
Insurance contracts | Level 3 | U.S. Plan
Defined Benefit Plan Disclosure
Defined benefit plan, fair value of plan assets	$ 37.7	$ 35.4