Fair Value Measurements (Derivatives on the Balance Sheet) (Details) € in Millions, $ in Millions	Apr. 30, 2022 EUR (€)	Apr. 30, 2022 USD ($)	Jul. 31, 2021 USD ($)
Forward foreign currency exchange contracts \| Net investment hedges
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts	€ 80	$ 88.8
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts		294.5	$ 327.2
Assets		7.2	2.6
Liabilities		3.8	3.6
Designated as hedging instruments \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts		122.6	173.0
Assets		6.0	2.1
Liabilities		1.3	3.2
Designated as hedging instruments \| Fair Value, Inputs, Level 2 \| Net investment hedges
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts		88.8	55.8
Assets		4.8	1.1
Liabilities		0.0	2.0
Designated as hedging instruments \| Fair Value, Inputs, Level 2 \| Forward foreign currency exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts		33.8	117.2
Assets		1.2	1.0
Liabilities		1.3	1.2
Not designated as hedging instruments \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts		171.9	154.2
Assets		1.2	0.5
Liabilities		2.5	0.4
Not designated as hedging instruments \| Fair Value, Inputs, Level 2 \| Forward foreign currency exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional Amounts		171.9	154.2
Assets		1.2	0.5
Liabilities		$ 2.5	$ 0.4

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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