Fair Value Measurements (Derivatives on the Balance Sheet) (Details) - USD ($) $ in Millions	Oct. 31, 2020	Jul. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	$ 125.1	$ 82.0
Net investment hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	55.8	55.8
Forward foreign currency exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	29.3	26.2
Interest rate swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	40.0	0.0
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	5.0	3.3
Derivative liabilities	(1.2)	(1.4)
Fair Value, Inputs, Level 2 \| Prepaid expenses and other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	4.8	3.2
Fair Value, Inputs, Level 2 \| Other long-term assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	0.2	0.1
Fair Value, Inputs, Level 2 \| Net investment hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	1.1	1.2
Derivative liabilities	(0.3)	0.0
Fair Value, Inputs, Level 2 \| Forward foreign currency exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	3.7	2.1
Derivative liabilities	(0.9)	(1.4)
Fair Value, Inputs, Level 2 \| Interest rate swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	0.2	0.0
Derivative liabilities	$ 0.0	$ 0.0

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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