Fair Value Measurements (Derivatives on the Balance Sheet) (Details) - Fair Value, Inputs, Level 2 - USD ($) $ in Millions	Jan. 31, 2021	Jul. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	$ 110.6	$ 82.0
Derivative assets	3.7	3.3
Derivative liabilities	(5.6)	(1.4)
Prepaid expenses and other current assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets	3.7	3.2
Other long-term assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets		0.1
Net investment hedge
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	50.0	55.8
Derivative assets	1.1	1.2
Derivative liabilities	(3.3)	0.0
Forward foreign currency exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	20.6	26.2
Derivative assets	1.5	2.1
Derivative liabilities	(2.3)	(1.4)
Interest rate swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Notional amounts	40.0	0.0
Derivative assets	1.1	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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Fair value, before effects of master netting arrangements, of a financial liability or 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 liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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