Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jan. 31, 2022	Jul. 31, 2021
Forward foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument term (months)	12 months
Fair Value, Inputs, Level 2 | Fair Value | Fixed Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt instrument, fair value disclosure	$ 433.4	$ 297.4
Fair Value, Inputs, Level 2 | Fair Value | Variable Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt instrument, fair value disclosure	131.6	188.3
Fair Value, Inputs, Level 2 | Carrying Value | Fixed Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt instrument, fair value disclosure	425.0	275.0
Fair Value, Inputs, Level 2 | Carrying Value | Variable Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt instrument, fair value disclosure	131.6	188.3
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Equity method investments	$ 23.7	$ 24.2