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Fair Value Measurements (Narrative) (Details) - USD ($)	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Debt Instrument
Contingent consideration, non current		$ 0	$ 0
Level 2 \| Fair Value \| Fixed Interest Rate
Debt Instrument
Debt instrument, fair value disclosure	$ 396,900,000	297,400,000
Level 2 \| Fair Value \| Variable Interest Rate
Debt Instrument
Debt instrument, fair value disclosure	221,700,000	188,300,000
Level 2 \| Carrying Value \| Fixed Interest Rate
Debt Instrument
Debt instrument, fair value disclosure	425,000,000	275,000,000
Level 2 \| Carrying Value \| Variable Interest Rate
Debt Instrument
Debt instrument, fair value disclosure	221,700,000	188,300,000
Level 3 \| Carrying Value \| Fair Value, Nonrecurring
Debt Instrument
Equity method investments	$ 22,400,000	$ 24,200,000