Goodwill and Intangible Assets (Reconciliation of Goodwill) (Details) - USD ($)	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment	$ 0	$ 0	$ 0
Goodwill
Beginning Balance	322,500,000	316,800,000
Goodwill acquired	42,800,000	0
Foreign currency translation	(19,500,000)	5,700,000
Ending Balance	345,800,000	322,500,000	316,800,000
Engine Products Segment
Goodwill
Beginning Balance	84,700,000	84,800,000
Goodwill acquired	0	0
Foreign currency translation	(1,000,000.0)	(100,000)
Ending Balance	83,700,000	84,700,000	84,800,000
Industrial Products Segment
Goodwill
Beginning Balance	237,800,000	232,000,000.0
Goodwill acquired	42,800,000	0
Foreign currency translation	(18,500,000)	5,800,000
Ending Balance	$ 262,100,000	$ 237,800,000	$ 232,000,000.0