Goodwill and Other Intangible Assets (Reconciliation Of Goodwill) (Details) $ in Millions	6 Months Ended
	Jan. 31, 2016 USD ($)
Goodwill [Roll Forward]
Balance as of July 31, 2015	$ 223.7
Goodwill acquired	6.0
Foreign exchange translation	(1.2)
Balance as of January 31, 2016	228.5
Industrial Product segment
Goodwill [Roll Forward]
Balance as of January 31, 2016	60.2
Operating Segments | Engine Products
Goodwill [Roll Forward]
Balance as of July 31, 2015	71.0
Goodwill acquired	6.3
Foreign exchange translation	0.0
Balance as of January 31, 2016	77.3
Operating Segments | Industrial Product segment
Goodwill [Roll Forward]
Balance as of July 31, 2015	152.7
Goodwill acquired	(0.3)
Foreign exchange translation	(1.2)
Balance as of January 31, 2016	$ 151.2