Segment Reporting (Geographic Sales By Origination And Property, Plant And Equipment) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 724.7	$ 700.0	$ 664.7	$ 644.8	$ 660.1	$ 608.2	$ 550.6	$ 553.0	$ 2,734.2	$ 2,371.9	$ 2,220.3
Property, Plant and Equipment, Net	509.3				484.6				509.3	484.6	469.8
United States
Segment Reporting Information [Line Items]
Net sales									1,120.8	990.4	937.7
Property, Plant and Equipment, Net	188.1				193.5				188.1	193.5	193.5
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Net sales									791.5	679.1	665.5
Property, Plant and Equipment, Net	181.1				170.0				181.1	170.0	154.6
Asia Pacific
Segment Reporting Information [Line Items]
Net sales									599.2	500.5	449.9
Property, Plant and Equipment, Net	53.4				55.3				53.4	55.3	60.1
Latin America
Segment Reporting Information [Line Items]
Net sales									222.7	201.9	167.2
Property, Plant and Equipment, Net	$ 86.7				$ 65.8				$ 86.7	$ 65.8	$ 61.6