Segment Reporting (Geographic Sales by Origination and Property, Plant and Equipment) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Segment Reporting Information
Net Sales	$ 617.4	$ 629.7	$ 662.0	$ 672.7	$ 726.9	$ 712.8	$ 703.7	$ 701.4	$ 2,581.8	$ 2,844.9	$ 2,734.2
Property, Plant and Equipment, Net	631.6				588.9				631.6	588.9	509.3
United States
Segment Reporting Information
Net Sales									1,059.9	1,192.6	1,120.8
Property, Plant and Equipment, Net	229.0				231.0				229.0	231.0	188.1
Europe, Middle East and Africa
Segment Reporting Information
Net Sales									760.2	826.8	791.5
Property, Plant and Equipment, Net	229.4				199.1				229.4	199.1	181.1
Asia Pacific
Segment Reporting Information
Net Sales									553.2	597.9	599.2
Property, Plant and Equipment, Net	59.8				50.2				59.8	50.2	53.4
Latin America
Segment Reporting Information
Net Sales									208.5	227.6	222.7
Property, Plant and Equipment, Net	$ 113.4				$ 108.6				$ 113.4	$ 108.6	$ 86.7