Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Oct. 31, 2021	Jul. 31, 2021	Oct. 31, 2020
Property, Plant and Equipment [Line Items]
Land and land improvements	$ 757,625	$ 756,517	$ 752,259
Buildings and building improvements	1,492,863	1,496,402	1,475,857
Machinery and equipment	1,422,110	1,417,705	1,363,279
Furniture and fixtures	309,119	308,432	313,815
Software	123,228	122,778	99,077
Vehicles	80,921	80,328	80,552
Construction in progress	113,854	67,710	105,866
Gross property, plant and equipment	4,299,720	4,249,872	4,190,705
Accumulated depreciation	(2,237,398)	(2,181,996)	(2,024,101)
Property, plant and equipment, net	$ 2,062,322	$ 2,067,876	$ 2,166,604