Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands |
Apr. 30, 2021 |
Jul. 31, 2020 |
Apr. 30, 2020 |
|---|---|---|---|
| Property, Plant and Equipment [Line Items] | |||
| Land and land improvements | $ 761,367 | $ 750,714 | $ 745,275 |
| Buildings and building improvements | 1,502,828 | 1,475,661 | 1,466,113 |
| Machinery and equipment | 1,432,137 | 1,361,178 | 1,351,491 |
| Furniture and fixtures | 330,530 | 308,267 | 335,827 |
| Software | 122,586 | 104,223 | 130,354 |
| Vehicles | 82,375 | 80,510 | 81,408 |
| Construction in progress | 46,703 | 81,967 | 57,462 |
| Gross property, plant and equipment | 4,278,526 | 4,162,520 | 4,167,930 |
| Accumulated depreciation | (2,161,731) | (1,969,841) | (1,966,127) |
| Property, plant and equipment, net | $ 2,116,795 | $ 2,192,679 | $ 2,201,803 |