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Goodwill and Other Intangible Assets Schedule of Goodwill (Tables) | 12 Months Ended
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Jul. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | Changes in the carrying amount of goodwill by reportable segment for the years ended July 31, 2018 and 2017, were as follows:
| IDS |  | WPS |  | Total
Balance as of July 31, 2016 | $ | 384,529 |  |  | $ | 45,342 |  |  | $ | 429,871 |
Translation adjustments | 4,845 |  |  | 2,981 |  |  | 7,826 |
Realignment of businesses between segments | 2,490 |  |  | (2,490 | ) |  | — |
Balance as of July 31, 2017 | $ | 391,864 |  |  | $ | 45,833 |  |  | $ | 437,697 |
Translation adjustments | (6,340 | ) |  | (1,487 | ) |  | (7,827 | )
Current year divestiture | — |  |  | (10,055 | ) |  | (10,055 | )
Balance as of July 31, 2018 | $ | 385,524 |  |  | $ | 34,291 |  |  | $ | 419,815 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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