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Restructuring and Integration Costs (Narrative) (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2016 | Jul. 31, 2016 | Oct. 31, 2016 | Jul. 31, 2017
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and Related Activities, Completion Date |  |  | Oct. 31, 2016 |
Sauflon [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Cumulative amounts incurred as of October 31, 2016 |  |  | $ 148,300,000 | $ 0
Additions during the period |  |  | 56,600,000 |
Integration costs | $ 10,000,000 |  |  |
Sauflon [Member] | Product Rationalization |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Cumulative amounts incurred as of October 31, 2016 |  |  | 129,400,000 |
Additions during the period |  |  | 56,400,000 |
Sauflon [Member] | Product Rationalization | Cost of sales [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Additions during the period | 8,700,000 | $ 23,500,000 |  |
Sauflon [Member] | Employee-related |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Cumulative amounts incurred as of October 31, 2016 |  |  | 17,800,000 |
Additions during the period |  |  | 0 |
Sauflon [Member] | Employee-related | Cost of sales [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Additions during the period | $ 400,000 | 900,000 |  |
Sauflon [Member] | Employee-related | Selling, general and administrative expense [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Additions during the period |  | 100,000 |  |
Sauflon [Member] | Employee-related | Research and development expense [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Additions during the period |  | 100,000 |  |
Sauflon [Member] | Facilities-related |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Cumulative amounts incurred as of October 31, 2016 |  |  | 1,100,000 |
Additions during the period |  |  | $ 200,000 |
Sauflon [Member] | Facilities-related | Selling, general and administrative expense [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Additions during the period |  | $ 200,000 |  |

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- Definition Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs. + References No definition available. + Details
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