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Acquisitions Acquisition - European IAMS and Eukanuba (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 16, 2015 | Dec. 31, 2014 | Dec. 31, 2014 | Mar. 31, 2015 | Jun. 30, 2015 | May. 21, 2015 | Sep. 30, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  |  |  | 35.00% |  |
Goodwill |  |  |  |  | $ 2,498.7 |  | $ 1,524.8
Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | $ 0.5 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | $ 9.9 |  |  |  |  |  |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |  |  |  |  | The preliminary fair values recorded for the assets acquired and liabilities assumed for Salix were as follows:
|  | Preliminary Valuation
|  | January 16, 2014
Cash |  | $ | 0.5 |
Accounts receivable |  | 9.9 |
Inventories |  | 17.0 |
Prepaid expense |  | 2.4 |
Property, plant and equipment, net |  | 1.2 |
Intangible assets |  | 58.5 |
Total assets acquired |  | 89.5 |
Total liabilities assumed |  | 11.3 |
Total identifiable net assets less goodwill |  | 78.2 |
Goodwill |  | 70.1 |
Total identifiable net assets |  | $ | 148.3 |
Technology Assets Acquired, Useful Life | 17 years |  |  |  |  |  |
Acquired Technology Assets | $ 2.1 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory | 17.0 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 2.4 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 1.2 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | 58.5 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets | 89.5 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | 11.3 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Assets Less Goodwill | 78.2 |  |  |  |  |  |
Goodwill | 70.1 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net | 148.3 |  |  |  |  |  |
European IAMS and Eukanuba [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |  |  |  |  | The preliminary fair values recorded for the assets acquired and liabilities assumed for European IAMS and Eukanuba were as follows:
|  | Preliminary Valuation
|  | December 31, 2014
Inventories |  | $ | 15.1 |
Prepaid expense |  | 1.3 |
Other current assets |  | 2.6 |
Property, plant and equipment, net |  | 58.3 |
Intangible assets |  | 40.5 |
Total assets acquired |  | 117.8 |
Total liabilities assumed |  | 5.6 |
Total identifiable net assets less goodwill |  | 112.2 |
Goodwill |  | 3.5 |
Total identifiable net assets |  | $ | 115.7 |
Technology Assets Acquired, Useful Life |  | 8 years |  |  |  |  |
Acquired Technology Assets |  | $ 3.6 | $ 3.6 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory |  | 15.1 | 15.1 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets |  | 1.3 | 1.3 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets, Current |  | 2.6 | 2.6 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  | 58.3 | 58.3 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  | 40.5 | 40.5 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  | 117.8 | 117.8 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  | 5.6 | 5.6 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Assets Less Goodwill |  | 112.2 | 112.2 |  |  |  |
Goodwill |  | 3.5 | 3.5 |  |  |  |
Trade Names [Member] | Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 20.0 |  |  |  |  |  |
Acquired Finite-lived Intangible Asset, Residual Value | $ 1.0 |  |  |  |  |  |
Trade Names [Member] | European IAMS and Eukanuba [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | 26.7 | $ 26.7 |  |  |  |
Minimum [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  | 2 years |  |
Maximum [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  | 20 years |  |
Customer Relationships [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Retention Rate |  |  |  |  |  | 95.00% |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  |  |  | 38.00% |  |
Business Acquisition Contingent Consideration Key Assumptions Discount Rate |  |  |  |  | 9.50% |  |
Customer Relationships [Member] | Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 13 years |  |  |  |  |  |
Retention Rate | 92.50% |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 38.00% |  |  |  |  |  |
Acquired Finite-lived Intangible Asset, Residual Value | $ 34.0 |  |  |  |  |  |
Customer Relationships [Member] | European IAMS and Eukanuba [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 25.00% |  |  |  |
Acquired Finite-lived Intangible Asset, Residual Value |  | $ 10.2 | $ 10.2 |  |  |  |
Customer Relationships [Member] | Minimum [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  | 2 years |  |
Customer Relationships [Member] | Minimum [Member] | Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Fair Value Inputs, Long-term Revenue Growth Rate | 0.00% |  |  |  |  |  |
Business Acquisition Contingent Consideration Key Assumptions Discount Rate | 12.00% |  |  |  |  |  |
Customer Relationships [Member] | Minimum [Member] | European IAMS and Eukanuba [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 2 years |  |  |  |
Fair Value Inputs, Long-term Revenue Growth Rate |  | 0.50% |  |  |  |  |
Retention Rate |  | 90.00% | 90.00% |  |  |  |
Business Acquisition Contingent Consideration Key Assumptions Discount Rate |  |  |  | 15.00% |  |  |
Customer Relationships [Member] | Maximum [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  | 20 years |  |
Customer Relationships [Member] | Maximum [Member] | Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Fair Value Inputs, Long-term Revenue Growth Rate | 12.10% |  |  |  |  |  |
Business Acquisition Contingent Consideration Key Assumptions Discount Rate | 13.00% |  |  |  |  |  |
Customer Relationships [Member] | Maximum [Member] | European IAMS and Eukanuba [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 15 years |  |  |  |
Fair Value Inputs, Long-term Revenue Growth Rate |  | 13.20% |  |  |  |  |
Retention Rate |  | 100.00% | 100.00% |  |  |  |
Business Acquisition Contingent Consideration Key Assumptions Discount Rate |  |  |  | 16.00% |  |  |
Cost Approach Valuation Technique [Member] | Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment, Measurement Basis, Percentage of Total | 98.00% |  |  |  |  |  |
Market Approach Valuation Technique [Member] | Salix Animal Health LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment, Measurement Basis, Percentage of Total | 2.00% |  |  |  |  |  |

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