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Related Party Transaction, Number Of Renewal Terms

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Related Party Transaction, Renewal Term

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Related Party Transaction, Term Of Contract

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Separation Related Costs, Financing Activities, Payments Made To Date

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Stockholders' Equity, Transfers (To) From Parent

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Amount for accounts payable to related parties.

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For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Party Agreements and Transactions - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) renewal_term	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Related Party Transaction [Line Items]
Payable to Lilly	$ 268.7	$ 0.0
Net transfers (to)/from Lilly	(226.3)	873.3	$ (129.2)
Acquisition amount	0.0	882.1	45.0
Boehringer Ingelheim Vetmedica, Inc.
Related Party Transaction [Line Items]
Acquisition amount		882.1
Lilly
Related Party Transaction [Line Items]
Payable to Lilly	66.0
Stock-based compensation	26.0	25.0	20.4
Costs/(benefits) of defined benefit pension plan	(6.3)	73.7	11.3
Lilly \| MSA
Related Party Transaction [Line Items]
Total net assets	95.6
Restricted cash retained	$ 202.7
Lilly \| TSA
Related Party Transaction [Line Items]
Mark-up rate	7.00%
Revenue from related parties	$ 28.0
Lilly \| Intellectual Property and Technology License Agreement
Related Party Transaction [Line Items]
Initial term	2 years
Number of renewal terms \| renewal_term	3
Extension term	1 year
Lilly \| Toll Manufacturing Arrangement
Related Party Transaction [Line Items]
Revenue from related parties	$ 7.0
Lilly \| Manufacturing Support
Related Party Transaction [Line Items]
Revenue from related parties	3.7	6.2	5.5
Director \| Commercial Operations
Related Party Transaction [Line Items]
Revenue from related parties	23.5	24.8	14.3
Accounts receivable	2.5	2.0
Purchases of goods and services	3.9	5.9	$ 7.1
Accounts payable	0.7	$ 0.4
IPO
Related Party Transaction [Line Items]
Amount transferred to parent	$ 4,200.0