Acquisition and Strategic Transaction Purchase Price Allocation Table (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Payment to acquire business, net of working capital adjustments			$ 180,785
Proceeds from Issuance of Debt	$ 0	$ 75,000	75,000
Business Combination, Contingent Consideration, Liability, Noncurrent	0	19,000	$ 19,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			3,200
Business Acquisition, Share Price			$ 140.75
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	0	413,139	$ 450,400
Discount on equity issued as consideration			37,261
Business Combination, Consideration Transferred, Equity Issued, Fair Value			(413,139)
Business Combination, Consideration Transferred			687,924
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			31,082
Business Combination, Acquired Receivable, Fair Value			362
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory			417,622
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets			13,911
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			288,134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			131,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent			25,080
Bargain purchase gain	$ 0	$ 63,237
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets			29,270
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable			12,381
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			47,936
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities			67,170
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 783,894
Hospira [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			3,200
Bargain purchase gain			$ 70,890
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			9 years
Customer Relationships [Member] | Hospira [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 48,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years
Pumps and dedicated sets [Domain] | Hospira [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 44,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			10 years
developed technology-consumables [Domain] | Hospira [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 34,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			12 years
In Process Research and Development [Member] | Hospira [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets			$ 5,000