Prepaids and Other Current Assets Related Party Text (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
CommonSharesSoldbyPfizer	2,500
Payments for Other Fees	$ 8.0
ICU Medical MSA Revenue	81.0	$ 70.2
Pfizer MSA Product Costs	$ 78.2	$ 72.4
Hospira [Member]
Related Party Transaction [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	3,200	3,200