DEI Document - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Entity Information [Line Items]
Entity Registrant Name	ICU MEDICAL INC/DE
Entity Central Index Key	0000883984
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Trading Symbol	icui
Entity Small Business	false
Entity Emerging Growth Company	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		20,489,181
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3