XML 9 R1.htm IDEA: XBRL DOCUMENT v3.19.2
Document and Entity Information
Jul. 31, 2019
Cover page.  
Amendment Flag false
Document Type 8-K
Document Period End Date Jul. 31, 2019
Entity Registrant Name DEXCOM INC
Entity Incorporation, State or Country Code DE
Entity File Number 000-51222
Entity Tax Identification Number 33-0857544
Entity Address, Address Line One 6340 Sequence Drive
Entity Address, City or Town San Diego,
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92121
City Area Code 858
Local Phone Number 200-0200
Entity Emerging Growth Company false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.001 Par Value Per Share
Trading Symbol DXCM
Security Exchange Name NASDAQ
Entity Central Index Key 0001093557