v3.19.2
Cover
Aug. 06, 2019
Cover page.  
Document Type 8-K
Document Period End Date Aug. 06, 2019
Entity Registrant Name REGENERON PHARMACEUTICALS, INC.
Entity Central Index Key 0000872589
Amendment Flag false
Entity Incorporation, State or Country Code NY
Entity File Number 000-19034
Entity Tax Identification Number 13-3444607
Entity Address, Address Line One 777 Old Saw Mill River Road
Entity Address, City or Town Tarrytown,
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10591-6707
City Area Code 914
Local Phone Number 847-7000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock - par value $.001 per share
Trading Symbol REGN
Security Exchange Name NASDAQ
Entity Emerging Growth Company false