Cover Page
May 21, 2020
Cover [Abstract]  
Document Type 8-K
Document Period End Date May 21, 2020
Entity Registrant Name Splunk Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-35498
Entity Tax Identification Number 86-1106510
Entity Address, Address Line One 270 Brannan Street
Entity Address, City or Town San Francisco
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94107
City Area Code 415
Local Phone Number 848-8400
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 $0.001 per share
Trading Symbol SPLK
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001353283
Amendment Flag false