XML 12 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document and Entity Information - shares
shares in Millions
 3 Months Ended
Apr. 30, 2019
May 28, 2019
Entity Information [Line Items]    
Entity Registrant Name Workday, Inc.  
Entity Central Index Key 0001327811  
Current Fiscal Year End Date --01-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Apr. 30, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Trading Symbol WDAY  
Entity Small Business false  
Entity Emerging Growth Company false  
Class A    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   162
Class B    
Entity Information [Line Items]    
Entity Common Stock, Shares Outstanding   64