v2.4.0.6
Subsequent Events - Additional Information (Detail) (USD $)
 1 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended
Jul. 31, 2012
May 31, 2012
Dec. 31, 2011
Sep. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Feb. 21, 2012
Private Placement
Apr. 27, 2012
Entity Second Incorporation Date
Mar. 30, 2012
Employee Stock Plan, 2005 Plan
May 31, 2012
Employee
Apr. 30, 2012
Employee
Sep. 30, 2012
Office Space
Y
sqft
Feb. 21, 2012
Stockholder
Private Placement
Nov. 08, 2012
Subsequent Event
Office Space
Y
sqft
May 31, 2012
Former Employees
Apr. 30, 2012
Former Employees
Mar. 27, 2012
Former Employees
Feb. 24, 2012
Preferred Stock
Subsequent Event [Line Items]                                      
Common Stock Issued, shares 13,397,500             1,750,980           700,000          
Common Stock Issued, value       $ 17,848,000       $ 17,900,000                      
Common Stock Issued,per share value               $ 10.20                      
Repayment of Tax                                     5,300,000
Stock repurchased and canceled                               35,000 42,498 100,000  
Stock option granted, per share       $ 0.85             $ 12.45 $ 11.00       $ 11.50 $ 11.50 $ 10.00  
Stock Option granted     17,055,120 7,085,680 15,402,456 4,684,000 4,160,000     2,959,500 799,750 793,000              
Stock option grant, per share minimum                   $ 6.50                  
Stock option grant, per share maximum                   $ 10.35                  
RSUs Granted                   1,000,000                  
Restricted Stock Units Vesting Period       48 months           4 years                  
Restated entity incorporation date                 Apr. 27, 2012                    
Employee Stock Purchase Plan description                 Restated Bylaws, 2012 Equity Incentive Plan and the 2012 Employee Stock Purchase Plan, each to become effective in connection with the IPO.                    
Reincorporation Description   In May 2012, we reincorporated into Delaware as ServiceNow, Inc.                                  
Area of building under lease                         43,590   148,704        
Operating lease period                         10.5   11        
Approximated amount for minimum operating lease commitments       $ 10,200,000                 $ 10,500,000   $ 48,800,000