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Common Stock and Stockholders Equity (Deficit) (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified |
9 Months Ended | 9 Months Ended | 3 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Oct. 31, 2012
|
Jan. 31, 2012
|
Oct. 31, 2012
Common Class B [Member]
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Oct. 31, 2012
2012 Equity Incentive Plan [Member]
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Oct. 31, 2012
Employee Stock [Member]
|
Oct. 31, 2012
Stock Option [Member]
2012 Equity Incentive Plan [Member]
|
Oct. 31, 2012
Non Statutory Stock Option [Member]
|
Oct. 31, 2012
Non Statutory Stock Option [Member]
Executive Officers [Member]
|
Oct. 31, 2012
Restricted Stock [Member]
|
Oct. 31, 2012
Restricted Stock [Member]
Common Class B [Member]
|
Oct. 31, 2012
Restricted Stock [Member]
2012 Equity Incentive Plan [Member]
|
Oct. 31, 2012
Restricted Stock [Member]
2012 Equity Incentive Plan [Member]
Executive Officers [Member]
|
Oct. 31, 2012
Workday Foundation [Member]
|
Oct. 31, 2012
Workday Foundation [Member]
General and Administrative Expense [Member]
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| Common Stock and Stockholders Deficit (Textual) [Abstract] | ||||||||||||||
| Conversion of Preferred Stock into common stock | 98,000,000 | |||||||||||||
| Shares for future issuance under various terms provided for in the ESPP | 25,000,000 | 2,000,000 | ||||||||||||
| Shares not issued or subject to outstanding grants under EIP Plan | 39,200,000 | |||||||||||||
| Options issued under the Plan exercisable for periods | 5 years | 10 years | 10 years | 5 years | ||||||||||
| Non Statutory options outside of the Plan options exercisable for periods | 5 years | 4 years | 5 years | 5 years | ||||||||||
| Total grant-date fair value of stock options vested | $ 3.5 | |||||||||||||
| Issuance of shares of common stock to the Workday Foundation | 500,000 | |||||||||||||
| Share-based charge to general and administrative expenses | 11.3 | |||||||||||||
| Number of restricted shares | 1,300,000 | |||||||||||||
| Common Stock and Stockholders Deficit (Additional Textual) [Abstract] | ||||||||||||||
| Conversion of Common Stock Into Class B Common Stock | 42,100,000 | |||||||||||||
| Liabilities related to early exercises of stock options | 11.4 | |||||||||||||
| Exercisable but unvested options related to options | 7,600,000 | |||||||||||||
| Weighted-average exercise price of option | $ 2.65 | |||||||||||||
| Weighted-average remaining contractual life | 8 years 2 months 12 days | |||||||||||||
| Total intrinsic value of exercisable but unvested options | $ 350.7 | |||||||||||||