v2.4.0.6

Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Commitments and Contingencies (Textual) [Abstract]
Rent expense	$ 1.7	$ 0.8	$ 4.4	$ 2.4

X

- Definition

Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	wday_CommitmentsAndContingenciesTextualAbstract
Namespace Prefix:	wday_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration