Summary of Business and Significant Accounting Policies (Schedule of Reconciliation of the Denominator Used in the Calculation of Basic and Diluted Net Income Per Share Attributable to salesforce.com) (Details) (USD $) In Thousands	3 Months Ended
Apr. 30, 2011	Apr. 30, 2010
Summary of Business and Significant Accounting Policies
Net income attributable to salesforce.com	$ 530	$ 17,745
Weighted-average shares outstanding for basic earnings per share	133,454	128,032
Convertible senior notes	2,409	0
Employee stock awards	4,521	4,219
Warrants	678	0
Adjusted weighted-average shares outstanding and assumed conversion for diluted earnings per share	141,062	132,251

Summary of Business and Significant Accounting Policies (Schedule of Reconciliation of the Denominator Used in the Calculation of Basic and Diluted Net Income Per Share Attributable to salesforce.com) (Details) (USD $)
In Thousands

3 Months Ended

Apr. 30, 2011

Apr. 30, 2010

Summary of Business and Significant Accounting Policies

Net income attributable to salesforce.com

$ 530

$ 17,745

Weighted-average shares outstanding for basic earnings per share

133,454

128,032

Convertible senior notes

2,409

Employee stock awards

4,521

4,219

Warrants

678

Adjusted weighted-average shares outstanding and assumed conversion for diluted earnings per share

141,062

132,251

- Definition

Aggregate awards of share options and nonvested shares to be issued to an employee under a share-based compensation arrangement are considered options for purposes of computing diluted earnings per share. Such share-based awards shall be considered to be outstanding as of the grant date for purposes of computing diluted earnings per share even though their exercise may be contingent upon vesting. Those share-based awards are included in the diluted Earnings Per Share (EPS) computation even if the employee may not receive (or be able to sell) the stock until some future date. Accordingly, all shares to be issued shall be included in computing diluted EPS if the effect is dilutive. The dilutive effect of share-based compensation arrangements shall be computed using the treasury stock method. If the equity share options or other equity instruments are outstanding for only part of a period, the shares issuable shall be weighted to reflect the portion of the period during which the equity instruments were outstanding.

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- Definition

The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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