| Document and Entity Information | Jul. 21, 2021 |
| Cover [Abstract] | |
| Security Exchange Name | NYSE |
| Amendment Flag | false |
| Entity Central Index Key | 0001108524 |
| Document Type | 8-K |
| Document Period End Date | Jul. 21, 2021 |
| Entity Registrant Name | salesforce.com, inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-32224 |
| Entity Tax Identification Number | 94-3320693 |
| Entity Address, Address Line One | Salesforce Tower |
| Entity Address, Address Line Two | 415 Mission Street |
| Entity Address, Address Line Three | 3rd Fl |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94105 |
| City Area Code | (415) |
| Local Phone Number | 901-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.001 per share |
| Trading Symbol | CRM |
| Entity Emerging Growth Company | false |
