Deferred and amortized commission period.

No definition available.

Name:	crm_DeferredAndAmortizedCommissionPeriod
Namespace Prefix:	crm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of customer accounts receivable required to be considered a significant customer

+ References

No definition available.

+ Details

Name:	crm_PercentageOfCustomerAccountsReceivableRequiredToBeConsideredSignificantCustomer
Namespace Prefix:	crm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of customer total revenue required to be considered a significant customer

+ References

No definition available.

+ Details

Name:	crm_PercentageOfCustomerTotalRevenueRequiredToBeConsideredSignificantCustomer
Namespace Prefix:	crm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Significant Concentration of Accounts Receivable Number Customers

+ References

No definition available.

+ Details

Name:	crm_SignificantConcentrationOfAccountsReceivableNumberCustomers
Namespace Prefix:	crm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Significant Concentration of Total Revenue Number Customers

+ References

No definition available.

+ Details

Name:	crm_SignificantConcentrationOfTotalRevenueNumberCustomers
Namespace Prefix:	crm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Summary of Business and Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		9 Months Ended			9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2014 customer	Oct. 31, 2013 customer	Oct. 31, 2014 Segment customer	Oct. 31, 2013 customer	Jan. 31, 2014 customer	Oct. 31, 2014 Assets Outside Americas	Jan. 31, 2014 Assets Outside Americas	Oct. 31, 2014 Revenue Americas	Oct. 31, 2013 Revenue Americas	Oct. 31, 2014 Revenue Americas	Oct. 31, 2013 Revenue Americas	Oct. 31, 2014 Minimum	Oct. 31, 2014 Maximum
Concentration Risk [Line Items]
Number of operating segments			1
Customers exceeding concentration of accounts receivable threshold, number	0		0		0
Percentage of customer accounts receivable required to be considered a significant customer	5.00%		5.00%		5.00%
Customers exceeding concentration of total revenue threshold, number	0	0	0	0
Percentage of customer total revenue required to be considered a significant customer	5.00%	5.00%	5.00%	5.00%
Concentration risk percentage						12.00%	12.00%	94.00%	96.00%	94.00%	96.00%
Deferred and amortized commission period												12 months	36 months
Stock-based expense recognized over vesting term			4 years