Concentration risk percentage customer two.

No definition available.

Name:	rimm_ConcentrationRiskPercentageCustomerTwo
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fiscal Year.

+ References

No definition available.

+ Details

Name:	rimm_FiscalYear
Namespace Prefix:	rimm_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Independent Director's annual retainer Minimum Percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Independent directors annual retainer remaining percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Liability for uncertain tax positions percentage minimum.

+ References

No definition available.

+ Details

Name:	rimm_LiabilityForUncertainTaxPositionsPercentageMinimum
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Long Term Investment Maturity Period

+ References

No definition available.

+ Details

Name:	rimm_LongTermInvestmentMaturityPeriod
Namespace Prefix:	rimm_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of trading days preceding the redemption date of DSUs in order to arrive at the weighted average trading price of the Company's shares.

+ References

No definition available.

+ Details

Name:	rimm_NumberOfTradingDays
Namespace Prefix:	rimm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Accounts Receivable Major Customers

+ References

No definition available.

+ Details

Name:	rimm_PercentageOfAccountsReceivableMajorCustomers
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of entity wide revenue major customer.

+ References

No definition available.

+ Details

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Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage Of Options Vested In Year One

+ References

No definition available.

+ Details

Name:	rimm_PercentageOfOptionsVestedInYearOne
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Options Vested In Year Three

+ References

No definition available.

+ Details

Name:	rimm_PercentageOfOptionsVestedInYearThree
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Options Vested In Year Two

+ References

No definition available.

+ Details

Name:	rimm_PercentageOfOptionsVestedInYearTwo
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of amortization of intangible assets range.

+ References

No definition available.

+ Details

Name:	rimm_PeriodOfAmortizationOfIntangibleAssetsRange
Namespace Prefix:	rimm_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Property plant and equipment reducing balance method depreciation percentage.

+ References

No definition available.

+ Details

Name:	rimm_PropertyPlantAndEquipmentReducingBalanceMethodDepreciationPercentage
Namespace Prefix:	rimm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the period of time over which an employee's right to exercise an RSU award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, and is expressed in years.

+ References

No definition available.

+ Details

Name:	rimm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanStockOptionsAwardVestingPeriod
Namespace Prefix:	rimm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Short term Investments Maturity Period Maximum.

+ References

No definition available.

+ Details

Name:	rimm_ShortTermInvestmentsMaturityPeriodMaximum
Namespace Prefix:	rimm_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Unspecified software upgrade price per unit.

+ References

No definition available.

+ Details

Name:	rimm_UnspecifiedSoftwareUpgradePricePerUnit
Namespace Prefix:	rimm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the aggregate carrying amount of all cost-method investments held by the Company. Generally, such investments do not have readily determinable fair values and are not required to be accounted for by the equity method. The carrying amount of such securities equates to cost, adjusted for other-than-temporary impairment. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries, particularly foreign.

+ References

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 6

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 18

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 03-1

-Paragraph 22

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 4

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph b

-Clause 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

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Balance Type:	debit
Period Type:	instant

- Details

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Period Type:	duration

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Represents the value established as the selling price of the significant unit of accounting used to allocate the consideration of the multiple-deliverable arrangement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 25

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=19771336&loc=SL6750900-111635

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Balance Type:	credit
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Research in Motion Limited and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 02, 2013 Y D	Mar. 03, 2012	Feb. 26, 2011
Property, Plant and Equipment [Line Items]
Fiscal year period range	52 weeks	53 weeks	52 weeks
Allowance for doubtful accounts	$ 17,000,000	$ 16,000,000
Percentage of total revenue by customer	10.00%	10.00%
Percentage of total revenue by customer two			11.00%
Percentage of accounts receivable by one customer	8.20%	13.00%
Cost method investments	4,000,000	37,000,000
Equity method investments	46,000,000	48,000,000
Maturity period of short-term investments	One year or less
Maturity period of long-term investments	1
Derivative loss reclassified from accumulated other comprehensive income
Liability for uncertain income tax positions, percentage minimum	50.00%
RSUs vesting period	3 years
Independent director's annual retainer, minimum percentage	60.00%
Independent directors annual retainer remaining percentage	40.00%
Number of trading days	5
Vesting scenario one [Member]
Property, Plant and Equipment [Line Items]
Percentage of options vesting in year 1	25.00%
Percentage of options vesting in year 2	25.00%
Percentage of options vesting in year 3	50.00%
Vesting scenario two [Member]
Property, Plant and Equipment [Line Items]
Percentage of options vesting in year 2	50.00%
Percentage of options vesting in year 3	50.00%
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Percentage of amount declining in furniture and fixtures	20.00%
BlackBerry PlayBookTablet [Member]
Property, Plant and Equipment [Line Items]
Unspecified software upgrade	6
Minimum [Member]
Property, Plant and Equipment [Line Items]
Period of amortization of intangible assets range	2
Minimum [Member] \| Buildings, leasehold improvements and other [Member]
Property, Plant and Equipment [Line Items]
Useful life of property, plant and equipment, net	5 years
Minimum [Member] \| BlackBerry operations and other information technology [Member]
Property, Plant and Equipment [Line Items]
Useful life of property, plant and equipment, net	3 years
Minimum [Member] \| Manufacturing equipment, research and development equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Useful life of property, plant and equipment, net	2 years
Minimum [Member] \| BlackBerry 10 [Member]
Property, Plant and Equipment [Line Items]
BESP for unspecified software upgrade and non-software services	10
Maximum [Member]
Property, Plant and Equipment [Line Items]
Period of amortization of intangible assets range	10
Maximum [Member] \| Buildings, leasehold improvements and other [Member]
Property, Plant and Equipment [Line Items]
Useful life of property, plant and equipment, net	40 years
Maximum [Member] \| BlackBerry operations and other information technology [Member]
Property, Plant and Equipment [Line Items]
Useful life of property, plant and equipment, net	5 years
Maximum [Member] \| Manufacturing equipment, research and development equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Useful life of property, plant and equipment, net	8 years
Maximum [Member] \| BlackBerry 10 [Member]
Property, Plant and Equipment [Line Items]
BESP for unspecified software upgrade and non-software services	$ 20