Civil Qui Tam Actions

No definition available.

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- Details

Name:	celg_ManufacturingFacilityRepaymentObligationLineItems
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- Definition

Percentage of royalty received from sale of products.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Number of claims dismissed.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

+ Details

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

- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The estimated minimum amount of possible loss from the contingency.

+ References

+ Details

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

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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_ProductOrServiceAxis=celg_PomalystRoyaltyMember
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Commitments and Contingencies Commitments and Contingencies (Details 3) (USD $)	0 Months Ended	1 Months Ended	0 Months Ended
	Apr. 11, 2014 lawsuit	Feb. 28, 2014 lawsuit	Jun. 07, 2013	Dec. 31, 2014
Manufacturing Facility Repayment Obligation [Line Items]
Number of claims dismissed	2
Number of claims filed	4
Civil qui tam actions		3celg_CivilQuiTamActions
SWITZERLAND
Manufacturing Facility Repayment Obligation [Line Items]
Contractual obligation				$ 8,000,000
Revlimid Royalty
Manufacturing Facility Repayment Obligation [Line Items]
Royalty rate (as a percent)			0.01
Pomalyst Royalty
Manufacturing Facility Repayment Obligation [Line Items]
Royalty rate (as a percent)			0.025
Children's Medical Center Corporation
Manufacturing Facility Repayment Obligation [Line Items]
Range of possible loss minimum				0
Range of possible loss maximum				$ 85,500,000