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Subsequent Events (Details) - Subsequent Event - USD ($) $ in Millions	Oct. 28, 2024	Nov. 07, 2024
Subsequent Event [Line Items]
Share Repurchase Program, Authorized, Amount		$ 200.0
Preferred Stock
Subsequent Event [Line Items]
Number of preferred share purchase rights per common share	1
Class of warrant or right, number of securities called by each warrant or right	0.001
Right expiration period	1 year
Class of warrant or right, terms, exercisable threshold percentage	15.00%

X

- Definition

Class Of Warrant Or Right, Dividends Distribution, Number Of Rights

+ References

No definition available.

+ Details

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Namespace Prefix:	dvax_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Class Of Warrant Or Right, Term

+ References

No definition available.

+ Details

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Namespace Prefix:	dvax_
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Balance Type:	na
Period Type:	duration

X

- Definition

Class Of Warrant Or Right, Terms, Exercisable Threshold Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	dvax_
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X

- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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- Details

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X

- Details

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