Allowance for expected credit losses.

No definition available.

Name:	inva_AllowanceForExpectedCreditLosses
Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the royalty rate for combination products.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementAnnualRoyaltiesAsPercentageOfNetSalesForCombinationProducts
Namespace Prefix:	inva_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the royalty rate which the entity will receive under the collaboration agreement on the first defined level of annual global net sales.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementRoyaltyRateDefinedLevelOne
Namespace Prefix:	inva_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the royalty rate which the entity will receive under the collaboration agreement on sales which exceed the first defined level of annual global net sales.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementRoyaltyRateDefinedLevelTwo
Namespace Prefix:	inva_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the annual global net sales amount which determines the royalty rate applied under the collaboration arrangement.

+ References

No definition available.

+ Details

Name:	inva_CollaborativeArrangementSpecifiedSalesLevelForDeterminingRoyaltyRate
Namespace Prefix:	inva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of major customers.

+ References

No definition available.

+ Details

Name:	inva_NumberOfMajorCustomers
Namespace Prefix:	inva_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	inva_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix:	inva_
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/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 20
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_ProductMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=inva_CustomerOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=inva_CustomerTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=inva_CustomerThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_TradeAccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=inva_LabaCollaborationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=inva_GSKMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=inva_LongActingBeta2AgonistRelvarBreoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=inva_LongActingBeta2AgonistAnoroMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Description of Operations and Summary of Significant Accounting Policies (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026 USD ($) Customer	Jun. 30, 2025 Customer	Jun. 30, 2026 USD ($) Customer	Jun. 30, 2025 Customer	Dec. 31, 2025 USD ($) Customer
Description of Operations and Summary of Significant Accounting Policies
Allowance for Expected Credit Losses	$ 0		$ 0		$ 0
Net product sales
Description of Operations and Summary of Significant Accounting Policies
Number of major customers \| Customer	3	3	3	3	3
Net product sales \| Customer Concentration Risk \| Net Product Sales \| Customer One
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage	25.00%	26.00%	26.00%	27.00%
Net product sales \| Customer Concentration Risk \| Net Product Sales \| Customer Two
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage	21.00%	26.00%	23.00%	26.00%
Net product sales \| Customer Concentration Risk \| Net Product Sales \| Customer Three
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage	21.00%	24.00%	21.00%	25.00%
Net product sales \| Customer Concentration Risk \| Receivables from Net Product Sales \| Customer One
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage			30.00%		29.00%
Net product sales \| Customer Concentration Risk \| Receivables from Net Product Sales \| Customer Two
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage			28.00%		28.00%
Net product sales \| Customer Concentration Risk \| Receivables from Net Product Sales \| Customer Three
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage			15.00%		16.00%
Long-Acting Beta2 Agonist (LABA) Collaboration \| GSK \| RELVAR/BREO
Description of Operations and Summary of Significant Accounting Policies
Royalty rate for first level of annual global net sales (as a percent)			15.00%
Annual global sales level used to determine royalty rate			$ 3,000,000,000
Royalty rate for sales above first level of annual global net sales (as a percent)			5.00%
Long-Acting Beta2 Agonist (LABA) Collaboration \| GSK \| ANORO \| Minimum
Description of Operations and Summary of Significant Accounting Policies
Royalty rate for combination products (as a percent)			6.50%
Long-Acting Beta2 Agonist (LABA) Collaboration \| GSK \| ANORO \| Maximum
Description of Operations and Summary of Significant Accounting Policies
Royalty rate for combination products (as a percent)			10.00%