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Equity and Other Investments and Fair Value Measurements - (Additional Information) (Details) | 3 Months Ended
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Mar. 31, 2024 USD ($)
Fair Value Disclosures [Abstract] |
Fair value of asset transfer between levels | $ 0

X
- Definition Fair value of asset transfer between levels + References No definition available. + Details
Name: | inva_FairValueOfAssetTransferBetweenLevels
Namespace Prefix: | inva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration