Commitments and Contingencies	6 Months Ended
Jun. 30, 2025
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies Legal Proceedings and Contingencies The Company records accruals for loss contingencies associated with legal matters when it is probable that a liability will be incurred and the amount of the loss can be reasonably estimated. Certain ongoing legal proceedings or threats of legal proceedings to which the Company is a party, but in which the Company believes the possibility of an adverse impact is remote, are not discussed in this Note. Civil Opioid Litigation The Company has been named as a defendant in more than 400 civil lawsuits alleging that manufacturers, distributors, and retailers of opioids engaged in a longstanding practice to market opioids as safe and effective for the treatment of long-term chronic pain to increase the market for opioids and their own market shares for opioids, or alleging individual personal injury claims. Most of these cases have been consolidated and are pending in a federal multi-district litigation in the U.S. District Court for the Northern District of Ohio. See In re National Prescription Opiate Litigation, MDL No. 2804 (N.D. Ohio) (the "Opioid MDL"). Nearly two-thirds of the cases in the Opioid MDL were filed by cities and counties, while nearly one-third of the cases were filed by private plaintiffs, most of whom assert claims relating to neonatal abstinence syndrome ("NAS"). Cases brought by cities and counties outside of the MDL include, for example, 35 actions pending in New York state court, 9 writs filed in Pennsylvania state court, and actions brought in federal district courts in Florida and Georgia. Litigation against the Company in the Opioid MDL and the other federal courts is stayed. The New York state court has not yet entered a case management order. The Company has not yet been served with a complaint in any of the Pennsylvania state court matters. Additionally, on May 23, 2024, the Consumer Protection Division of the Office of the Attorney General of Maryland served on Indivior Inc. an administrative subpoena related generally to opioid products marketed and sold in Maryland. Indivior Inc.'s response to the subpoena remains ongoing. Pursuant to mediation, the Company, the Plaintiffs' Executive Committee (PEC), and an executive committee of state attorneys general, reached agreement on settlement terms, which would allow subdivisions, including those cities and counties that filed suit against Indivior as discussed above, to potentially sign on to the terms of the settlement. No states have indicated that they do not intend to opt in except the State of Maryland. Maryland could elect to join later in the process. The process for the subdivisions of the various states to elect whether to participate in the settlement will take time. The Company separately executed a master settlement agreement with the Tribal Leadership Committee (TLC). Whether the settlements will be finalized and the actions dismissed depends on sufficient participation in each agreement. The Company presently anticipates that the opt-in process will be complete in or before November 2025; however, there is no assurance that this will occur at that time. The Company has recorded a related provision of $79 million, reflecting the NPV of the agreed amount (See Note 7. Accrued Litigation Settlement Expenses). These settlements do not resolve private plaintiff cases against the Company (whether in the MDL or proceeding separately). With respect to cases outside the MDL that were not filed by cities or counties and therefore could not be part of the above settlement: On October 28, 2024, Indivior Inc. was named as one of numerous defendants in five individual complaints involving claims related to NAS and filed in West Virginia state court, that were transferred to West Virginia's Mass Litigation Panel. See In re Opioid Litigation, No. 22-C-9000 NAS (W.V. Kanawha Cnty. Cir. Ct.) ("WV MLP Action"). The plaintiffs filed a notice of appeal in the West Virginia Supreme Court as to all defendants, including Indivior, on February 27, 2025. The West Virginia Supreme Court has set a briefing schedule under which briefing on the appeal will close on August 4, 2025. The Company has begun its evaluation of all of the claims, believes it has meritorious defenses, and intends to vigorously defend itself in all actions that would not be resolved by the proposed settlement. Given the status and preliminary stage of litigation, no estimate of total possible loss for those matters can be made at this time. Dental Allegations The Company has been named as a defendant in numerous lawsuits alleging that SUBOXONE Film was defectively designed and caused dental injury, and that the Company failed to properly warn of the risks of such injuries. The plaintiffs generally seek compensatory damages, as well as punitive damages and attorneys’ fees and costs. Plaintiffs and potential plaintiffs related to these lawsuits generally can be grouped as follows: Dental MDL Plaintiffs: 1,877 cases naming 21,402 plaintiffs have been consolidated in multi-district litigation in the Northern District of Ohio. See In Re Suboxone (Buprenorphine/Naloxone) Film Products Liability Litigation, MDL No. 3092 (N.D. Oh.) (the "Dental MDL"). Dental MDL Schedule A Plaintiffs: One complaint filed in the Dental MDL on June 14, 2024 attached a schedule of nearly 10,000 plaintiffs (the “Schedule A Plaintiffs”). The parties negotiated a tolling agreement for the Schedule A Plaintiffs that would permit plaintiffs’ counsel additional time to investigate issues such as whether and when the Schedule A Plaintiffs used any Indivior product before determining whether to file individual complaints that ultimately would be coordinated with the Dental MDL. Plaintiffs indicated to the court they will dismiss more than 1,400 plaintiffs in the future, pursuant to a mechanism to be provided by the court. On July 11, 2025, the plaintiffs filed an amended Schedule A that reduced the number of Schedule A claimants to 8,333. State Court Plaintiffs: One complaint has been filed in New Jersey state court, and the parties have agreed to toll the claims of more than 975 other individuals in Delaware, New Jersey, and Virginia. Complaints have not yet been filed on behalf of the tolled individuals. Applications to file class actions based on similar allegations as in the Dental MDL, but also relating to SUBOXONE Tablets, were filed in Quebec and British Columbia against various subsidiaries of the Company, among other defendants, in April 2024. The Company has begun its evaluation of the claims, believes it has meritorious defenses, and intends to vigorously defend itself. Given the status and preliminary stage of litigation, no estimate of possible loss can be made at this time. U.K. Shareholder Claims On September 21, 2022, certain shareholders issued representative and multiparty claims against Indivior PLC in the High Court of Justice for the Business and Property Courts of England and Wales, King’s Bench Division. The claims made in both the representative and multiparty actions generally allege that Indivior PLC violated the U.K. Financial Services and Markets Act 2000 (“FSMA 2000”) by making false or misleading statements or material omissions in public disclosures, including the 2014 Demerger Prospectus, regarding an alleged product-hopping scheme regarding the switch from SUBOXONE Tablets to SUBOXONE Film. Indivior PLC filed an application to strike out the representative action. On December 5, 2023, the High Court handed down a judgment allowing Indivior PLC's application to strike out the representative action. On January 23, 2025, the Court of Appeals affirmed the application to strike out. On June 11, 2025, the UK Supreme Court refused the application for permission to appeal the Court of Appeal’s decision. The multiparty actions against Indivior remain pending and on June 25, 2025 those certain shareholders served their "Claim Form" on Indivior PLC related to the multiparty action. The Company has begun its evaluation of the remaining claims, believes it has meritorious defenses, and intends to vigorously defend itself. Given the status and preliminary stage of the litigation, no estimate of possible loss can be made at this time. U.S. Shareholder Claims A class action lawsuit was filed against Indivior PLC, Mark Crossley (the former CEO of the Company), and Ryan Preblick (the CFO of the Company) on August 2, 2024, alleging violations of certain U.S. federal securities laws, and the lead plaintiff filed an amended complaint on December 5, 2024 which also named Richard Simkin (the former CCO of the Company) as a defendant. The defendants moved to dismiss. On April 22, 2025, the court heard oral argument and granted the motion to dismiss. The court indicated that a formal opinion will follow, and the plaintiffs will have 30 days from the date of the opinion to amend their complaint. The Company has begun its evaluation of the claims, believes it has meritorious defenses, and intends to vigorously defend itself. Given the status and preliminary stage of the litigation, no estimate of possible loss can be made at this time. Opiant Shareholder Claims On November 8, 2023, plaintiff James Litten filed a class action complaint in the Delaware Court of Chancery alleging that former officers and directors of Opiant Pharmaceuticals, Inc. ("Opiant") breached fiduciary duties of care, loyalty, and good faith in connection with Indivior PLC's 2022 acquisition of Opiant. The court granted Opiant's motion to dismiss on June 6, 2025. The plaintiff's time to appeal has expired.

The Company records accruals for loss contingencies associated with legal matters when it is probable that a liability will be incurred and the amount of the loss can be reasonably estimated. Certain ongoing legal proceedings or threats of legal proceedings to which the Company is a party, but in which the Company believes the possibility of an adverse impact is remote, are not discussed in this Note.

The Company has been named as a defendant in more than 400 civil lawsuits alleging that manufacturers, distributors, and retailers of opioids engaged in a longstanding practice to market opioids as safe and effective for the treatment of long-term chronic pain to increase the market for opioids and their own market shares for opioids, or alleging individual personal injury claims. Most of these cases have been consolidated and are pending in a federal multi-district litigation in the U.S. District Court for the Northern District of Ohio. See In re National Prescription Opiate Litigation, MDL No. 2804 (N.D. Ohio) (the "Opioid MDL"). Nearly two-thirds of the cases in the Opioid MDL were filed by cities and counties, while nearly one-third of the cases were filed by private plaintiffs, most of whom assert claims relating to neonatal abstinence syndrome ("NAS"). Cases brought by cities and counties outside of the MDL include,

for example, 35 actions pending in New York state court, 9 writs filed in Pennsylvania state court, and actions brought in federal district courts in Florida and Georgia. Litigation against the Company in the Opioid MDL and the other federal courts is stayed. The New York state court has not yet entered a case management order. The Company has not yet been served with a complaint in any of the Pennsylvania state court matters.

Pursuant to mediation, the Company, the Plaintiffs' Executive Committee (PEC), and an executive committee of state attorneys general, reached agreement on settlement terms, which would allow subdivisions, including those cities and counties that filed suit against Indivior as discussed above, to potentially sign on to the terms of the settlement. No states have indicated that they do not intend to opt in except the State of Maryland. Maryland could elect to join later in the process. The process for the subdivisions of the various states to elect whether to participate in the settlement will take time. The Company separately executed a master settlement agreement with the Tribal Leadership Committee (TLC). Whether the settlements will be finalized and the actions dismissed depends on sufficient participation in each agreement. The Company presently anticipates that the opt-in process will be complete in or before November 2025; however, there is no assurance that this will occur at that time. The Company has recorded a related provision of $79 million, reflecting the NPV of the agreed amount (See Note 7. Accrued Litigation Settlement Expenses). These settlements do not resolve private plaintiff cases against the Company (whether in the MDL or proceeding separately).

On October 28, 2024, Indivior Inc. was named as one of numerous defendants in five individual complaints involving claims related to NAS and filed in West Virginia state court, that were transferred to West Virginia's Mass Litigation Panel. See In re Opioid Litigation, No. 22-C-9000 NAS (W.V. Kanawha Cnty. Cir. Ct.) ("WV MLP Action"). The plaintiffs filed a notice of appeal in the West Virginia Supreme Court as to all defendants, including Indivior, on February 27, 2025. The West Virginia Supreme Court has set a briefing schedule under which briefing on the appeal will close on August 4, 2025.

The Company has begun its evaluation of all of the claims, believes it has meritorious defenses, and intends to vigorously defend itself in all actions that would not be resolved by the proposed settlement. Given the status and preliminary stage of litigation, no estimate of total possible loss for those matters can be made at this time.

The Company has been named as a defendant in numerous lawsuits alleging that SUBOXONE Film was defectively designed and caused dental injury, and that the Company failed to properly warn of the risks of such injuries. The plaintiffs generally seek compensatory damages, as well as punitive damages and attorneys’ fees and costs. Plaintiffs and potential plaintiffs related to these lawsuits generally can be grouped as follows:

Dental MDL Schedule A Plaintiffs: One complaint filed in the Dental MDL on June 14, 2024 attached a schedule of nearly 10,000 plaintiffs (the “Schedule A Plaintiffs”). The parties negotiated a tolling agreement for the Schedule A Plaintiffs that would permit plaintiffs’ counsel additional time to investigate issues such as whether and when the Schedule A Plaintiffs used any Indivior product before determining whether to file individual complaints that ultimately would be coordinated with the Dental MDL. Plaintiffs

On September 21, 2022, certain shareholders issued representative and multiparty claims against Indivior PLC in the High Court of Justice for the Business and Property Courts of England and Wales, King’s Bench Division. The claims made in both the representative and multiparty actions generally allege that Indivior PLC violated the U.K. Financial Services and Markets Act 2000 (“FSMA 2000”) by making false or misleading statements or material omissions in public disclosures, including the 2014 Demerger Prospectus, regarding an alleged product-hopping scheme regarding the switch from SUBOXONE Tablets to SUBOXONE Film. Indivior PLC filed an application to strike out the representative action. On December 5, 2023, the High Court handed down a judgment allowing Indivior PLC's application to strike out the representative action. On January 23, 2025, the Court of Appeals affirmed the application to strike out. On June 11, 2025, the UK Supreme Court refused the application for permission to appeal the Court of Appeal’s decision. The multiparty actions against Indivior remain pending and on June 25, 2025 those certain shareholders served their "Claim Form" on Indivior PLC related to the multiparty action. The Company has begun its evaluation of the remaining claims, believes it has meritorious defenses, and intends to vigorously defend itself. Given the status and preliminary stage of the litigation, no estimate of possible loss can be made at this time.

A class action lawsuit was filed against Indivior PLC, Mark Crossley (the former CEO of the Company), and Ryan Preblick (the CFO of the Company) on August 2, 2024, alleging violations of certain U.S. federal securities laws, and the lead plaintiff filed an amended complaint on December 5, 2024 which also named Richard Simkin (the former CCO of the Company) as a defendant. The defendants moved to dismiss. On April 22, 2025, the court heard oral argument and granted the motion to dismiss. The court indicated that a formal opinion will follow, and the plaintiffs will have 30 days from the date of the opinion to amend their complaint.

On November 8, 2023, plaintiff James Litten filed a class action complaint in the Delaware Court of Chancery alleging that former officers and directors of Opiant Pharmaceuticals, Inc. ("Opiant") breached fiduciary duties of care, loyalty, and good faith in connection with Indivior PLC's 2022 acquisition of Opiant. The court granted Opiant's motion to dismiss on June 6, 2025. The plaintiff's time to appeal has expired.