Legal Proceedings	12 Months Ended
Legal Proceedings	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Legal Proceedings 2019 Shareholder Derivative Lawsuit In January 2019, three derivative lawsuits were filed in the U.S. District Court for the Northern District of California which were later consolidated, purportedly on our behalf, naming as defendants the then current members of our Board of Directors along with certain of our executive officers. The complaints assert various state law causes of action, including for breaches of fiduciary duty, insider trading, and unjust enrichment. The consolidated action has been resolved per the settlement discussed below. On April 12, 2019, a derivative lawsuit was also filed in California Superior Court for Santa Clara County, purportedly on our behalf, naming as defendants the then-current members of our Board of Directors along with certain of our executive officers. The allegations in the complaint were similar to those in the derivative suits described above. The matter has been resolved per the settlement discussed below. In the first quarter of 2024, the parties to these actions entered into a settlement agreement whereby, plaintiffs dismissed the lawsuits and released their claims. In the settlement agreement, Align and the defendants deny any wrongdoing and are not making any monetary payments, other than an award of $575,000 in attorney’s fees to plaintiffs’ counsel, covered by insurance. On February 4, 2025, the court granted final approval of the settlement and closed the case. Antitrust Class Actions On June 5, 2020, a dental practice named Simon and Simon, PC doing business as City Smiles, brought an antitrust action in the U.S. District Court for the Northern District of California on behalf of itself and a putative class of similarly situated practices seeking treble monetary damages, interest, costs, attorneys’ fees, and injunctive relief relating to our alleged market activities in alleged clear aligner and intraoral scanner markets. Plaintiff filed an amended complaint and added VIP Dental Spas as a plaintiff on August 14, 2020. On December 18, 2023, the court certified a class of persons or entities that purchased Invisalign directly from Align between January 1, 2019 and March 31, 2022. The court denied Plaintiffs’ motion to certify a class of purchasers of scanners. On February 21, 2024, the court granted Align’s motion for summary judgment on all claims brought by the plaintiffs. Plaintiffs have appealed the district court’s summary judgment ruling to the United States Court of Appeals for the Ninth Circuit. Oral argument is scheduled for April 10, 2025. On May 3, 2021, an individual named Misty Snow brought an antitrust action in the U.S. District Court for the Northern District of California on behalf of herself and a putative class of similarly situated individuals seeking treble monetary damages, interest, costs, attorneys’ fees, and injunctive relief relating to our alleged market activities in alleged clear aligner and intraoral scanner markets based on Section 2 of the Sherman Act. Plaintiffs have filed several amended complaints adding new plaintiffs, various state law claims, and allegations based on Section 1 of the Sherman Act. On November 29, 2023, the court certified a class of indirect purchasers of Invisalign between July 1, 2018 and December 31, 2023 and a class of indirect purchasers of Invisalign seeking injunctive relief. On February 21, 2024, the court granted Align’s motion for summary judgment on the claims related to Section 2 allegations. The court entered judgment for the Section 2 and related state law claims on March 22, 2024. Plaintiffs have appealed the district court’s summary judgment ruling to the United States Court of Appeals for the Ninth Circuit. Oral argument is scheduled for April 10, 2025. We are currently unable to predict the outcome of these lawsuits and therefore we cannot determine the likelihood of loss, if any, nor estimate a range of possible loss. In June 2024, Align and the Section 1 plaintiffs reached a settlement in principle that would resolve all remaining claims in the Section 1 lawsuit. The settlement terms included a $27.5 million cash payment and coupons for class members. We agreed to settle the lawsuit to avoid the distraction and uncertainty of litigation. The plaintiffs have filed a motion requesting the Court approve the settlement. We are unable to predict the timeline or outcome of the motion to approve the settlement. We continue to believe that plaintiffs’ Section 1 claims are without merit and remain ready to vigorously defend ourselves against those claims. For the year ended December 31, 2024 Align accrued a loss of $27.5 million for the settlement of the Section 1 claims described above. Straumann Litigation On April 11, 2024, we filed a lawsuit in the U.S. District Court for the Western District of Texas against ClearCorrect Operating, LLC, ClearCorrect Holdings, Inc., and Institut Straumann AG. The complaint asserts claims of false advertising, unfair competition, civil conspiracy, and infringement of Align patents related to aligner material, treatment planning, and intraoral scanner technologies. Among other things, the complaint seeks relief enjoining the defendants’ infringement of multiple Align multilayer material patents through defendants’ manufacture, sale and offer for sale of aligners made with Zendura FLX/ClearQuartz materials. On June 20, 2024, Defendants filed motions to dismiss the Complaint, which are pending. On July 9, 2024, ClearCorrect Operating, LLC, ClearCorrect Holdings, Inc. and Straumann USA LLC filed counterclaims against Align for alleged antitrust violations, false advertising, unfair competition, and breach of contract. Among other things, the counterclaims seek relief enjoining Align’s accused business practices, invalidating Align’s asserted patents, and money damages. On September 13, 2024, we filed a motion to dismiss defendants’ counterclaims. On February 7, 2025, the magistrate judge recommended denial of the motion to dismiss. On February 21, 2025, we filed objections to the recommendation, which are pending before the district court judge. The District Court has scheduled a trial for February 16, 2026. Align believes these claims are without merit and intends to vigorously defend itself. Align is currently unable to predict the outcome of this lawsuit and cannot determine the likelihood of loss nor estimate a range of possible loss. In addition to the above, in the ordinary course of our operations, we are involved in a variety of claims, suits, investigations, and proceedings, including actions with respect to intellectual property claims, patent infringement claims, government investigations, labor and employment claims, breach of contract claims, tax, and other matters. Regardless of the outcome, these proceedings can have an adverse impact on us because of defense costs, diversion of management resources, and other factors. Although the results of complex legal proceedings are difficult to predict and our view of these matters may change in the future as litigation and events related thereto unfold; we currently do not believe that these matters, individually or in the aggregate, will materially affect our financial position, results of operations or cash flows.