Legal Fees, Post-judgement Interest Rate, Percentage

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- Definition

Loss Contingency, Damages Dismissed, Value

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- Definition

Percentage of Settlement Class That Opted Out Of Court Approved Settlement

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- Definition

The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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- Definition

Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of loss from litigation settlement for amount awarded to other party. Excludes claims within an insurance entity's normal claims settlement process.

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- 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.

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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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Number of pending claims pertaining to a loss contingency.

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COMMITMENTS AND CONTINGENCIES (Details)						1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details)	Oct. 16, 2026 USD ($)	Aug. 21, 2026 USD ($)	Jun. 30, 2026 USD ($)	Sep. 15, 2022 USD ($)	May 09, 2022 USD ($)	Mar. 31, 2026 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Feb. 26, 2025 lawsuit	Dec. 04, 2024 lawsuit
Loss Contingencies [Line Items]
Litigation settlements							$ 16,000,000		$ 16,000,000		$ 9,750,000
Litigation settlement							16,000,000	$ 0	16,000,000	$ 0
Pending Litigation
Loss Contingencies [Line Items]
Number of pending lawsuits \| lawsuit												2
PS Lit Recovery and Eminence Fund \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlements							$ 16,000,000		16,000,000
Litigation settlement loss									$ 16,000,000
Derivative Litigation \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement loss											$ 9,750,000
Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Settled Litigation
Loss Contingencies [Line Items]
Litigation settlement			$ 2,750,000
Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Settled Litigation \| Special Dividend to Shareholders
Loss Contingencies [Line Items]
Litigation settlement loss			$ 7,000,000
Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Judicial Ruling
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value				$ 2,060,479,287
Class Action, Case 12999 and Case 11220 \| Pending Litigation
Loss Contingencies [Line Items]
Percentage of settlement class that opted out of court approved settlement													3.00%
Number of pending lawsuits \| lawsuit													2
Case 2584CV00541-BLS1 and Case 2584CV00539-BLS1 \| Pending Litigation
Loss Contingencies [Line Items]
Number of pending lawsuits \| lawsuit												2
Pegasystems v. Appian Defamation Litigation
Loss Contingencies [Line Items]
Loss contingency, litigation damages sought by other party						$ 2,330,000,000
Gain contingency, litigation damages claimed						41,900,000
Loss contingency, damages claim dismissed		$ 2,330,000,000
Pegasystems v. Appian Defamation Litigation \| Lost Profits of Third Party
Loss Contingencies [Line Items]
Loss contingency, litigation damages sought by other party						31,800,000
Pegasystems v. Appian Defamation Litigation \| Disgorge of Company Profits
Loss Contingencies [Line Items]
Loss contingency, litigation damages sought by other party						$ 109,500,000
Trade Secret Misappropriation \| Appian Corp. v. Pegasystems Inc. & Youyong Zou
Loss Contingencies [Line Items]
Legal fees, post-judgement interest rate, percentage				6.00%
Trade Secret Misappropriation \| Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Judicial Ruling
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value					$ 2,036,860,045
Violation of the Virginia Computer Crimes Act \| Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Judicial Ruling
Loss Contingencies [Line Items]
Loss contingency, damages awarded, value					$ 1.00
Accused Marketing And Sales Activities \| Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Subsequent Event
Loss Contingencies [Line Items]
Loss contingency, litigation damages sought by other party	$ 284,600,000
Accused Pega Platform Revisions \| Appian Corp. v. Pegasystems Inc. & Youyong Zou \| Subsequent Event
Loss Contingencies [Line Items]
Loss contingency, litigation damages sought by other party	$ 1,360,000,000