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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Dec. 31, 2023 | Dec. 31, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Oct. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2018
Income tax contingencies |  |  |  |  |  |  |  |
Valuation allowance, deferred tax asset, decrease |  | $ (177,900) |  |  |  |  |  |
Unrecognized tax benefits |  | $ 184,921 | $ 108,002 |  | $ 203,794 |  | $ 164,531 |
Long-term taxes receivable, excluding interest |  |  | 3,282 |  | 109,947 |  |  |
Long-term tax payable, excluding interest |  |  | 1,393 |  | 109,383 |  |  |
Undistributed foreign earnings |  |  | 59,100 |  |  |  |  |
Undistributed foreign earnings, estimated foreign withholding taxes |  |  | 1,300 |  |  |  |  |
Long-term deferred tax assets |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Unrecognized tax benefits |  |  | 24,300 |  | 22,800 |  |  |
Long-term income taxes payable |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Unrecognized tax benefits |  |  | 1,000 |  | 106,200 |  |  |
California Franchise Tax Board | State and local tax authority |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Operating loss carryforwards |  |  | 171,900 |  |  |  |  |
Tax credit carryforwards, alternative minimum tax credit |  |  | 500 |  |  |  |  |
National Tax Services | Foreign tax authority |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Long-term taxes receivable, excluding interest | $ 0 |  |  | $ 114,900 | 105,100 | $ 82,700 |  |
Reduction in income tax receivable | 32,200 |  |  |  |  |  |  |
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit |  |  |  | 32,200 |  |  |  |
Long-term tax payable, excluding interest |  |  | 0 | $ 114,900 | 105,100 |  |  |
National Tax Services | Foreign tax authority | Tax year 2018 |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit |  |  |  |  |  |  |  | $ 74,800
National Tax Services | Foreign tax authority | Other assets |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Unrecognized tax benefits |  |  | 82,700 |  | $ 74,800 |  |  |
National Tax Services | Foreign tax authority | Long-term income taxes payable |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Unrecognized tax benefits | $ 82,700 |  |  |  |  |  |  |
Research and development tax credit carryforward | California Franchise Tax Board | State and local tax authority |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Tax credit carryforwards |  |  | 32,600 |  |  |  |  |
Research and development tax credit carryforward | Federal |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Tax credit carryforwards |  |  | 48,900 |  |  |  |  |
Foreign tax credit |  |  |  |  |  |  |  |
Income tax contingencies |  |  |  |  |  |  |  |
Tax credit carryforwards |  |  | $ 1,300 |  |  |  |  |

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