Organization and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Mar. 31, 2026 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Summary Of Significant Accounting Policies [Line Items] | |||||||
| Accumulated deficit incurred | $ (3,891,512) | $ (3,891,512) | $ (3,486,719) | ||||
| Cash requirements term | 12 months | ||||||
| Net Income (Loss) | (198,762) | $ (206,031) | $ (134,370) | $ (161,376) | $ (404,793) | $ (295,746) | |
| Cash, cash equivalents and investments | 1,700,000 | 1,700,000 | |||||
| Net cash provided by (used in) operating activities | 305,297 | 259,853 | |||||
| Equity investment without readily determinable fair value | $ 5,000 | ||||||
| Research and Development Expense [Member] | |||||||
| Summary Of Significant Accounting Policies [Line Items] | |||||||
| Prior period reclassification adjustment | $ 2,400 | $ 4,000 | |||||
| Other Assets [Member] | |||||||
| Summary Of Significant Accounting Policies [Line Items] | |||||||
| Equity investment without readily determinable fair value | $ 5,000 | $ 5,000 | |||||
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- Definition The minimum period of time, subsequent to the current balance sheet date, for which the company believes existing cash, cash equivalents and investments will be sufficient to fund its cash requirements. No definition available.
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- Definition Summary of significant accounting policies. No definition available.
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow (outflow) from operating activity, including, but not limited to, discontinued operation. Operating activity includes, but is not limited to, transaction, adjustment, and change in value not defined as investing or financing activity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of a reclassification adjustment made to prior period financial statement amounts. No definition available.
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- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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