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Stock-Based Compensation Expense - Schedule of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2026 USD ($) $ / shares shares | Dec. 31, 2025 USD ($) $ / shares shares
Number of Shares Subject to Options (in thousands) |  |
Beginning balance (in shares) | shares | 9,178 |
Cancelled, forfeited, and expired (in shares) | shares | (17) |
Exercised (in shares) | shares | (1,759) |
Ending balance (in shares) | shares | 7,402 | 9,178
Weighted-Average Exercise Price (per Option) |  |
Beginning balance (in dollars per share) | $ / shares | $ 3.64 |
Cancelled, forfeited, and expired (in dollars per share) | $ / shares | 1.05 |
Exercised (in dollars per share) | $ / shares | 3.50 |
Ending balance (in dollars per share) | $ / shares | $ 3.68 | $ 3.64
Weighted-Average Remaining Contractual Term (Years) | 2 years 8 months 15 days | 3 years 25 days
Aggregate Intrinsic Value (in millions) | $ | $ 375 | $ 710

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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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