Description of the Business and Summary of Significant Accounting Policies - Stock-based compensation (Narrative) (Details) - Restricted Stock - shares shares in Millions |
1 Months Ended | 6 Months Ended |
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Dec. 31, 2017 |
Jun. 30, 2025 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Vesting period | 4 years | |
| Shares granted (in shares) | 11.7 | |
| Chief Executive Officer | Co-Founder Grant | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Shares granted (in shares) | 10.3 |
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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