Segment and Geographic Information - Summary of Reconciliation of Segment Financial Information to Loss from Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Segment Reporting [Line Items]
Income from operations	$ 753,998	$ 176,048
Total stock-based compensation expense	201,592	155,339
Reconciling items
Segment Reporting [Line Items]
Income from operations	753,998	176,048
Research and development expenses	124,436	103,055
General and administrative expenses	112,341	107,663
Total stock-based compensation expense	201,592	155,339
Operating Segments
Segment Reporting [Line Items]
Total contribution	$ 1,192,367	$ 542,105

The net result for the period of deducting operating expenses from operating revenues.

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+ Details

- 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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+ Details