Equity Incentive Plans - Summary of Stock-Based Compensation Expense (Detail) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Total | $ 573 | $ 524 |
| Cost of revenues | ||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Total | 209 | 202 |
| Research and development | ||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Total | 277 | 212 |
| Selling, general and administrative | ||
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
| Total | $ 87 | $ 110 |