Income Taxes - Additional Information (Detail) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Income Tax Disclosure [Abstract] | ||
| Discrete tax benefits related to vested stock based compensation awards | $ 72 | $ 62 |
| Net discrete tax benefit realized from changes in organizational tax structure | $ 149 | |