Leases - Summary of Information related to operating leases (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Leases [Abstract] | ||
| Right-of-use assets | $ 6,020 | $ 5,843 |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other | Other |
| Lease liabilities | $ 6,290 | $ 5,996 |
| Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Accounts payable, accruals and other liabilities | Accounts payable, accruals and other liabilities |
| Weighted average remaining term in years | 7 years 9 months 18 days | 7 years 6 months |
| Weighted average discount rate used to measure lease liabilities | 4.80% | 4.50% |