Other Assets and Leases - Balance Sheet Amounts Related to Leases (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Equity Method Investments and Joint Ventures [Abstract] | ||
| Other assets—ROU assets | $ 4,164 | $ 4,114 |
| Other liabilities and accrued expenses—Lease liabilities | $ 4,996 | $ 4,937 |
| Weighted average: | ||
| Remaining lease term, in years | 8 years 2 months 12 days | 8 years 6 months |
| Discount rate (as a percent) | 4.40% | 4.30% |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Other assets | Other assets |
| Operating Lease, Liability, Statement of Financial Position [Extensible List] | Accounts Payable and Accrued Liabilities | Accounts Payable and Accrued Liabilities |