Commitments and Contingencies (Lease Cost) (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Right-of-use assets | $ 519 | $ 516 |
| Lease liabilities, current | 153 | 144 |
| Lease liabilities, noncurrent | $ 348 | $ 379 |
| Weighted-average remaining lease term (years) | 5 years | 5 years 1 month 6 days |
| Weighted-average discount rate | 3.77% | 3.87% |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other Assets, Noncurrent | Other Assets, Noncurrent |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Other Liabilities, Current | Other Liabilities, Current |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other noncurrent liabilities | Other noncurrent liabilities |