Leases - Supplemental Cash Flow Information and Non-Cash Activity Related to Operating Leases (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Leases [Abstract] | ||
| Right-of-use assets obtained in exchange for new operating lease liabilities | $ 342 | $ 872 |
| Right-of-use assets obtained in exchange for new finance lease liabilities | 69 | 63 |
| Other non-cash increases in operating lease right-of-use assets | 12 | 78 |
| Other non-cash decrease in financing lease right-of-use assets | $ (26) | $ (8) |