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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Sep. 30, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Operating leases: |  |  |
Operating lease right-of-use assets | $ 20,757 | $ 20,987 | $ 0
Current portion of operating lease liabilities | 1,798 | 1,803 | 0
Long-term operating lease liabilities | 18,826 | $ 18,832 | $ 0
Total operating lease liabilities | 20,624 |  |
Finance leases: |  |  |
Property and equipment, net | 560 |  |
Current portion of long-term debt | 27 |  |
Long-term debt | 591 |  |
Total finance lease liabilities | $ 618 |  |
Weighted average remaining lease term |  |  |
Operating leases | 13 years 9 months 18 days |  |
Finance leases | 20 years 7 months 6 days |  |
Weighted average discount rate |  |  |
Operating leases | 4.60% |  |
Finance leases | 7.30% |  |

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