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Leases - Maturities of Operating and Finance Lease Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finance Leases |  |
2021 | $ 100 |
2022 | 98 |
2023 | 96 |
2024 | 95 |
2025 | 95 |
Thereafter | 1,328 |
Total lease payments | 1,812 |
Less: imputed interest | (729) |
Total finance lease liabilities | 1,083 | $ 808
Operating Leases |  |
2021 | 2,688 |
2022 | 2,583 |
2023 | 2,496 |
2024 | 2,269 |
2025 | 2,089 |
Thereafter | 15,017 |
Total lease payments | 27,142 |
Less: imputed interest | (6,747) |
Total operating lease liabilities | 20,395 | $ 20,522
Total |  |
2021 | 2,788 |
2022 | 2,681 |
2023 | 2,592 |
2024 | 2,364 |
2025 | 2,184 |
Thereafter | 16,345 |
Total lease payments | 28,954 |
Less: imputed interest | (7,476) |
Total lease liabilities | 21,478 |
Future noncancelable subleases, future minimum payments | 306 |
Leases, amount due in excess of remaining estimated economic life | $ 2,300 |

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