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Leases and Capacity Purchase Agreements - Future Lease Payment under Terms of Capacity Purchase Agreement (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Lessee, Lease, Description [Line Items] |  |
2023 | $ 75 |
2024 | 79 |
2025 | 80 |
2026 | 80 |
2027 | 373 |
After 2027 | 428 |
Total | 1,115 |
Imputed interest | (248) |
Less: current maturities of lease obligations | (23) | $ (834)
Other financial liabilities | 844 | $ 863
Capacity Purchase Agreements |  |
Lessee, Lease, Description [Line Items] |  |
2023 | 2,200 |
2024 | 1,900 |
2025 | 1,500 |
2026 | 1,300 |
2027 | 900 |
After 2027 | 3,200 |
Total | $ 11,000 |

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