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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Supplemental Balance Sheet Information Related to Leases [Line Items] |  |
Operating lease ROU assets | $ 2,405 | $ 2,368
Short-term operating lease liabilities | 555 | 496
Long-term operating lease liabilities | $ 1,884 | $ 1,910
Weighted average discount rate | 1.82% | 1.25%
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accounts Payable and Accrued Liabilities, Current | Accounts Payable and Accrued Liabilities, Current
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Vehicles, net | Vehicles, net
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Total | Total
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Operating lease ROU assets | Operating lease ROU assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Operating lease ROU assets | Operating lease ROU assets
Property |  |
Supplemental Balance Sheet Information Related to Leases [Line Items] |  |
Operating lease ROU assets | $ 2,405 | $ 2,368
Short-term operating lease liabilities | 555 | 496
Long-term operating lease liabilities | 1,884 | 1,910
Operating lease liabilities | $ 2,439 | $ 2,406
Weighted average remaining lease term | 8 years 2 months 12 days | 8 years 9 months 18 days
Weighted average discount rate | 4.30% | 3.84%
Buses and support vehicles |  |
Supplemental Balance Sheet Information Related to Leases [Line Items] |  |
Operating lease ROU assets | $ 86 | $ 63
Short-term operating lease liabilities | 64 | 50
Long-term operating lease liabilities | 22 | 14
Operating lease liabilities | $ 86 | $ 64
Weighted average remaining lease term | 1 year 4 months 24 days | 1 year 3 months 18 days
Weighted average discount rate | 4.86% | 2.66%
Finance lease ROU assets, gross | $ 267 | $ 353
Accumulated amortization | (45) | (72)
Finance Lease ROU assets, net | 222 | 281
Short-term vehicle finance lease liabilities | 44 | 126
Long-term vehicle finance lease liabilities | 132 | 116
Total | $ 176 | $ 242
Weighted average remaining lease term | 2 years | 2 years 2 months 12 days
Weighted average discount rate | 1.82% | 1.97%

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