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Leases (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Lease, Cost | The following tables illustrate the financial impact of our leases as of and for the years ended December 31, 2020 and December 31, 2019, along with other supplemental information about our existing leases:
| Year Ended December 31
Millions of dollars | 2020 | 2019
Components of lease expense: |  |
Finance lease cost: |  |
Amortization of right-of-use assets | $ | 19 |  | $ | 19 |
Interest on lease liabilities | 32 |  | 51 |
Operating lease cost | 296 |  | 355 |
Short-term lease cost | 31 |  | 110 |
Sublease income | (4) |  | (5) |
Total lease cost | $ | 374 |  | $ | 530 |
Lease supplemental disclosure |
| As of December 31
Millions of dollars | 2020 | 2019
Components of balance sheet: |  |
Operating leases: |  |
Operating lease right-of-use assets (non-current) | $ | 786 |  | $ | 931 |
Current portion of operating lease liabilities | 251 |  | 208 |
Operating lease liabilities (non-current) | 758 |  | 825 |
Finance leases: |  |
Other assets (non-current) | $ | 113 |  | $ | 123 |
Other current liabilities | 24 |  | 19 |
Other liabilities (non-current) | 118 |  | 124 |
During the years ended December 31, 2020 and December 31, 2019, impairment charges were recorded related to operating and finance lease right-of-use assets totaling $191 million and $139 million, respectively. See Note 2 to the consolidated financial statements for further discussion on impairments and other charges.
| Year Ended December 31
Millions of dollars except years and percentages | 2020 | 2019
Other supplemental information: |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | $ | 299 |  | $ | 316 |
Operating cash flows from finance leases | 32 |  | 51 |
Financing cash flows from finance leases | 21 |  | 24 |
Right-of-use assets obtained in exchange for lease obligations: |  |
Operating leases (a) | $ | 447 |  | $ | 1,362 |
Finance leases | 39 |  | 74 |
Weighted-average remaining lease term: |  |
Operating leases | 8.6 years | 9.5 years
Finance leases | 6.4 years | 5.4 years
Weighted-average discount rate for operating leases | 4.1 | % | 4.4 | %
(a) The 2019 balance primarily consists of operating lease right-of-use assets exchanged for lease obligations upon implementation of the new lease accounting standard on January 1, 2019.
Lessee, Operating and Finance Leases, Liability Maturity Table | The following table summarizes the maturity of our operating and finance leases as of December 31, 2020:
Millions of dollars | Operating Leases | Finance Leases
2021 | $ | 287 |  | $ | 63 |
2022 | 233 |  | 63 |
2023 | 146 |  | 62 |
2024 | 94 |  | 49 |
2025 | 70 |  | 38 |
Thereafter | 428 |  | 55 |
Total lease payments | 1,258 |  | 330 |
Less imputed interest | (249) |  | (188) |
Total | $ | 1,009 |  | $ | 142 |

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- Definition Tabular disclosure of lessee's supplemental lease information. Includes, but is not limited to, location on balance sheet, cash flow impact and lease term data. + References No definition available. + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating and finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating and finance lease liability recognized in statement of financial position. + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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- References No definition available. + Details
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