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Leases (Tables) | 12 Months Ended
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Dec. 31, 2021
Leases [Abstract] |
Schedule of Leasing Activity | The components of our operating lease costs for the years ended December 31, 2021, 2020 and 2019 were as follows:
| Year Ended December 31,
Dollars in millions | 2021 |  | 2020 |  | 2019
Operating lease cost | $ | 51 |  |  | $ | 50 |  |  | $ | 54 |
Short-term lease cost | 528 |  |  | 112 |  |  | 121 |
Total lease cost | $ | 579 |  |  | $ | 162 |  |  | $ | 175 |
Additional information related to leases was as follows:
| December 31, |  | December 31, |  | December 31,
Dollars in millions | 2021 |  | 2020 |  | 2019
Cash paid for amounts included in the measurement of lease liabilities |  |  |  |  |
Operating cash flows from operating leases | $ | 59 |  |  | $ | 61 |  |  | $ | 56 |
Financing cash flows from finance leases | $ | 13 |  |  | $ | 11 |  |  | $ | 6 |
Right-of-use assets obtained in exchange for new operating lease liabilities | $ | 33 |  |  | $ | 62 |  |  | $ | 20 |
Right-of-use assets obtained in exchange for new finance lease liabilities | $ | 11 |  |  | $ | 34 |  |  | $ | 13 |
Weighted-average remaining lease term-operating (in years) | 6 years |  | 6 years |  | 8 years
Weighted-average remaining lease term-finance (in years) | 3 years |  | 3 years |  | 3 years
Weighted-average discount rate-operating leases | 6.3 | % |  | 6.8 | % |  | 7.6 | %
Weighted-average discount rate-finance leases | 4.0 | % |  | 4.7 | % |  | 5.6 | %
Schedule of Lease Maturity | The following is a maturity analysis of the future undiscounted cash flows associated with our lease liabilities as of December 31, 2021:
| Year
Dollars in millions | 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | Thereafter |  | Total
Future payments - operating leases | $ | 55 |  |  | $ | 51 |  |  | $ | 42 |  |  | $ | 36 |  |  | $ | 25 |  |  | $ | 85 |  |  | $ | 294 |
Future payments - finance leases | 9 |  |  | 6 |  |  | 4 |  |  | 2 |  |  | — |  |  | — |  |  | 21 |
Total future payments - all leases | $ | 64 |  |  | $ | 57 |  |  | $ | 46 |  |  | $ | 38 |  |  | $ | 25 |  |  | $ | 85 |  |  | $ | 315 |
Dollars in millions | Operating Leases |  | Finance Leases |  | Total
Total future payments | $ | 294 |  |  | $ | 21 |  |  | $ | 315 |
Less imputed interest | (65) |  |  | (1) |  |  | (66) |
Present value of future lease payments | $ | 229 |  |  | $ | 20 |  |  | $ | 249 |
Less current portion of lease obligations | (41) |  |  | (9) |  |  | (50) |
Noncurrent portion of lease obligations | $ | 188 |  |  | $ | 11 |  |  | $ | 199 |
Schedule of Lease Maturity | The following is a maturity analysis of the future undiscounted cash flows associated with our lease liabilities as of December 31, 2021:
| Year
Dollars in millions | 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | Thereafter |  | Total
Future payments - operating leases | $ | 55 |  |  | $ | 51 |  |  | $ | 42 |  |  | $ | 36 |  |  | $ | 25 |  |  | $ | 85 |  |  | $ | 294 |
Future payments - finance leases | 9 |  |  | 6 |  |  | 4 |  |  | 2 |  |  | — |  |  | — |  |  | 21 |
Total future payments - all leases | $ | 64 |  |  | $ | 57 |  |  | $ | 46 |  |  | $ | 38 |  |  | $ | 25 |  |  | $ | 85 |  |  | $ | 315 |
Dollars in millions | Operating Leases |  | Finance Leases |  | Total
Total future payments | $ | 294 |  |  | $ | 21 |  |  | $ | 315 |
Less imputed interest | (65) |  |  | (1) |  |  | (66) |
Present value of future lease payments | $ | 229 |  |  | $ | 20 |  |  | $ | 249 |
Less current portion of lease obligations | (41) |  |  | (9) |  |  | (50) |
Noncurrent portion of lease obligations | $ | 188 |  |  | $ | 11 |  |  | $ | 199 |

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- Definition Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + 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=123408670&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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