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Leases (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Future undiscounted cash flows for operating leases and reconciliation to operating lease liability | For operating leases where we are the lessee, our future undiscounted cash flows are as follows:
(In $ millions) |  | Year ended December 31, 2020
2021 |  | 60 |
2022 |  | 16 |
2023 |  | 2 |
2024 and thereafter |  | 1 |
Total |  | 79 |
The following table gives a reconciliation between the undiscounted cash flows and the related operating lease liability recognized in our Consolidated Balance Sheet as at December 31, 2020:
(In $ millions) |  | Year ended December 31, 2020 |  | Year ended December 31, 2019
Total undiscounted cash flows |  | 79 |  |  | 45 |
Less short term leases |  | — |  |  | (1) |
Less discount |  | (11) |  |  | (8) |
Operating lease liability |  | 68 |  |  | 36 |
Of which: |  |  |  |
Current |  | 51 |  |  | 12 |
Non-current |  | 17 |  |  | 24 |
Supplementary information regarding lease accounting | The following table gives supplementary information regarding our lease accounting at December 31, 2020:
(In $ million) |  | Year ended December 31, 2020 |  | Year ended December 31, 2019
Operating Lease Cost: |  |  |  |
Operating lease cost |  | 19 |  |  | 12 |
Short-term lease cost |  | 2 |  |  | 1 |
Total lease cost |  | 21 |  |  | 13 |
Other information: |  |  |  |
Cash paid for amounts included in the measurement of lease liabilities- Operating Cash flows |  | 21 |  |  | 13 |
Right-of-use assets obtained in exchange for operating lease liabilities during the period |  | 53 |  |  | 19 |
Weighted-average remaining lease term in months |  | 19 |  | 18
Weighted-average discount rate |  | 32 | % |  | 13 | %
Operating subleases and leases, lessor, future undiscounted cash flows, and income |
(In $ millions) |  | Year ended December 31, 2020
2021 |  | 28 |
2022 |  | 28 |
2023 |  | 28 |
2024 |  | 22 |
2025 and thereafter |  | 19 |
Total |  | 125 |
Refer to Note 9 - "Other revenues" for comparative information on income from operating leases.

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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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- 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=121609121&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of maturity of undiscounted cash flows to be received by lessor on annual basis for operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981 + Details
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