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Commitments and contingencies (Tables) | 12 Months Ended
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Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract] |
Commitments | The Company has the following delivery installment commitments:
| As at December 31, 2021 | As at December 31, 2020
(In $ millions) | Delivery installment | Back-end fee | Delivery installment | Back-end fee
Delivery installments for jack-up drilling rigs | 621.0 |  | 9.0 |  | 621.0 |  | 9.0 |
Maturity of Commitments | The following table sets forth when our delivery installment commitments fall due as of December 31, 2021:
(In $ millions) | Less than 1 year | 2 years | 3 years | Thereafter | Total
Delivery installments for jack-up rigs | — |  | 621.0 |  | — |  | — |  | 621.0 |
Other Commercial Commitments | The Company has the following guarantee commitments:
| As of December 31,
(In $ millions) | 2021 | 2020
Surety bonds, bank guarantees and performance bonds | 20.8 |  | 43.3 |
Performance guarantee to Opex (1) | — |  | 5.9 |
Total | 20.8 |  | 49.2 |
(1) Effective August 4, 2021, upon sale of the Company's 49% interest in Opex, the performance guarantee provided to Opex was terminated, and the associated liability was derecognized (see Note 7 - Equity Method Investments). As of December 31, 2021, the expiry dates of these obligations are as follows:
(In $ millions) | Less than 1 year | 1-3 years | Total
Surety bonds, bank guarantees and performance bonds | 13.2 |  | 7.6 |  | 20.8 |
Total | 13.2 |  | 7.6 |  | 20.8 |
Assets Pledged as Collateral | Assets pledged as collateral
| As of December 31,
(In $ millions) | 2021 | 2020
Book value of jackup rigs pledged as collateral for long-term debt facilities | 2,730.8 |  | 2,824.6 |

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