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Share based compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Share-based Payment Charges | Share-based payment charges for the years ended December 31, 2021, 2020 and 2019 were as follows:
| For the Years Ended December 31,
(In $ millions) | 2021 | 2020 | 2019
Share-based payment charge | 0.1 | 0.7 | 3.9
Share Option, Activity | Details regarding share option issuances for the year ended December 31, 2021 and 2019 are as follows:
Grant Date | Number of Share Options Issued | Exercise Price | Share Price Grant Date
August 2021 | 5,150,000 |  | 2.00 | 1.40
March 2019 | 230,000 |  | 35.00 | 28.40
The table below sets forth the number of share options and weighted average grant date fair value price for the year ended December 31, 2021:
| Number | Weighted Avg. Fair Value Price (in $)
Outstanding at January 1, 2021 | 885,000 |  | 1.91 |
Granted during the year | 5,150,000 |  | 0.51 |
Forfeited during the year | (105,500) |  | 1.24 |
Expired during the year | (259,500) |  | 3.19 |
Outstanding at December 31, 2021 | 5,670,000 |  | 0.64 |
The table below sets forth the number of share options granted and weighted average exercise price during the years ended December 31, 2021, 2020 and 2019:
| 2021 | 2020 | 2019
| Number | Weighted Avg. Exercise Price (in $) | Number | Weighted Avg. Exercise Price (in $) | Number | Weighted Avg. Exercise Price (in $)
Outstanding at January 1 | 885,000 |  | 41.86 |  | 1,178,750 |  | 41.84 |  | 1,307,500 |  | 44.00 |
Granted during the year | 5,150,000 |  | 2.00 |  | — |  | — |  | 230,000 |  | 35.00 |
Forfeited during the year | (105,500) |  | 23.21 |  | (293,750) |  | 41.78 |  | (358,750) |  | 44.68 |
Expired during the year | (259,500) |  | 20.32 |  | — |  | — |  | — |  | — |
Outstanding at December 31 | 5,670,000 |  | 5.66 |  | 885,000 |  | 41.86 |  | 1,178,750 |  | 41.84 |
Exercisable at December 31 | 411,244 |  | 41.75 |  | 572,000 |  | 40.54 |  | 405,500 |  | 40.08 |
Stock Options, Valuation Assumptions | The fair value of equity settled options are measured at grant date using the Black Scholes option pricing model using the following inputs:
| 2021 | 2019
Expected future volatility | 57 | % | 32 | %
Expected dividend rate | — | % | — | %
Risk-free rate | 0.5% to 0.8% | 2 | %
Expected life after vesting | 2 years | 2 years

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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