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Taxation - Tax rate (Details) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |
Main rate of UK corporation tax | 25.00% |  |  | 19.00% | 19.00%
Change in tax rate announced |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |
Main rate of UK corporation tax |  | 19.00% | 19.00% |  |

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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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