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Equity - Preferred Stock - Additional Information (Detail) - £ / shares | Jun. 30, 2022 | Dec. 31, 2021
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Stockholders Equity Note [Line Items] |  |
Common stock, par value | £ 0.50 | £ 0.50

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- Definition Stockholders Equity Note [Line Items] + References No definition available. + Details
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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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