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Related-Party Transactions (Details) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2022 £ / shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 £ / shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 $ / shares | Jul. 31, 2020
Nikkei-MEL Co. Limited |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  | 50.00% |  |  |  |
Ordinary shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Common stock, par value (in GBP per share) | (per share) |  |  | £ 0.50 | $ 0.50 | £ 0.50 | $ 0.50 | $ 0.50 |
Equity Method Investee | Luxfer Uttam India Private Limited |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  | 51.00%
Equity Method Investee | Nikkei-MEL Co. Limited |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Accounts receivable, related parties |  |  |  | $ 0.1 |  | $ 0.1 |  |
Equity Method Investee | Sub161 Pty Limited |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  | 26.40% |  |
Sales to related parties |  | $ 0.0 |  |  |  |  |  |
Equity Method Investee | Elektron | Nikkei-MEL Co. Limited |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Sales to related parties | $ 0.6 | 0.8 |  |  |  |  |  |
Equity Method Investee | Gas Cylinders | Luxfer Uttam India Private Limited |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Sales to related parties |  | $ 1.5 |  |  |  |  |  |
Executive Leadership Team | Ordinary shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Number of common stock owned by related parties (in shares) | shares |  |  |  | 233,724 |  | 500,237 |  |
Number of awards held by related parties (in shares) | shares |  |  |  | 231,668 |  | 299,021 |  |

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