| Document and Entity Information Statement | 6 Months Ended |
| Jun. 30, 2019shares | |
| Entity [Abstract] | |
| Entity Registrant Name | Luxfer Holdings PLC |
| Entity Central Index Key | 0001096056 |
| Current Fiscal Year End Date | --12-31 |
| Entity Filer Category | Accelerated Filer |
| Document Type | 10-Q/A |
| Document Period End Date | Jun. 30, 2019 |
| Document Fiscal Year Focus | 2019 |
| Document Fiscal Period Focus | Q2 |
| Amendment Flag | true |
| Amendment Description | Amendment to cover page to amend number of shares outstanding of Registrant’s only class of ordinary stock on June 30, 2019 |
| Entity Common Stock, Shares Outstanding | 27,377,787 |
| Entity Emerging Growth Company | false |
| Entity Small Business | false |
| Entity Current Reporting Status | Yes |
| Entity Shell Company | false |
