Corporate Information And Statement Of Ifrs Compliance [Abstract]
| Concept |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2022-03-31 |
|---|---|---|---|
| Corporate information and statement of IFRS compliance [abstract] | |||
| Name of reporting entity or other means of identification |
Johnson Matthey plc
|
— | — |
| Legal form of entity |
|
— | — |
| Country of incorporation |
|
— | — |
| Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [text block] | — | — | — |
| Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [abstract] | |||
| Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items] | |||
| Current inventories | — |
1,702,000,000
GBP
|
1,549,000,000
GBP
|