Disclosure Of Analysis Of Other Comprehensive Income By Item [Text Block]

Spirax-Sarco Engineering PLC - Filing #1871846

Concept	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31
Disclosure of analysis of other comprehensive income by item [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of analysis of other comprehensive income by item [abstract]
Disclosure of analysis of other comprehensive income by item [line items]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	– GBP	54,800,000 GBP	– GBP	54,800,000 GBP	– GBP	– GBP	– GBP	54,800,000 GBP	– GBP	– GBP	– GBP	6,800,000 GBP	– GBP	6,800,000 GBP	6,800,000 GBP	– GBP
Other comprehensive income, net of tax, cash flow hedges	– GBP	3,500,000 GBP	3,500,000 GBP	3,500,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	2,800,000 GBP	2,800,000 GBP	2,800,000 GBP	– GBP