Profit Or Loss [Abstract]

Spirax-Sarco Engineering PLC - Filing #1871845

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	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	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	1,610,600,000 GBP	—	—	– GBP	1,610,600,000 GBP	—	—	—	—	—	—	—	—	– GBP	1,344,500,000 GBP	—	1,344,500,000 GBP	—
Profit (loss) from operating activities	—	—	318,800,000 GBP	—	—	61,400,000 GBP	380,200,000 GBP	—	—	—	—	—	—	—	—	19,400,000 GBP	340,300,000 GBP	—	320,900,000 GBP	—
Finance income	—	—	5,600,000 GBP	—	—	– GBP	5,600,000 GBP	—	—	—	—	—	—	—	—	– GBP	3,400,000 GBP	—	3,400,000 GBP	—
Finance costs	—	—	16,300,000 GBP	—	—	1,100,000 GBP	15,200,000 GBP	—	—	—	—	—	—	—	—	– GBP	9,800,000 GBP	—	9,800,000 GBP	—
Profit (loss) before tax	—	—	308,100,000 GBP	—	—	62,500,000 GBP	370,600,000 GBP	—	—	—	—	—	—	—	—	19,400,000 GBP	333,900,000 GBP	—	314,500,000 GBP	—
Tax expense (income)	—	—	83,100,000 GBP	—	—	9,400,000 GBP	92,500,000 GBP	—	—	—	—	—	—	—	—	4,300,000 GBP	83,900,000 GBP	—	79,600,000 GBP	—
Profit (loss)	– GBP	– GBP	225,000,000 GBP	224,700,000 GBP	300,000 GBP	53,100,000 GBP	278,100,000 GBP	224,700,000 GBP	– GBP	– GBP	300,000 GBP	– GBP	234,600,000 GBP	– GBP	– GBP	15,100,000 GBP	250,000,000 GBP	– GBP	234,900,000 GBP	234,600,000 GBP
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	224,700,000 GBP	—	—	53,100,000 GBP	277,800,000 GBP	—	—	—	—	—	—	—	—	15,100,000 GBP	249,700,000 GBP	—	234,600,000 GBP	—
Profit (loss), attributable to non-controlling interests	—	—	300,000 GBP	—	—	– GBP	300,000 GBP	—	—	—	—	—	—	—	—	– GBP	300,000 GBP	—	300,000 GBP	—
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	3.051	—	—	—	3.772	—	—	—	—	—	—	—	—	—	3.389	—	3.183	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	3.044	—	—	—	3.763	—	—	—	—	—	—	—	—	—	3.380	—	3.175	—