Statement Of Comprehensive Income [Abstract]

MARSTON'S PLC - Filing #1824612

Concept	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2021-10-03 to 2022-10-01	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02	2020-10-04 to 2021-10-02
Statement of comprehensive income [abstract]
Profit (loss)	– GBP	– GBP	– GBP	– GBP	137,200,000 GBP	137,200,000 GBP	– GBP	– GBP	– GBP	162,800,000 GBP	– GBP	– GBP	162,800,000 GBP	– GBP	– GBP	– GBP	– GBP
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets	– GBP	– GBP	– GBP	– GBP	105,800,000 GBP	– GBP	105,800,000 GBP	– GBP	– GBP	59,100,000 GBP	– GBP	59,100,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	– GBP	– GBP	– GBP	– GBP	23,300,000 GBP	23,300,000 GBP	– GBP	– GBP	– GBP	17,500,000 GBP	– GBP	– GBP	17,500,000 GBP	– GBP	– GBP	– GBP	– GBP
Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]
Cash flow hedges [abstract]
Gains (losses) on cash flow hedges, before tax	– GBP	– GBP	– GBP	23,900,000 GBP	23,900,000 GBP	– GBP	– GBP	– GBP	– GBP	5,900,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	5,900,000 GBP
Other comprehensive income, before tax, cash flow hedges	– GBP	– GBP	– GBP	17,000,000 GBP	17,000,000 GBP	– GBP	– GBP	– GBP	– GBP	19,700,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	19,700,000 GBP
Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax	– GBP	– GBP	– GBP	– GBP	800,000 GBP	800,000 GBP	– GBP	– GBP	—	– GBP	—	—	—	—	—	—	—
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to changes in revaluation surplus of property, plant and equipment, right-of-use assets and intangible assets included in other comprehensive income	– GBP	– GBP	– GBP	– GBP	14,700,000 GBP	– GBP	14,700,000 GBP	– GBP	– GBP	9,800,000 GBP	– GBP	9,800,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP
Income tax relating to remeasurements of defined benefit plans included in other comprehensive income	– GBP	– GBP	– GBP	– GBP	5,800,000 GBP	5,800,000 GBP	– GBP	– GBP	– GBP	2,500,000 GBP	– GBP	– GBP	2,500,000 GBP	– GBP	– GBP	– GBP	– GBP
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	—	—	20,500,000 GBP	—	—	—	—	12,300,000 GBP	—	—	—	—	—	—	—
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]
Income tax relating to cash flow hedges included in other comprehensive income	– GBP	– GBP	– GBP	10,200,000 GBP	10,200,000 GBP	– GBP	– GBP	– GBP	– GBP	1,700,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	1,700,000 GBP
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	—	—	—	10,200,000 GBP	—	—	—	—	1,700,000 GBP	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	—	104,200,000 GBP	—	—	—	—	13,400,000 GBP	—	—	—	—	—	—	—
Comprehensive income	– GBP	– GBP	– GBP	30,700,000 GBP	241,400,000 GBP	153,900,000 GBP	56,800,000 GBP	– GBP	– GBP	149,400,000 GBP	– GBP	55,700,000 GBP	177,800,000 GBP	– GBP	– GBP	– GBP	27,300,000 GBP