Statement Of Comprehensive Income [Abstract]

Barratt Developments PLC - Filing #1771111

Concept	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30	2020-07-01 to 2021-06-30
Statement of comprehensive income [abstract]
Profit (loss)	—	—	515,200,000 GBP	—	—	—	—	—	—	300,000 GBP	– GBP	660,100,000 GBP	– GBP	– GBP	– GBP	– GBP	659,800,000 GBP	659,800,000 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 remeasurements of defined benefit plans	—	—	– GBP	—	—	—	—	—	—	– GBP	– GBP	2,200,000 GBP	– GBP	– GBP	– GBP	– GBP	2,200,000 GBP	2,200,000 GBP
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	– GBP	—	—	—	—	—	—	– GBP	– GBP	400,000 GBP	– GBP	– GBP	– GBP	– GBP	400,000 GBP	400,000 GBP
Comprehensive income	515,100,000 GBP	– GBP	515,200,000 GBP	– GBP	– GBP	– GBP	100,000 GBP	515,100,000 GBP	– GBP	300,000 GBP	– GBP	658,300,000 GBP	– GBP	– GBP	– GBP	– GBP	658,000,000 GBP	658,000,000 GBP
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	515,100,000 GBP	—	—	—	—	—	—	—	—	658,000,000 GBP	—	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	100,000 GBP	—	—	—	—	—	—	—	—	300,000 GBP	—	—	—	—	—	—