Statement Of Comprehensive Income [Abstract]

Paragon Banking Group PLC - Filing #1983795

Concept	2022-10-01 to 2023-09-30	2022-10-01 to 2023-09-30	2022-10-01 to 2023-09-30	2022-10-01 to 2023-09-30	2022-10-01 to 2023-09-30	2022-10-01 to 2023-09-30	2022-10-01 to 2023-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30	2021-10-01 to 2022-09-30
Statement of comprehensive income [abstract]
Profit (loss)	- GBP	- GBP	- GBP	153,900,000 GBP	153,900,000 GBP	- GBP	- GBP	313,600,000 GBP	- GBP	- GBP	- GBP	- GBP	- GBP	313,600,000 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	—	—	—	2,400,000 GBP	—	—	—	15,300,000 GBP	—	—	—	—	—	—
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to remeasurements of defined benefit plans included in other comprehensive income	—	—	—	800,000 GBP	—	—	—	3,700,000 GBP	—	—	—	—	—	—
Other comprehensive income	- GBP	- GBP	- GBP	1,600,000 GBP	1,600,000 GBP	- GBP	- GBP	11,600,000 GBP	- GBP	- GBP	- GBP	- GBP	- GBP	11,600,000 GBP
Comprehensive income	- GBP	- GBP	- GBP	155,500,000 GBP	155,500,000 GBP	- GBP	- GBP	325,200,000 GBP	- GBP	- GBP	- GBP	- GBP	- GBP	325,200,000 GBP