Disclosure Of Fair Value Measurement [Text Block]

Just Group PLC - Filing #2009931

Concept	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01
Disclosure of fair value measurement [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [abstract]
Disclosure of fair value measurement of assets [line items]
Assets	31,838,000,000.000000 GBP	—	—	—	—	—	—	—	—	25,412,000,000.000000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	26,401,000,000.000000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Reconciliation of changes in fair value measurement, assets [abstract]
Disclosure of fair value measurement of liabilities [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of liabilities [abstract]
Disclosure of fair value measurement of liabilities [line items]
Liabilities	30,635,000,000.000000 GBP	—	—	—	—	—	—	—	—	24,309,000,000.000000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	24,905,000,000.000000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Reconciliation of changes in fair value measurement, liabilities [abstract]
Disclosure of fair value measurement of equity [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of equity [abstract]
Disclosure of fair value measurement of equity [line items]
Equity	1,203,000,000.000000 GBP	259,000,000.000000 GBP	943,000,000.000000 GBP	2,000,000.000000 GBP	95,000,000.000000 GBP	104,000,000.000000 GBP	883,000,000.000000 GBP	1,205,000,000.000000 GBP	322,000,000.000000 GBP	1,103,000,000.000000 GBP	938,000,000.000000 GBP	2,000,000.000000 GBP	95,000,000.000000 GBP	354,000,000.000000 GBP	104,000,000.000000 GBP	783,000,000.000000 GBP	322,000,000.000000 GBP	1,105,000,000.000000 GBP	– GBP	1,176,000,000.000000 GBP	33,000,000.000000 GBP	95,000,000.000000 GBP	104,000,000.000000 GBP	2,000,000.000000 GBP	977,000,000.000000 GBP	944,000,000.000000 GBP	1,496,000,000.000000 GBP	944,000,000.000000 GBP	104,000,000.000000 GBP	2,000,000.000000 GBP	2,440,000,000.000000 GBP	95,000,000.000000 GBP	2,120,000,000.000000 GBP	944,000,000 GBP	944,000,000 GBP	– GBP	– GBP	944,000,000 GBP	– GBP	– GBP	944,000,000 GBP	2,442,000,000.000000 GBP	322,000,000.000000 GBP	1,498,000,000.000000 GBP	322,000,000.000000 GBP
Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract]