Disclosure Of Fair Value Measurement [Text Block]

Babcock International Group PLC - Filing #1755149

Concept	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31
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	—	—	—	—	—	—	—	—	—	4,598,300,000 GBP	—	—	—	—	4,610,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	7,851,100,000 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	—	—	—	—	—	—	—	—	—	3,896,800,000 GBP	—	—	—	—	4,381,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	5,499,300,000 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	30,600,000 GBP	682 .0 GBP	768,800,000 GBP	4,000,000 GBP	30,600,000 GBP	303,400,000 GBP	56,400,000 GBP	873,000,000 GBP	1,241,400,000 GBP	701,500,000 GBP	19,500,000 GBP	– GBP	30,600,000 GBP	1,671,700,000 GBP	229,000,000 GBP	303,400,000 GBP	873,000,000 GBP	16,000,000 GBP	21 3.0 GBP	48,400,000 GBP	768,800,000 GBP	42,700,000 GBP	15,700,000 GBP	2,336,100,000 GBP	873,000,000 GBP	303,400,000 GBP	– GBP	– GBP	5 9.5 GBP	2 ,314.8 GBP	4 80.1 GBP	2 ,351.8 GBP	8,800,000 GBP	– GBP	37,000,000 GBP	5 9.5 GBP	768,800,000 GBP	– GBP	37,000,000 GBP	768,800,000 GBP	97,300,000 GBP	69,100,000 GBP	– GBP	2,299,100,000 GBP	15,700,000 GBP	873,000,000 GBP	2 8.2 GBP	303,400,000 GBP	4 88.9 GBP
Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract]