Statement Of Changes In Equity [Abstract]

M&G PLC - Filing #5594759

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	—	—	—	14,435,000,000 GBP	383,000,000 GBP	120,000,000 GBP	42,000,000 GBP	6,000,000 GBP	—	—	3,281,000,000 GBP	—	11,642,000,000 GBP	9,000,000 GBP	—	3,323,000,000 GBP	—	—	4,084,000,000 GBP	—	—	15,223,000,000 GBP	—	11,633,000,000 GBP	—	—	43,000,000 GBP	379,000,000 GBP	—	119,000,000 GBP	21,000,000 GBP	4,041,000,000 GBP	—	26,000,000 GBP	4,311,000,000 GBP	11,613,000,000 GBP	48,000,000 GBP	370,000,000 GBP	15,504,000,000 GBP	47,000,000 GBP	119,000,000 GBP	4,263,000,000 GBP	70,000,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	— GBP	— GBP	360,000,000 GBP	— GBP	— GBP	—	—	—	—	—	360,000,000 GBP	13,000,000 GBP	—	347,000,000 GBP	—	—	— GBP	—	— GBP	309,000,000 GBP	—	297,000,000 GBP	— GBP	—	12,000,000 GBP	—	297,000,000 GBP	— GBP	—	—	— GBP	—	—	—	— GBP	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	— GBP	15,000,000 GBP	24,000,000 GBP	— GBP	— GBP	—	—	—	—	—	39,000,000 GBP	1,000,000 GBP	—	23,000,000 GBP	—	—	— GBP	—	— GBP	108,000,000 GBP	—	104,000,000 GBP	8,000,000 GBP	—	4,000,000 GBP	—	96,000,000 GBP	— GBP	—	—	— GBP	—	—	—	— GBP	—	—	—	—	—	—	—	—	—	—
Comprehensive income	— GBP	15,000,000 GBP	336,000,000 GBP	— GBP	— GBP	—	—	—	—	—	321,000,000 GBP	12,000,000 GBP	—	324,000,000 GBP	—	—	— GBP	—	— GBP	201,000,000 GBP	—	193,000,000 GBP	8,000,000 GBP	—	8,000,000 GBP	—	201,000,000 GBP	— GBP	—	—	— GBP	—	—	—	— GBP	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	15,000,000 GBP	— GBP	4,000,000 GBP	1,000,000 GBP	— GBP	—	—	—	—	—	— GBP	— GBP	—	4,000,000 GBP	—	—	20,000,000 GBP	—	22,000,000 GBP	5,000,000 GBP	—	5,000,000 GBP	— GBP	—	— GBP	—	— GBP	— GBP	—	—	— GBP	—	—	—	27,000,000 GBP	—	—	—	—	—	—	—	—	—	—
Increase (decrease) in equity	15,000,000 GBP	9,000,000 GBP	760,000,000 GBP	1,000,000 GBP	4,000,000 GBP	—	—	—	—	—	788,000,000 GBP	1,000,000 GBP	—	761,000,000 GBP	—	—	17,000,000 GBP	—	26,000,000 GBP	227,000,000 GBP	—	222,000,000 GBP	20,000,000 GBP	—	5,000,000 GBP	—	281,000,000 GBP	9,000,000 GBP	—	—	— GBP	—	—	—	44,000,000 GBP	—	—	—	—	—	—	—	—	—	—