Disclosure Of Income Tax [Text Block]

M&G PLC - Filing #1586526

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Disclosure of income tax [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Major components of tax expense (income) [abstract]
Tax expense (income)	—	—	—	—	—	—	—	—	615,000,000 GBP	—	463,000,000 GBP	—	—	—	—	—	—	—	—	—
Current and deferred tax relating to items charged or credited directly to equity [abstract]
Current and deferred tax relating to items credited (charged) directly to equity	– GBP	– GBP	– GBP	4,000,000 GBP	25,000,000 GBP	—	– GBP	– GBP	25,000,000 GBP	21,000,000 GBP	8,000,000 GBP	– GBP	13,000,000 GBP	– GBP	5,000,000 GBP	—	– GBP	– GBP	– GBP	8,000,000 GBP
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to remeasurements of defined benefit plans included in other comprehensive income	—	—	—	—	—	—	—	—	1 9 GBP	—	23,000,000 GBP	—	—	—	—	—	—	—	—	—
Disclosure of temporary difference, unused tax losses and unused tax credits [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and liabilities [abstract]
Deferred tax assets	—	—	—	—	—	119,000,000 GBP	—	—	—	—	—	—	—	—	—	10 8 GBP	—	—	—	—
Deferred tax liabilities	—	—	—	—	—	1, 157 GBP	—	—	—	—	—	—	—	—	—	91 6 GBP	—	—	—	—
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]