Statement Of Cash Flows [Abstract]

M&G PLC - Filing #1868951

Concept	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	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	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	As at 2020-12-31
Statement of cash flows [abstract]
Cash flows from (used in) operating activities [abstract]
Profit (loss)	—	— GBP	— GBP	— GBP	1 , 6 1 9 GBP	1,632,000,000 GBP	13,000,000 GBP	1,632,000,000 GBP	— GBP	— GBP	9,000,000 GBP	— GBP	— GBP	— GBP	83,000,000 GBP	—	— GBP	— GBP	92,000,000 GBP	83,000,000 GBP	—
Adjustments to reconcile profit (loss) [abstract]
Other adjustments for non-cash items	—	—	—	—	242,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	4 5 6 GBP	—	—
Dividends received, classified as operating activities	—	—	—	—	2 ,220 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	2,06 6 GBP	—	—
Interest paid, classified as operating activities	—	—	—	—	8 8 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	14 4 GBP	—	—
Interest received, classified as operating activities	—	—	—	—	2 ,529 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	2 ,321 GBP	—	—
Income taxes paid (refund), classified as operating activities	—	—	—	—	2 6 8 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	33 2 GBP	—	—
Cash flows from (used in) operating activities	—	—	—	—	5 04 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	1,302,000,000 GBP	—	—
Cash flows from (used in) investing activities [abstract]
Cash flows from losing control of subsidiaries or other businesses, classified as investing activities	—	—	—	—	429,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	250,000,000 GBP	—	—
Proceeds from sales of property, plant and equipment, classified as investing activities	—	—	—	—	1,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	41,000,000 GBP	—	—
Purchase of property, plant and equipment, classified as investing activities	—	—	—	—	57 3 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	7 7 0 GBP	—	—
Cash flows from (used in) investing activities	—	—	—	—	3 6 8 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	4 6 6 GBP	—	—
Cash flows from (used in) financing activities [abstract]
Payments to acquire or redeem entity's shares	—	—	—	—	5 03 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	— GBP	—	—
Payments of lease liabilities, classified as financing activities	—	—	—	—	3 0 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	2 3 GBP	—	—
Interest paid, classified as financing activities	—	—	—	—	1 9 0 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	18 6 GBP	—	—
Cash flows from (used in) financing activities	—	—	—	—	1,202,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	6 81 GBP	—	—
Increase (decrease) in cash and cash equivalents before effect of exchange rate changes	—	—	—	—	2 , 0 74 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	155,000,000 GBP	—	—
Effect of exchange rate changes on cash and cash equivalents [abstract]
Effect of exchange rate changes on cash and cash equivalents	—	—	—	—	50,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	2 3 GBP	—	—
Cash and cash equivalents	4 ,884 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	6,908,000,000 GBP	—	—	—	—	6,7 76 GBP