Statement Of Changes In Equity [Abstract]

Sampo Oyj - Filing #2159939

Concept	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	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	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	As at 2023-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 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 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 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 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	6,378,000,000 EUR	—	—	424,000,000 EUR	—	—	98,000,000 EUR	742,000,000 EUR	—	— EUR	1,527,000,000 EUR	—	1,000,000 EUR	—	—	4,000,000 EUR	—	7,687,000,000 EUR	—	7,263,000,000 EUR	—	741,000,000 EUR	—	9,618,000,000 EUR	248,000,000 EUR	— EUR	— EUR	—	— EUR	248,000,000 EUR	— EUR	1,527,000,000 EUR	— EUR	— EUR	1,527,000,000 EUR	— EUR	— EUR	248,000,000 EUR	— EUR	— EUR	10,178,000,000 EUR	—	560,000,000 EUR	8,482,000,000 EUR	98,000,000 EUR	741,000,000 EUR	9,618,000,000 EUR	10,178,000,000 EUR	560,000,000 EUR	98,000,000 EUR	8,730,000,000 EUR	4,000,000 EUR	—	—	4,000,000 EUR	—	—	0 EUR	—	—	— EUR	1,622,000,000 EUR	— EUR	7,000,000 EUR	9,000,000 EUR	16,000,000 EUR	— EUR	25,000,000 EUR	1,646,000,000 EUR	4,000,000 EUR	4,000,000 EUR	23,000,000 EUR	— EUR	— EUR	1,527,000,000 EUR	— EUR	1,527,000,000 EUR	13,464,000,000 EUR	12,788,000,000 EUR	98,000,000 EUR	676,000,000 EUR	415,000,000 EUR	12,805,000,000 EUR	651,000,000 EUR	415,000,000 EUR	98,000,000 EUR	9,945,000,000 EUR	13,456,000,000 EUR	— EUR	9,952,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	70,000,000 EUR	1,323,000,000 EUR	—	— EUR	— EUR	—	—	— EUR	—	—	— EUR	—	— EUR	1,393,000,000 EUR	—	— EUR	—	1,323,000,000 EUR	—	— EUR	—	— EUR	—	—	—	—	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	2,240,000,000 EUR	—	—	—	—	—	—	—	—	—	—	2,107,000,000 EUR	— EUR	—	2,107,000,000 EUR	133,000,000 EUR	—	— EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	— EUR	5,000,000 EUR	—	1,000,000 EUR	— EUR	—	—	— EUR	—	—	— EUR	—	1,000,000 EUR	8,000,000 EUR	—	— EUR	—	8,000,000 EUR	—	— EUR	—	1,396,000,000 EUR	—	—	—	—	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	1,639,000,000 EUR	—	—	—	—	—	—	—	—	—	—	1,639,000,000 EUR	268,000,000 EUR	—	26,000,000 EUR	— EUR	—	— EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	70,000,000 EUR	1,318,000,000 EUR	—	1,000,000 EUR	— EUR	—	—	— EUR	—	—	— EUR	—	1,000,000 EUR	1,386,000,000 EUR	—	— EUR	—	1,316,000,000 EUR	—	— EUR	—	1,396,000,000 EUR	—	—	—	—	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	601,000,000 EUR	—	—	—	—	—	—	—	—	—	—	468,000,000 EUR	268,000,000 EUR	—	2,133,000,000 EUR	133,000,000 EUR	—	— EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	187,000,000 EUR	1,321,000,000 EUR	—	— EUR	— EUR	—	—	— EUR	—	—	— EUR	—	— EUR	1,508,000,000 EUR	—	— EUR	—	1,321,000,000 EUR	—	— EUR	—	— EUR	—	—	—	—	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	2,393,000,000 EUR	—	—	—	—	—	—	—	—	—	—	2,186,000,000 EUR	— EUR	—	2,186,000,000 EUR	207,000,000 EUR	—	— EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through other changes, equity	—	15,000,000 EUR	51,000,000 EUR	—	— EUR	— EUR	—	—	— EUR	—	—	— EUR	—	— EUR	36,000,000 EUR	—	— EUR	—	51,000,000 EUR	—	— EUR	—	1,000,000 EUR	—	—	—	—	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	24,000,000 EUR	—	—	—	—	—	—	—	—	—	—	9,000,000 EUR	58,000,000 EUR	—	51,000,000 EUR	15,000,000 EUR	—	— EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	3,000,000 EUR	11,000,000 EUR	—	— EUR	— EUR	—	—	— EUR	—	—	— EUR	—	— EUR	14,000,000 EUR	—	— EUR	—	11,000,000 EUR	—	— EUR	—	— EUR	—	—	—	—	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	8,000,000 EUR	—	—	—	—	—	—	—	—	—	—	6,000,000 EUR	— EUR	—	6,000,000 EUR	2,000,000 EUR	—	— EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—