Statement Of Changes In Equity [Abstract]

SES FDR - Filing #2811281

Concept	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	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	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	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	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	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	3,758,000,000 EUR	—	625,000,000 EUR	—	—	905,000,000 EUR	—	2,137,000,000 EUR	—	—	57,000,000 EUR	—	1,564,000,000 EUR	—	696,000,000 EUR	321,000,000 EUR	95,000,000 EUR	3,701,000,000 EUR	5,658,000,000 EUR	—	—	—	—	—	—	—	1,175,000,000 EUR	2,428,000,000 EUR	62,000,000 EUR	1,564,000,000 EUR	34,000,000 EUR	80,000,000 EUR	696,000,000 EUR	153,000,000 EUR	5,596,000,000 EUR	—	—	—	189,000,000 EUR	453,000,000 EUR	2,227,000,000 EUR	1,175,000,000 EUR	5,733,000,000 EUR	351,000,000 EUR	5,670,000,000 EUR	1,636,000,000 EUR	63,000,000 EUR	719,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	- EUR	904,000,000 EUR	—	905,000,000 EUR	—	- EUR	- EUR	—	1,000,000 EUR	—	905,000,000 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	—	- EUR	- EUR	- EUR	35,000,000 EUR	- EUR	1,000,000 EUR	34,000,000 EUR	—	—	—	—	—	—	—	—	—	34,000,000 EUR	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	- EUR	169,000,000 EUR	—	169,000,000 EUR	—	- EUR	- EUR	—	- EUR	—	- EUR	- EUR	—	169,000,000 EUR	—	- EUR	—	—	—	—	—	- EUR	- EUR	4,000,000 EUR	204,000,000 EUR	- EUR	2,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—	202,000,000 EUR	- EUR	198,000,000 EUR	—	—	—	—	—	—	—	—	—	—
Comprehensive income	- EUR	1,073,000,000 EUR	—	1,074,000,000 EUR	—	- EUR	- EUR	—	1,000,000 EUR	—	905,000,000 EUR	- EUR	—	169,000,000 EUR	—	- EUR	—	—	—	—	—	- EUR	- EUR	4,000,000 EUR	169,000,000 EUR	- EUR	1,000,000 EUR	34,000,000 EUR	—	—	—	—	—	—	—	—	—	168,000,000 EUR	- EUR	198,000,000 EUR	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	- EUR	220,000,000 EUR	—	220,000,000 EUR	—	220,000,000 EUR	- EUR	—	- EUR	—	- EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	—	- EUR	- EUR	219,000,000 EUR	219,000,000 EUR	- EUR	- EUR	- EUR	—	—	—	—	—	—	—	—	—	219,000,000 EUR	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	- EUR	6,000,000 EUR	—	- EUR	—	1,000,000 EUR	- EUR	—	6,000,000 EUR	—	- EUR	- EUR	—	1,000,000 EUR	—	- EUR	—	—	—	—	—	- EUR	- EUR	- EUR	2,000,000 EUR	- EUR	2,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—	- EUR	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	- EUR	9,000,000 EUR	—	9,000,000 EUR	—	9,000,000 EUR	- EUR	—	- EUR	—	- EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	—	- EUR	- EUR	9,000,000 EUR	9,000,000 EUR	- EUR	- EUR	- EUR	—	—	—	—	—	—	—	—	—	9,000,000 EUR	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—