Statement Of Changes In Equity [Abstract]

SES FDR - Filing #5985020

Concept	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	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	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	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	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	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	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	As at 2022-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	588,000,000 EUR	—	—	—	—	15,000,000 EUR	1,564,000,000 EUR	—	696,000,000 EUR	69,000,000 EUR	117,000,000 EUR	198,000,000 EUR	—	—	3,423,000,000 EUR	—	875,000,000 EUR	3,492,000,000 EUR	—	—	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
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	- EUR	- EUR	—	- EUR	15,000,000 EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	15,000,000 EUR	12,000,000 EUR	—	27,000,000 EUR	—	—	904,000,000 EUR	- EUR	—	905,000,000 EUR	—	- EUR	- EUR	—	1,000,000 EUR	—	905,000,000 EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	- EUR	- EUR	—	1,000,000 EUR	203,000,000 EUR	- EUR	- EUR	—	—	204,000,000 EUR	—	—	—	—	- EUR	1,000,000 EUR	—	204,000,000 EUR	—	—	169,000,000 EUR	- EUR	—	169,000,000 EUR	—	- EUR	- EUR	—	- EUR	—	- EUR	- EUR	169,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	- EUR	- EUR	—	1,000,000 EUR	218,000,000 EUR	- EUR	- EUR	—	—	204,000,000 EUR	—	—	—	—	15,000,000 EUR	13,000,000 EUR	—	231,000,000 EUR	—	—	1,073,000,000 EUR	- EUR	—	1,074,000,000 EUR	—	- EUR	- EUR	—	1,000,000 EUR	—	905,000,000 EUR	- EUR	169,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	- EUR	- EUR	—	320,000,000 EUR	320,000,000 EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	- EUR	- EUR	—	320,000,000 EUR	—	—	220,000,000 EUR	- EUR	—	220,000,000 EUR	—	220,000,000 EUR	- EUR	—	- EUR	—	- EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	- EUR	- EUR	—	3,000,000 EUR	3,000,000 EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	- EUR	1,000,000 EUR	—	4,000,000 EUR	—	—	6,000,000 EUR	- EUR	—	- EUR	—	1,000,000 EUR	- EUR	—	6,000,000 EUR	—	- EUR	- EUR	1,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	- EUR	- EUR	—	10,000,000 EUR	10,000,000 EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	- EUR	- EUR	—	10,000,000 EUR	—	—	9,000,000 EUR	- EUR	—	9,000,000 EUR	—	9,000,000 EUR	- EUR	—	- EUR	—	- EUR	- EUR	- EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—