Statement Of Changes In Equity [Abstract]

Solvay SA - Filing #3206710

Concept	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	2023-01-01 to 2023-12-31	As at 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	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	2023-01-01 to 2023-12-31	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	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	2022-01-01 to 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	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	459,000,000 EUR	—	—	—	1 305 EUR	853,000,000 EUR	—	—	1 683 EUR	0 EUR	—	—	0 EUR	—	—	42,000,000 EUR	—	174,000,000 EUR	—	237,000,000 EUR	253,000,000 EUR	15,000,000 EUR	103,000,000 EUR	—	—	—	—	10 664 EUR	332,000,000 EUR	—	—	4,000,000 EUR	—	—	—	1 786 EUR	7 846 EUR	—	61,000,000 EUR	1 170 EUR	6 854 EUR	225,000,000 EUR	1 588 EUR	318,000,000 EUR	—	76,000,000 EUR	—	—	232,000,000 EUR	5 467 EUR	1 588 EUR	8 851 EUR	5 982 EUR	23,000,000 EUR	1 786 EUR	3,000,000 EUR	421,000,000 EUR	112,000,000 EUR	645,000,000 EUR	1 170 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	- EUR	2 105 EUR	- EUR	—	—	2 093 EUR	- EUR	—	—	12,000,000 EUR	- EUR	—	2 093 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	- EUR	- EUR	- EUR	1 934 EUR	—	—	1 905 EUR	29,000,000 EUR	—	- EUR	- EUR	1 905 EUR	—	—	- EUR	—	—	—	—	—	—	- EUR	—	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	- EUR	192,000,000 EUR	76,000,000 EUR	—	—	191,000,000 EUR	0 EUR	—	—	1,000,000 EUR	- EUR	—	- EUR	- EUR	—	65,000,000 EUR	—	- EUR	—	—	—	—	179,000,000 EUR	- EUR	- EUR	447,000,000 EUR	—	—	- EUR	2,000,000 EUR	—	- EUR	73,000,000 EUR	446,000,000 EUR	—	—	19,000,000 EUR	—	—	—	—	—	—	88,000,000 EUR	—	- EUR	304,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	- EUR	1 913 EUR	76,000,000 EUR	—	—	1 902 EUR	0 EUR	—	—	11,000,000 EUR	- EUR	—	2 093 EUR	- EUR	—	65,000,000 EUR	—	- EUR	—	—	—	—	179,000,000 EUR	- EUR	- EUR	2 382 EUR	—	—	1 905 EUR	30,000,000 EUR	—	- EUR	73,000,000 EUR	2 351 EUR	—	—	19,000,000 EUR	—	—	—	—	—	—	88,000,000 EUR	—	- EUR	304,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	- EUR	432,000,000 EUR	- EUR	—	—	420,000,000 EUR	- EUR	—	—	12,000,000 EUR	- EUR	—	420,000,000 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	- EUR	- EUR	- EUR	421,000,000 EUR	—	—	403,000,000 EUR	18,000,000 EUR	—	- EUR	- EUR	403,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	- EUR	—	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through other changes, equity	—	81,000,000 EUR	84,000,000 EUR	0 EUR	—	—	84,000,000 EUR	- EUR	—	—	- EUR	- EUR	—	3,000,000 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	- EUR	- EUR	- EUR	87,000,000 EUR	—	—	48,000,000 EUR	63,000,000 EUR	—	- EUR	0 EUR	24,000,000 EUR	—	—	0 EUR	—	—	—	—	—	—	1,000,000 EUR	—	- EUR	23,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	50,000,000 EUR	39,000,000 EUR	- EUR	—	—	39,000,000 EUR	- EUR	—	—	- EUR	- EUR	—	11,000,000 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	—	- EUR	- EUR	7,000,000 EUR	7,000,000 EUR	—	—	- EUR	- EUR	—	- EUR	- EUR	7,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	- EUR	—	- EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—