Statement Of Changes In Equity [Abstract]

Compagnie de Saint-Gobain - Filing #2811214

Concept	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	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	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	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	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	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	23 758 EUR	18,000,000 EUR	—	—	—	3 621 EUR	19 789 EUR	—	—	485,000,000 EUR	—	—	2 026 EUR	1 726 EUR	419,000,000 EUR	23 273 EUR	23 154 EUR	—	—	1,000,000 EUR	—	4 129 EUR	—	—	—	—	443,000,000 EUR	18 457 EUR	323,000,000 EUR	2 063 EUR	1 614 EUR	22 711 EUR	—	—	204,000,000 EUR	16 244 EUR	4 544 EUR	16,000,000 EUR	21 126 EUR	20 715 EUR	411,000,000 EUR	1 949 EUR	2 096 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	EUR	2 756 EUR	—	—	2 669 EUR	EUR	EUR	—	—	87,000,000 EUR	2 669 EUR	—	EUR	EUR	—	—	—	—	—	EUR	EUR	—	3 101 EUR	—	3 003 EUR	98,000,000 EUR	EUR	EUR	—	—	—	—	—	—	3 003 EUR	EUR	—	—	—	—	—	—	—	—	—
Other comprehensive income	EUR	500,000,000 EUR	—	—	524,000,000 EUR	EUR	17,000,000 EUR	—	—	24,000,000 EUR	395,000,000 EUR	—	112,000,000 EUR	EUR	—	—	—	—	—	EUR	EUR	—	311,000,000 EUR	—	26,000,000 EUR	13,000,000 EUR	EUR	15,000,000 EUR	—	—	—	—	—	—	324,000,000 EUR	335,000,000 EUR	—	—	—	—	—	—	—	—	—
Comprehensive income	EUR	2 256 EUR	—	—	2 145 EUR	EUR	17,000,000 EUR	—	—	111,000,000 EUR	2 274 EUR	—	112,000,000 EUR	EUR	—	—	—	—	—	EUR	EUR	—	3 412 EUR	—	2 977 EUR	85,000,000 EUR	EUR	15,000,000 EUR	—	—	—	—	—	—	3 327 EUR	335,000,000 EUR	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	EUR	1 088 EUR	—	—	1 013 EUR	EUR	EUR	—	—	75,000,000 EUR	1 013 EUR	—	EUR	EUR	—	—	—	—	—	EUR	EUR	—	911,000,000 EUR	—	833,000,000 EUR	78,000,000 EUR	EUR	EUR	—	—	—	—	—	—	833,000,000 EUR	EUR	—	—	—	—	—	—	—	—	—
Increase through other contributions by owners, equity	EUR	9,000,000 EUR	—	—	3,000,000 EUR	3,000,000 EUR	EUR	—	—	6,000,000 EUR	EUR	—	EUR	EUR	—	—	—	—	—	EUR	EUR	—	15,000,000 EUR	—	EUR	15,000,000 EUR	EUR	EUR	—	—	—	—	—	—	0 EUR	EUR	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	854,000,000 EUR	828,000,000 EUR	—	—	828,000,000 EUR	EUR	EUR	—	—	EUR	26,000,000 EUR	—	EUR	EUR	—	—	—	—	—	789,000,000 EUR	EUR	—	781,000,000 EUR	—	8,000,000 EUR	EUR	EUR	EUR	—	—	—	—	—	—	781,000,000 EUR	EUR	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	EUR	17,000,000 EUR	—	—	17,000,000 EUR	EUR	EUR	—	—	EUR	17,000,000 EUR	—	EUR	EUR	—	—	—	—	—	EUR	EUR	—	28,000,000 EUR	—	18,000,000 EUR	10,000,000 EUR	EUR	EUR	—	—	—	—	—	—	18,000,000 EUR	EUR	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	EUR	62,000,000 EUR	—	—	62,000,000 EUR	EUR	EUR	—	—	EUR	62,000,000 EUR	—	EUR	EUR	—	—	—	—	—	EUR	EUR	—	43,000,000 EUR	—	43,000,000 EUR	EUR	EUR	EUR	—	—	—	—	—	—	43,000,000 EUR	EUR	—	—	—	—	—	—	—	—	—