Disclosure Of Fair Value Measurement [Text Block]

Compagnie de Saint-Gobain - Filing #883081

Concept	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 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Disclosure of fair value measurement [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [abstract]
Disclosure of fair value measurement of assets [line items]
Assets	—	—	—	—	51 584 EUR	—	—	—	—	—	—	—	—	—	—	—	—	48 626 EUR	—	—	—	—	—	—	—	—	—
Reconciliation of changes in fair value measurement, assets [abstract]
Disclosure of fair value measurement of equity [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of equity [abstract]
Disclosure of fair value measurement of equity [line items]
Equity	204,000,000 EUR	16 244 EUR	16,000,000 EUR	4 544 EUR	21 126 EUR	20 715 EUR	411,000,000 EUR	1 949 EUR	2 096 EUR	13 687 EUR	311,000,000 EUR	17 892 EUR	2 131 EUR	5 104 EUR	48,000,000 EUR	125,000,000 EUR	2 857 EUR	18 203 EUR	19 416 EUR	364,000,000 EUR	1 467 EUR	19 780 EUR	743,000,000 EUR	5 551 EUR	12 518 EUR	108,000,000 EUR	2 179 EUR
Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract]