Statement Of Changes In Equity [Abstract]

ENGIE - Filing #2817315

Concept	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 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	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	199,000,000 EUR	5 238 EUR	—	—	41 980 EUR	—	1 711 EUR	3 767 EUR	—	—	—	36 994 EUR	26 058 EUR	—	2 017 EUR	2 435 EUR	4 986 EUR	—	—	—	3 874 EUR	—	3 913 EUR	4 911 EUR	1 719 EUR	—	—	2 435 EUR	28 945 EUR	—	251,000,000 EUR	2 850 EUR	31 291 EUR	—	33 856 EUR	—	—	—	—	2 435 EUR	33 087 EUR	4 950 EUR	3 913 EUR	1 961 EUR	1 098 EUR	31 470 EUR	303,000,000 EUR	38 037 EUR	1 369 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	97,000,000 EUR	—	—	EUR	3 661 EUR	—	EUR	—	—	—	—	—	—	—	EUR	—	—	—	3 758 EUR	3 661 EUR	893,000,000 EUR	—	EUR	—	—	—	EUR	EUR	—	—	1 536 EUR	—	—	—	EUR	—	EUR	644,000,000 EUR	EUR	1 536 EUR	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	40,000,000 EUR	—	—	EUR	5 753 EUR	—	EUR	—	—	—	3 431 EUR	833,000,000 EUR	—	—	EUR	—	—	—	5 713 EUR	1 490 EUR	2 990 EUR	—	EUR	—	—	—	242,000,000 EUR	EUR	—	—	999,000,000 EUR	—	—	—	EUR	—	1 752 EUR	480,000,000 EUR	EUR	2 509 EUR	—	—	—	—	—	—	—	—	—	—
Comprehensive income	56,000,000 EUR	—	—	EUR	9 415 EUR	—	EUR	—	—	- EUR	3 431 EUR	833,000,000 EUR	—	—	EUR	—	—	—	9 471 EUR	5 151 EUR	3 882 EUR	—	- EUR	—	—	—	242,000,000 EUR	- EUR	—	—	2 535 EUR	—	—	—	EUR	—	1 752 EUR	163,000,000 EUR	EUR	4 046 EUR	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	410,000,000 EUR	—	—	EUR	1 296 EUR	—	1 296 EUR	—	—	EUR	EUR	EUR	—	—	EUR	—	—	—	1 706 EUR	—	425,000,000 EUR	—	EUR	—	—	—	EUR	EUR	—	—	—	—	—	—	EUR	—	EUR	425,000,000 EUR	—	- EUR	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through other changes, equity	1,000,000 EUR	—	—	EUR	211,000,000 EUR	—	3 937 EUR	—	—	EUR	EUR	EUR	—	—	EUR	—	—	—	209,000,000 EUR	3 726 EUR	21,000,000 EUR	—	—	—	—	—	—	EUR	—	—	199,000,000 EUR	—	—	—	EUR	—	EUR	1,000,000 EUR	178,000,000 EUR	21,000,000 EUR	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	- EUR	—	—	52,000,000 EUR	- EUR	—	EUR	—	—	—	—	—	—	—	EUR	—	—	—	- EUR	52,000,000 EUR	- EUR	—	EUR	—	—	—	EUR	52,000,000 EUR	—	—	52,000,000 EUR	—	—	—	EUR	—	EUR	—	EUR	- EUR	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	1,000,000 EUR	—	—	EUR	48,000,000 EUR	—	EUR	—	—	EUR	EUR	EUR	—	—	EUR	—	—	—	49,000,000 EUR	48,000,000 EUR	54,000,000 EUR	—	EUR	—	—	—	EUR	EUR	—	—	52,000,000 EUR	—	—	—	—	—	EUR	2,000,000 EUR	—	52,000,000 EUR	—	—	—	—	—	—	—	—	—	—