Statement Of Changes In Equity [Abstract]

Air France-KLM - Filing #2816887

Concept	As at 2021-12-31	2021-01-01 to 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	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	2021-01-01 to 2021-12-31	As at 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	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	As at 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	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	12,542,000,000 EUR	—	25,000,000 EUR	—	—	—	3,816,000,000 EUR	—	3,824,000,000 EUR	4,949,000,000 EUR	—	8,000,000 EUR	643,000,000 EUR	—	3,151,000,000 EUR	—	—	9,000,000 EUR	—	429,000,000 EUR	5,351,000,000 EUR	- EUR	25,000,000 EUR	4,139,000,000 EUR	—	5,342,000,000 EUR	—	—	—	9,894,000,000 EUR	—	—	15,000,000 EUR	2,299,000,000 EUR	2,284,000,000 EUR	429,000,000 EUR	15,000,000 EUR	2,382,000,000 EUR	403,000,000 EUR	2,397,000,000 EUR	4,139,000,000 EUR	403,000,000 EUR	67,000,000 EUR	4,139,000,000 EUR	67,000,000 EUR	429,000,000 EUR	2,522,000,000 EUR	2,620,000,000 EUR	98,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	2,000,000 EUR	—	3,292,000,000 EUR	- EUR	3,292,000,000 EUR	—	- EUR	—	—	- EUR	—	—	- EUR	—	3 294 EUR	7 105 EUR	—	- EUR	—	—	—	—	—	- EUR	—	5,000,000 EUR	- EUR	7,100,000,000 EUR	—	7,100,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	2,000,000 EUR	—	797,000,000 EUR	- EUR	797,000,000 EUR	—	- EUR	—	—	- EUR	—	—	- EUR	—	799,000,000 EUR	215,000,000 EUR	—	- EUR	—	—	—	—	—	- EUR	—	1,000,000 EUR	- EUR	214,000,000 EUR	—	214,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	- EUR	—	2,495,000,000 EUR	- EUR	2,495,000,000 EUR	—	- EUR	—	—	- EUR	—	—	- EUR	—	2,495,000,000 EUR	7,320,000,000 EUR	—	- EUR	—	—	—	—	—	- EUR	—	6,000,000 EUR	- EUR	7,314,000,000 EUR	—	7,314,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Issue of equity	—	- EUR	—	- EUR	- EUR	1,024,000,000 EUR	—	810,000,000 EUR	—	—	214,000,000 EUR	—	—	- EUR	—	1,024,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through other changes, equity	—	- EUR	—	1,000,000 EUR	- EUR	1,000,000 EUR	—	- EUR	—	—	- EUR	—	—	- EUR	—	1,000,000 EUR	1,000,000 EUR	—	42,000,000 EUR	—	—	—	—	—	- EUR	—	- EUR	- EUR	1,000,000 EUR	—	41,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	1,000,000 EUR	—	- EUR	—	- EUR	—	—	—	—	—	—	—	—	—	1,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—