Statement Of Changes In Equity [Abstract]

Alstom - Filing #2816097

Concept	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	2021-04-01 to 2022-03-31	As at 2022-03-31	As at 2022-03-31	2021-04-01 to 2022-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	—	—	—	—	—	8 911 EUR	1 236 EUR	160,000,000 EUR	3,000,000 EUR	2 614 EUR	450,000,000 EUR	5 354 EUR	—	9 024 EUR	113,000,000 EUR	—	11,000,000 EUR	173,000,000 EUR	- EUR	- EUR	11,000,000 EUR	9 117 EUR	2 598 EUR	5 315 EUR	1 907 EUR	3,000,000 EUR	78,000,000 EUR	9 039 EUR	611,000,000 EUR	- EUR	—	—	—	—	—	—	—	- EUR	- EUR	11,000,000 EUR	- EUR	—	—	57,000,000 EUR	3 271 EUR	1 581 EUR	3 328 EUR	622,000,000 EUR	275,000,000 EUR	980,000,000 EUR	1 610 EUR	3,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	581,000,000 EUR	- EUR	21,000,000 EUR	- EUR	- EUR	- EUR	581,000,000 EUR	—	—	—	—	—	—	—	560,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- EUR	259,000,000 EUR	- EUR	- EUR	- EUR	- EUR	247,000,000 EUR	—	—	—	—	12,000,000 EUR	247,000,000 EUR	—	—	—	—	—	—	—	—	—
Other comprehensive income	485,000,000 EUR	- EUR	7,000,000 EUR	164,000,000 EUR	- EUR	6,000,000 EUR	6,000,000 EUR	—	—	—	—	—	—	—	492,000,000 EUR	—	—	333,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	11,000,000 EUR	114,000,000 EUR	102,000,000 EUR	- EUR	- EUR	6,000,000 EUR	6,000,000 EUR	—	—	—	—	1,000,000 EUR	113,000,000 EUR	—	—	—	—	—	—	—	—	—
Comprehensive income	96,000,000 EUR	- EUR	28,000,000 EUR	164,000,000 EUR	- EUR	6,000,000 EUR	587,000,000 EUR	—	—	—	—	—	—	—	68,000,000 EUR	—	—	333,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	11,000,000 EUR	373,000,000 EUR	102,000,000 EUR	- EUR	- EUR	6,000,000 EUR	241,000,000 EUR	—	—	—	—	13,000,000 EUR	360,000,000 EUR	—	—	—	—	—	—	—	—	—
Issue of equity	48,000,000 EUR	38,000,000 EUR	- EUR	- EUR	10,000,000 EUR	- EUR	- EUR	—	—	—	—	—	—	—	48,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- EUR	5 109 EUR	- EUR	1 011 EUR	4 046 EUR	- EUR	52,000,000 EUR	—	—	—	—	- EUR	5 109 EUR	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	45,000,000 EUR	- EUR	7,000,000 EUR	- EUR	- EUR	- EUR	45,000,000 EUR	—	—	—	—	—	—	—	52,000,000 EUR	—	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- EUR	6,000,000 EUR	- EUR	- EUR	- EUR	- EUR	- EUR	—	—	—	—	6,000,000 EUR	- EUR	—	—	—	—	—	—	—	—	—