Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
120,000,000
EUR
|
156,000,000
EUR
|
107,000,000
EUR
|
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets under development |
52,000,000
EUR
|
95,000,000
EUR
|
60,000,000
EUR
|
| Other intangible assets |
6,000,000
EUR
|
4,000,000
EUR
|
3,000,000
EUR
|
| Goodwill |
67,000,000
EUR
|
67,000,000
EUR
|
67,000,000
EUR
|
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
32,000,000
EUR
|
58,000,000
EUR
|
61,000,000
EUR
|
| Classes of current inventories [abstract] | |||
| Current raw materials and current production supplies [abstract] | |||
| Current raw materials and current production supplies |
54,000,000
EUR
|
88,000,000
EUR
|
79,000,000
EUR
|
| Current work in progress |
30,000,000
EUR
|
67,000,000
EUR
|
92,000,000
EUR
|
| Current inventories |
84,000,000
EUR
|
155,000,000
EUR
|
171,000,000
EUR
|
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
98,000,000
EUR
|
148,000,000
EUR
|
135,000,000
EUR
|
| Miscellaneous current assets [abstract] | |||
| Current restricted cash and cash equivalents |
48,000,000
EUR
|
44,000,000
EUR
|
143,000,000
EUR
|
| Classes of other provisions [abstract] | |||
| Restructuring provision [abstract] | |||
| Non-current restructuring provision |
0
EUR
|
0
EUR
|
15,000,000
EUR
|
| Current restructuring provision |
2,000,000
EUR
|
2,000,000
EUR
|
6,000,000
EUR
|
| Other provisions [abstract] | |||
| Other current provisions |
60,000,000
EUR
|
99,000,000
EUR
|
82,000,000
EUR
|
| Borrowings, by type [abstract] | |||
| Loans received |
40,000,000
EUR
|
40,000,000
EUR
|
0
EUR
|
| Trade and other current payables [abstract] | |||
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current contract liabilities [abstract] | |||
| Current advances received, representing current contract liabilities for performance obligations satisfied at point in time |
27,000,000
EUR
|
26,000,000
EUR
|
10,000,000
EUR
|
| Current contract liabilities |
214,000,000
EUR
|
40,000,000
EUR
|
107,000,000
EUR
|
| Other current payables |
64,000,000
EUR
|
91,000,000
EUR
|
113,000,000
EUR
|
| Trade and other payables [abstract] | |||
| Trade payables |
65,000,000
EUR
|
83,000,000
EUR
|
185,000,000
EUR
|
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current debt instruments issued |
0
EUR
|
120,000,000
EUR
|
120,000,000
EUR
|
| Miscellaneous current liabilities [abstract] | |||
| Current debt instruments issued |
127,000,000
EUR
|
8,000,000
EUR
|
9,000,000
EUR
|
| Issued capital [abstract] | |||
| Issued capital |
89,000,000
EUR
|
89,000,000
EUR
|
89,000,000
EUR
|
| Retained earnings [abstract] | |||
| Retained earnings |
510,000,000
EUR
|
148,000,000
EUR
|
41,000,000
EUR
|
| Miscellaneous equity [abstract] | |||
| Capital reserve |
198,000,000
EUR
|
198,000,000
EUR
|
198,000,000
EUR
|
| Net assets (liabilities) [abstract] | |||
| Assets |
585,000,000
EUR
|
913,000,000
EUR
|
1,096,000,000
EUR
|
| Liabilities |
858,000,000
EUR
|
811,000,000
EUR
|
873,000,000
EUR
|
| Net current assets (liabilities) [abstract] | |||
| Current assets |
338,000,000
EUR
|
591,000,000
EUR
|
859,000,000
EUR
|
| Current liabilities |
628,000,000
EUR
|
422,000,000
EUR
|
528,000,000
EUR
|
| Assets less current liabilities [abstract] |