XML 513 R84.htm IDEA: XBRL DOCUMENT v3.20.4
OTHER GAINS AND LOSSES—NET (Details) - EUR (€)
€ in Millions
 1 Months Ended 12 Months Ended
Jul. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Analysis of income and expense [abstract]        
Realized (losses) / gains on derivatives   € (35) € (49) € 14
Losses reclassified from OCI as a result of hedge accounting discontinuation   (6) 0 0
Unrealized gains / (losses) on derivatives at fair value through profit and loss—net   16 33 (84)
Unrealized exchange gains from the remeasurement of monetary assets and liabilities - net   1 0 0
Impairment of assets   (43) 0 0
Restructuring costs   (13) (4) (1)
(Losses) / gains on pension plan amendments   (2) 1 36
(Losses) / gains on disposals   (4) (3) 186
Other   (3) (1) 2
Other gains and losses - net   (89) (23) 153
Analysis of income and expense [line items]        
Impairment of assets   (43) € 0 0
COVID-19        
Analysis of income and expense [abstract]        
Losses reclassified from OCI as a result of hedge accounting discontinuation   (6)    
A&T and AC&I | COVID-19        
Analysis of income and expense [abstract]        
Impairment of assets   (43)    
Analysis of income and expense [line items]        
Impairment of assets   € (43)    
Novelis        
Analysis of income and expense [line items]        
Sale of assets € 200      
Net gain on sale of assets       € 190