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Other items from operating activities - Other non-current assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Other non-current assets      
Loans and advances $ 2,458 $ 1,982 $ 1,877
Other non-current financial assets related to operational activities 287 332 471
Other 65 101 161
TOTAL 2,810 2,415 2,509
Gross value/Cost      
Other non-current assets      
Loans and advances 2,731 2,248 2,180
Other non-current financial assets related to operational activities 287 332 471
Other 65 101 161
TOTAL 3,083 2,681 2,812
Valuation allowance/Cumulative impairments      
Other non-current assets      
Loans and advances (273) (266) (303)
TOTAL $ (273) $ (266) $ (303)