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Current financial debt and derivative financial instruments
 12 Months Ended
Dec. 31, 2020
Disclosure of current financial debt and derivative instruments [abstract]  
Current financial debt and derivative financial instruments
21. Current financial debt and derivative financial instruments
(USD millions)
2020
2019
Interest-bearing accounts of associates

payable on demand  1


2 085


1 836
Bank and other financial debt  2
976
719
Commercial paper
4 258
2 289
Current portion of non-current financial debt
2 272
2 002
Derivative financial instruments
194
185
Total current financial debt and derivative financial instruments
9 785
7 031
 1  Weighted average interest rate 0.4% (2019: 0.5%)
 2  Weighted average interest rate 5.0% (2019: 12.9%)
The consolidated balance sheet amounts of current financial debt, other than the current portion of non-current financial debt, approximate the estimated fair value due to the short-term nature of these instruments.
Details on commercial papers and short term borrowings are provided under “Liquidity risk” in Note 29.