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Capital structure and financing - C.3.4. Guarantees and pledged assets (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Contingent liability for guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities $ 501 $ 300
Supplier Guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities 2 82
1 year | Contingent liability for guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities 13 71
1 year | Supplier Guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities 2 82
Later than one year and not later than three years | Contingent liability for guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities 70 6
Later than one year and not later than three years | Supplier Guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities 0 0
Later than three years and not later than five years | Contingent liability for guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities 418 223
Later than three years and not later than five years | Supplier Guarantees    
Disclosure of contingent liabilities [line items]    
Estimated financial effect of contingent liabilities $ 0 $ 0