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Other assets and liabilities F.5. Assets and liabilities related to contract with customers (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Contract Assets [Line Items]    
Contract assets, net $ 77 $ 82
Contract liabilities [abstract]    
Short-term portion 121 156
Revenue that was included in contract liability balance at beginning of period 131 84
Transaction price allocated to remaining performance obligations 90  
Contract Costs, Net [Roll Forward]    
Contract costs, net, beginning of period 12 12
Contract costs capitalized 5 5
Amortization of contract costs (5) (4)
Contract costs, net, end of period 12 10
Long-term portion    
Contract Assets [Line Items]    
Contract assets, net 21 21
Short-term portion    
Contract Assets [Line Items]    
Contract assets, net 59 65
Less: provisions for expected credit losses    
Contract Assets [Line Items]    
Contract assets, net (3) (4)
Current contract liabilities    
Contract liabilities [abstract]    
Long-term portion 0 74
Short-term portion 121 82
Total 121 $ 156
1 year    
Contract liabilities [abstract]    
Transaction price allocated to remaining performance obligations 89  
Later than 1 year    
Contract liabilities [abstract]    
Transaction price allocated to remaining performance obligations $ 2