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Summary of Significant Accounting Policies - Changes in Allowances for Credit Losses (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Allowance for Trade Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Beginning balance $ (66) $ (45)
Net recovery/(provision) for expected credit losses 14 (24)
Write-offs charged against the allowance 3 8
Recoveries of amounts previously written off   (1)
Currency 12 (4)
Ending balance (37) (66)
Allowance for Other Current Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Beginning balance (50) (59)
Net recovery/(provision) for expected credit losses 9 4
Write-offs charged against the allowance 1 1
Recoveries of amounts previously written off   0
Currency 3 4
Ending balance (37) (50)
Allowance for Long-Term Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Beginning balance (15) (14)
Net recovery/(provision) for expected credit losses (2) 1
Write-offs charged against the allowance 5 0
Recoveries of amounts previously written off   (1)
Currency (4) (1)
Ending balance $ (16) $ (15)