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Trade and Other Receivables - Activity in Allowance of Doubtful Accounts (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Provision for credit losses related to uncollectible receivables $ 102 $ 42 $ 189 $ 96
Unbilled revenues and trade receivables        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of the period 16 15 16 13
Provision for credit losses related to uncollectible receivables 7 1 21 9
Write-offs (6) 0 (20) (6)
Balance, end of the period $ 17 $ 16 $ 17 $ 16