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TRADE ACCOUNTS RECEIVABLE - Content Trade Accounts Receivable (Detail) - USD ($)
$ in Millions
Sep. 30, 2025
Sep. 30, 2024
Receivables [Abstract]    
Trade accounts receivable—gross $ 1,642 $ 1,413
Allowance for uncollectible accounts (25) (32)
Trade accounts receivable—Net $ 1,617 $ 1,381