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Accounts Receivable, Net
9 Months Ended
Sep. 30, 2025
Receivables [Abstract]  
Accounts Receivable, Net Accounts Receivable, Net
 
Accounts receivable, net consists of freight and other receivables, reduced by an allowance for credit losses which is based upon expected collectability. As of September 30, 2025 and December 31, 2024, $20 million and $40 million, respectively, of such allowances had been recorded.