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Long-Term Debt and Revolving Credit Arrangements - Revolving Credit Arrangements, Narrative (Details) - USD ($)
$ in Millions
1 Months Ended
Feb. 28, 2023
Dec. 31, 2024
Dec. 31, 2023
Jul. 28, 2023
Apr. 04, 2022
Apr. 03, 2022
Dec. 31, 2015
Debt Instrument [Line Items]              
Outstanding balance   $ 9,575          
Revolving Credit Facility | Freight Holding | Freight Holding              
Debt Instrument [Line Items]              
Outstanding balance     $ 0        
Commitment fee $ 300            
Line of Credit | Revolving Credit Facility              
Debt Instrument [Line Items]              
Borrowing capacity       $ 2,500 $ 2,200   $ 2,300
Prior minimum liquidity covenant         $ 1,000 $ 1,500  
Aggregate principal amount       $ 250      
Outstanding balance     $ 0