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Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]        
Cash payments related to operating lease liabilities [1] $ 427 $ 429    
Interest Paid 739 654    
Income taxes paid 13 13    
ROU assets recorded in exchange for operating lease liabilities (32) 21    
Increase (decrease) in accounts payable for purchases of property and equipment (34) 5    
Share-Based Payment Arrangement, Amount Capitalized 18 22    
Purchase of property and equipment under capital leases and installment purchases 57 45    
Cash and cash equivalents 194   $ 105  
Restricted cash and cash equivalents, current 172   171  
Restricted Cash and Cash Equivalents, Noncurrent 5   5  
Cash, Cash Equivalents, Restricted Cash and Cash Equivalents $ 371 $ 289 $ 281 $ 327
[1] Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.