Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Debt) (Details)

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Long-Term Debt (Debt) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Debt Instrument [Line Items]        
Debt Issuance Costs, Noncurrent, Net   $ (30)   $ (31)
Total debt and finance lease obligations   4,281   4,335
Debt, Current   (586)   (424)
Long-term Debt, Excluding Current Maturities   3,695   3,911
Repayments of Secured Debt   423 $ 396  
4.85% Senior Secured Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.85%   4.85%  
Debt Instrument Net of Unamortized Discounts Premium   0   423
Repayments of Secured Debt $ 177      
4.45% Senior Secured Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.45%   4.45%  
Debt Instrument Net of Unamortized Discounts Premium   $ 585   585
Repayments of Secured Debt $ 15      
4.75% Senior Secured Notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   4.75%    
Debt Instrument Net of Unamortized Discounts Premium   $ 575   575
4.375% Senior Secured Notes due 2028        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   4.375%    
Debt Instrument Net of Unamortized Discounts Premium   $ 500   500
5.45% Senior Secured Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   5.45%    
Debt Instrument Net of Unamortized Discounts Premium   $ 400   399
5.950% Senior Secured Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   5.95%    
Debt Instrument Net of Unamortized Discounts Premium   $ 300   300
6.375% Senior Secured Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   6.375%    
Debt Instrument Net of Unamortized Discounts Premium   $ 225   225
6.25% Senior Secured Notes [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage   6.25%    
Debt Instrument Net of Unamortized Discounts Premium   $ 500   500
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Debt Instrument Net of Unamortized Discounts Premium   $ 1,225   857
Revolving Credit Facility [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate   1.25%    
Revolving Credit Facility [Member] | Minimum [Member] | ABR Rate        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate   0.25%    
Finance lease obligations        
Debt Instrument [Line Items]        
Finance Lease, Liability   $ 1   $ 2