v3.25.2
Debt Instruments - Long -Term Debt (Details) - USD ($)
 3 Months Ended 6 Months Ended
Feb. 15, 2025
Aug. 15, 2024
Feb. 15, 2024
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Line of Credit Facility [Line Items]                
Payment-in-kind interest expense           $ 146,000,000 $ 285,000,000  
Assets       $ 9,366,000,000   9,366,000,000   $ 8,484,000,000
Long-term debt, current maturities       312,000,000   312,000,000   302,000,000
Variable Interest Entity, Not Primary Beneficiary                
Line of Credit Facility [Line Items]                
Outstanding principal, net of debt issuance costs       353,000,000   353,000,000   351,000,000
Long-term debt, current maturities       141,000,000   141,000,000   136,000,000
Variable Interest Entity, Not Primary Beneficiary | Asset Pledged as Collateral                
Line of Credit Facility [Line Items]                
Assets       357,000,000   357,000,000   354,000,000
Leased Properties and Construction Improvements                
Line of Credit Facility [Line Items]                
Sale leaseback liability, net, included in long-term debt       482,000,000   $ 482,000,000   482,000,000
Minimum | Leased Properties and Construction Improvements                
Line of Credit Facility [Line Items]                
Sale leaseback transaction, expiration period           20 years    
Maximum | Leased Properties and Construction Improvements                
Line of Credit Facility [Line Items]                
Sale leaseback transaction, expiration period           25 years    
Sale leaseback transaction, renewal period (up to)           25 years    
Senior Notes                
Line of Credit Facility [Line Items]                
Debt instrument, repurchased during period       0        
Outstanding principal, net of debt issuance costs       4,439,000,000   $ 4,439,000,000   4,345,000,000
Long-term debt, current maturities       $ 98,000,000   $ 98,000,000   $ 98,000,000
Notes due December 1, 2028 (the "2028 Senior Secured Notes") | Senior Notes                
Line of Credit Facility [Line Items]                
Payment-in-kind interest expense $ 28,000,000 $ 47,000,000 $ 53,000,000          
Notes due June 1, 2030 (the "2030 Senior Secured Notes") | Senior Notes                
Line of Credit Facility [Line Items]                
Payment-in-kind interest expense 91,000,000 101,000,000 88,000,000          
Notes due June 1, 2031 (the "2031 Senior Secured Notes") | Senior Notes                
Line of Credit Facility [Line Items]                
Payment-in-kind interest expense $ 139,000,000 $ 130,000,000 $ 111,000,000          
Senior Secured Notes | Senior Notes                
Line of Credit Facility [Line Items]                
Percent of principal amount outstanding       100.00%   100.00%    
Debt instrument, redemption price, percentage of principal amount redeemed           35.00%    
Debt instrument, redemption price, percentage           109.00%    
Percent of principal amount outstanding, change control events       101.00%   101.00%    
2028 Senior Secured Notes | Senior Notes                
Line of Credit Facility [Line Items]                
Payment-in-kind interest expense         $ 7,000,000 $ 1,000,000 7,000,000  
Debt instrument, repurchased during period         250,000,000 52,000,000 250,000,000  
Repayments of senior debt         259,000,000 55,000,000 259,000,000  
Gain (loss) on debt extinguishment         (2,000,000) (2,000,000) (2,000,000)  
Transaction fees, write offs and unamortized premium (less than for the three months ended 6/30/2025)         $ 1,000,000 $ 1,000,000 $ 1,000,000  
Senior Unsecured Notes | Senior Notes | Debt Instrument, Redemption, Period One                
Line of Credit Facility [Line Items]                
Debt instrument, redemption price, percentage of principal amount redeemed           35.00%    
Debt instrument, redemption price, percentage           100.00%    
Notes due May 1, 2030 ("2030 Senior Unsecured Notes") | Senior Notes | Debt Instrument, Redemption, Period One                
Line of Credit Facility [Line Items]                
Debt instrument, redemption price, percentage of principal amount redeemed           10.00%    
Debt instrument, redemption price, percentage           105.125%