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Hedging Activities and Fair Value Measurements - Narrative (Details)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2025
USD ($)
derivativeInstrument
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Derivative [Line Items]            
Cash proceeds from hedge       $ 14 $ (29)  
Carrying amount of hedged asset   $ 7   7   $ 11
Carrying Value            
Derivative [Line Items]            
Fixed rate debt principal amount fair value   32,500   32,500   31,600
Significant Other Observable Inputs (Level 2) | Fair Value            
Derivative [Line Items]            
Fixed rate debt principal amount fair value   30,200   30,200   $ 28,900
Derivatives not designated as hedging instruments:            
Derivative [Line Items]            
Gain (Loss) Recognized in Income on Derivative   71 $ (5) $ 48 $ 7  
Treasury lock | Cash flow hedge | Derivatives designated as hedging instruments:            
Derivative [Line Items]            
Number of transactions | derivativeInstrument 4          
Derivative, fixed interest rate 3.98%          
Derivative, notional amount $ 750          
Cash proceeds from hedge $ 14          
Derivative, gains, amortization period       7 years    
Interest Rate Derivative Instruments | Cash flow hedge            
Derivative [Line Items]            
Accumulated other comprehensive income related to interest rate derivative instruments expected to be reclassified to earnings in interest expense over the next twelve months   8   $ 8    
Commodity Derivative Instruments | Derivatives not designated as hedging instruments:            
Derivative [Line Items]            
Realized gain (loss) on commodity contracts       35    
Unrealized gain (loss) on commodity contracts       13    
Commodity Derivative Instruments | Cash flow hedge            
Derivative [Line Items]            
Net accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to earnings over the next twelve months   83   83    
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to revenue over the next twelve months   80   80    
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to operating costs and expenses over the next twelve months   3   3    
Commodity Derivative Before CME Rule 814 | Fair Value, Recurring            
Derivative [Line Items]            
Price risk derivatives, at fair value, net   $ 69   $ 69