Quarterly report [Sections 13 or 15(d)]

Derivative Instruments - Fair Value Inputs - Quantitative Information (Details)

v3.26.1
Derivative Instruments - Fair Value Inputs - Quantitative Information (Details) - USD ($)
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net Fair Value Liability [1] $ (112,000,000) $ (523,000,000)
Fair Value, Inputs, Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net Fair Value Liability [1] (106,000,000) $ (500,000,000)
Valuation, Market Approach | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant Unobservable Input Range [2] (0.670)  
Valuation, Market Approach | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant Unobservable Input Range [2] 0.195  
Valuation, Market Approach | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant Unobservable Input Range [2] $ (0.042)  
[1] As described in Note 1—Nature of Operations and Basis of Presentation, in June 2026, we designated the NPNS scope exception for our IPM agreements, which resulted in these agreements being no longer accounted for as derivative instruments as of the designation date. The fair value of such agreements was a liability of $394 million as of December 31, 2025.
[2] Unobservable inputs were weighted by the relative fair value of the instruments.