v3.25.2
Fair Value Measurements Table - Fair Value of Financial Assets and Liabilities (Details) - Fair Value, Recurring [Member] - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Price Risk Derivative Assets, at Fair Value $ 345 $ 263
Other Assets, Fair Value Disclosure 210 212
Assets, Fair Value Disclosure 555 475
Price Risk Derivative Liabilities, at Fair Value (266) (293)
Financial and Nonfinancial Liabilities, Fair Value Disclosure (266) (293)
Level 1    
Price Risk Derivative Assets, at Fair Value 300 263
Other Assets, Fair Value Disclosure 210 212
Assets, Fair Value Disclosure 510 475
Price Risk Derivative Liabilities, at Fair Value (222) (293)
Financial and Nonfinancial Liabilities, Fair Value Disclosure (222) (293)
Level 2    
Price Risk Derivative Assets, at Fair Value 45 0
Other Assets, Fair Value Disclosure 0 0
Assets, Fair Value Disclosure 45 0
Price Risk Derivative Liabilities, at Fair Value (44) 0
Financial and Nonfinancial Liabilities, Fair Value Disclosure (44) 0
Fair Value, Inputs, Level 3    
Price Risk Derivative Assets, at Fair Value 0 0
Other Assets, Fair Value Disclosure 0 0
Assets, Fair Value Disclosure 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Financial and Nonfinancial Liabilities, Fair Value Disclosure 0 0
Commodity Derivatives - Natural Gas [Member] | Basis Swaps IFERC/NYMEX [Member]    
Price Risk Derivative Assets, at Fair Value 12 6
Price Risk Derivative Liabilities, at Fair Value (23) (11)
Commodity Derivatives - Natural Gas [Member] | Swing Swaps IFERC [Member]    
Price Risk Derivative Assets, at Fair Value 2 4
Price Risk Derivative Liabilities, at Fair Value (3) (11)
Commodity Derivatives - Natural Gas [Member] | Fixed Swaps/Futures [Member]    
Price Risk Derivative Assets, at Fair Value 29 10
Price Risk Derivative Liabilities, at Fair Value (9) (9)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Basis Swaps IFERC/NYMEX [Member]    
Price Risk Derivative Assets, at Fair Value 12 6
Price Risk Derivative Liabilities, at Fair Value (23) (11)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Swing Swaps IFERC [Member]    
Price Risk Derivative Assets, at Fair Value 2 4
Price Risk Derivative Liabilities, at Fair Value (3) (11)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Fixed Swaps/Futures [Member]    
Price Risk Derivative Assets, at Fair Value 29 10
Price Risk Derivative Liabilities, at Fair Value (9) (9)
Commodity Derivatives - Natural Gas [Member] | Level 2 | Basis Swaps IFERC/NYMEX [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Natural Gas [Member] | Level 2 | Swing Swaps IFERC [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Natural Gas [Member] | Level 2 | Fixed Swaps/Futures [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Natural Gas [Member] | Fair Value, Inputs, Level 3 | Basis Swaps IFERC/NYMEX [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Natural Gas [Member] | Fair Value, Inputs, Level 3 | Swing Swaps IFERC [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Natural Gas [Member] | Fair Value, Inputs, Level 3 | Fixed Swaps/Futures [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Refined Products [Member] | Future [Member]    
Price Risk Derivative Assets, at Fair Value 15 3
Price Risk Derivative Liabilities, at Fair Value (7) (9)
Commodity Derivatives - Refined Products [Member] | Level 1 | Future [Member]    
Price Risk Derivative Assets, at Fair Value 15 3
Price Risk Derivative Liabilities, at Fair Value (7) (9)
Commodity Derivatives - Refined Products [Member] | Level 2 | Future [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Refined Products [Member] | Fair Value, Inputs, Level 3 | Future [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Crude [Member] | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 59 25
Price Risk Derivative Liabilities, at Fair Value (44) (35)
Commodity Derivatives - Crude [Member] | Level 1 | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 59 25
Price Risk Derivative Liabilities, at Fair Value (44) (35)
Commodity Derivatives - Crude [Member] | Level 2 | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Crude [Member] | Fair Value, Inputs, Level 3 | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Power [Member] | Future [Member]    
Price Risk Derivative Assets, at Fair Value 19 10
Price Risk Derivative Liabilities, at Fair Value (21) (10)
Commodity Derivatives - Power [Member] | Forward Contracts    
Price Risk Derivative Assets, at Fair Value 37 39
Price Risk Derivative Liabilities, at Fair Value (36) (38)
Commodity Derivatives - Power [Member] | Call Option [Member]    
Price Risk Derivative Assets, at Fair Value 3  
Price Risk Derivative Liabilities, at Fair Value (3)  
Commodity Derivatives - Power [Member] | Level 1 | Future [Member]    
Price Risk Derivative Assets, at Fair Value 19 10
Price Risk Derivative Liabilities, at Fair Value (21) (10)
Commodity Derivatives - Power [Member] | Level 1 | Forward Contracts    
Price Risk Derivative Assets, at Fair Value 0 39
Price Risk Derivative Liabilities, at Fair Value 0 (38)
Commodity Derivatives - Power [Member] | Level 1 | Call Option [Member]    
Price Risk Derivative Assets, at Fair Value 3  
Price Risk Derivative Liabilities, at Fair Value (3)  
Commodity Derivatives - Power [Member] | Level 2 | Future [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Power [Member] | Level 2 | Forward Contracts    
Price Risk Derivative Assets, at Fair Value 37 0
Price Risk Derivative Liabilities, at Fair Value (36) 0
Commodity Derivatives - Power [Member] | Level 2 | Call Option [Member]    
Price Risk Derivative Assets, at Fair Value 0  
Price Risk Derivative Liabilities, at Fair Value 0  
Commodity Derivatives - Power [Member] | Fair Value, Inputs, Level 3 | Future [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Power [Member] | Fair Value, Inputs, Level 3 | Forward Contracts    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value 0 0
Commodity Derivatives - Power [Member] | Fair Value, Inputs, Level 3 | Call Option [Member]    
Price Risk Derivative Assets, at Fair Value 0  
Price Risk Derivative Liabilities, at Fair Value 0  
Commodity Derivatives - NGLs [Member] | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 169 166
Price Risk Derivative Liabilities, at Fair Value (120) (170)
Commodity Derivatives - NGLs [Member] | Level 1 | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 161 166
Price Risk Derivative Liabilities, at Fair Value (112) (170)
Commodity Derivatives - NGLs [Member] | Level 2 | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 8 0
Price Risk Derivative Liabilities, at Fair Value (8) 0
Commodity Derivatives - NGLs [Member] | Fair Value, Inputs, Level 3 | Forward Swaps [Member]    
Price Risk Derivative Assets, at Fair Value 0 0
Price Risk Derivative Liabilities, at Fair Value $ 0 $ 0