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Derivative Assets And Liabilities Table - Outstanding Commodity-Related Derivatives (Details)
Sep. 30, 2023
barrels
MMbtu
Megawatt
bbl
Dec. 31, 2022
MMbtu
Megawatt
bbl
barrels
Natural Gas Liquids [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | bbl (14,238)  
Natural Gas Liquids [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | bbl   (6,934)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount (48,393) (42,440)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Swing Swaps IFERC [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount (72,220) (202,815)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Fixed Swaps/Futures [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount (4,803) (15,758)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forward Physical Contracts [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount (2,145)  
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forward Physical Contracts [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount   (2,423)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount [1] (44,800) (39,563)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Fixed Swaps/Futures [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount (330) (145)
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount (43,745) (37,448)
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Fixed Swaps/Futures [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount (43,745) (37,448)
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Hedged Item - Inventory (MMBtu) [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount (43,745) (37,448)
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Options - Puts [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt (68,800)  
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Call Option [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt 0 0
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Forwards Swaps [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt (171,600) 0
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Future [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt (74,391) (21,384)
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Put Option [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt   (119,200)
Crude Oil [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | bbl (7,660)  
Crude Oil [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | bbl   (795)
Refined product sales | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Future [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | barrels (5,751) (3,547)
[1] Includes aggregate amounts for open positions related to Houston Ship Channel, Waha Hub, NGPL TexOk, West Louisiana Zone and Henry Hub locations.