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Derivative Assets And Liabilities Table - Outstanding Commodity-Related Derivatives (Details)
Sep. 30, 2022
bbl
MMbtu
Megawatt
barrels
Dec. 31, 2021
MMbtu
Megawatt
bbl
barrels
Natural Gas Liquids [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | bbl 4,832 8,493
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount 36,443 6,738
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Swing Swaps IFERC [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount 217,515 106,333
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Fixed Swaps/Futures [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount 31,383 63,898
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forward Physical Contracts [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount 27,603 5,950
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount [1]   66,665
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount [1] 73,363  
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Fixed Swaps/Futures [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount 763 585
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount 34,183 40,533
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Fixed Swaps/Futures [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount 34,183 40,533
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Hedged Item - Inventory (MMBtu) [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount 34,183 40,533
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Options - Puts [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt 119,200  
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Call Option [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt 67,200 30,932
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Forwards Swaps [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt 455,200 653,000
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Future [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt 281,905 604,920
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Put Option [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | Megawatt   7,859
Crude Oil [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Long [Member]    
Derivative, Nonmonetary Notional Amount | bbl 3,732 3,672
Refined product sales | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Future [Member] | Short [Member]    
Derivative, Nonmonetary Notional Amount | barrels 2,604 3,349
[1] Includes aggregate amounts for open positions related to Houston Ship Channel, Waha Hub, NGPL TexOk, West Louisiana Zone and Henry Hub locations.