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Derivative Assets And Liabilities Table - Outstanding Commodity-Related Derivatives (Details) | Mar. 31, 2021 barrels Megawatt MMbtu bbl | Dec. 31, 2020 MMbtu Megawatt bbl barrels
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Natural Gas Liquids [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount | bbl |  | (2,759) | (5,840)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (25,610) | (29,173)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Swing Swaps IFERC [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (13,573) |
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Swing Swaps IFERC [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  |  | (11,208)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Fixed Swaps/Futures [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (18,425) | (53,575)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forward Physical Contracts [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (15,338) | (11,861)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount | [1] |  | (44,225)
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | [1] | (21,125) |
Natural Gas [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Fixed Swaps/Futures [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (1,493) | (1,603)
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Basis Swaps IFERC/NYMEX [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (14,068) | (30,113)
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Fixed Swaps/Futures [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (14,068) | (30,113)
Natural Gas [Member] | Fair Value Hedging [Member] | Non Trading [Member] | Hedged Item - Inventory (MMBtu) [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount |  | (14,068) | (30,113)
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Options - Puts [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  | (174,398) |
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Call Option [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  | (202,034) |
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Call Option [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  |  | (2,343,293)
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Forwards Swaps [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  | (408,800) | (1,392,400)
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Future [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  | (32,918) |
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Future [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  |  | (18,706)
Power [Member] | Mark-To-Market Derivatives [Member] | Trading [Member] | Put Option [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | Megawatt |  |  | (519,071)
Crude Oil [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount | bbl |  | (3,592) |
Crude Oil [Member] | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Forwards Swaps [Member] | Long [Member] |  |  |
Derivative, Nonmonetary Notional Amount | bbl |  |  | 0
Refined product sales | Mark-To-Market Derivatives [Member] | Non Trading [Member] | Future [Member] | Short [Member] |  |  |
Derivative, Nonmonetary Notional Amount | barrels |  | (1,724) | (2,765)
[1] | Includes aggregate amounts for open positions related to Houston Ship Channel, Waha Hub, NGPL TexOk, West Louisiana Zone and Henry Hub locations.

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