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Fair Value Measurements Table - Fair Value of Financial Assets and Liabilities (Details) - Fair Value, Recurring [Member] - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Price Risk Derivative Assets, at Fair Value | $ 361 | $ 688
Other Assets, Fair Value Disclosure | 28 | 27
Assets, Fair Value Disclosure | 389 | 715
Interest Rate Derivative Liabilities, at Fair Value | (43) | (23)
Price Risk Derivative Liabilities, at Fair Value | (309) | (526)
Financial and Nonfinancial Liabilities, Fair Value Disclosure | (352) | (549)
Level 1 |  |
Price Risk Derivative Assets, at Fair Value | 310 | 626
Other Assets, Fair Value Disclosure | 18 | 18
Assets, Fair Value Disclosure | 328 | 644
Interest Rate Derivative Liabilities, at Fair Value | 0 | 0
Price Risk Derivative Liabilities, at Fair Value | (263) | (473)
Financial and Nonfinancial Liabilities, Fair Value Disclosure | (263) | (473)
Level 2 |  |
Price Risk Derivative Assets, at Fair Value | 51 | 62
Other Assets, Fair Value Disclosure | 10 | 9
Assets, Fair Value Disclosure | 61 | 71
Interest Rate Derivative Liabilities, at Fair Value | (43) | (23)
Price Risk Derivative Liabilities, at Fair Value | (46) | (53)
Financial and Nonfinancial Liabilities, Fair Value Disclosure | (89) | (76)
Commodity Derivatives - Natural Gas [Member] | Basis Swaps IFERC/NYMEX [Member] |  |
Price Risk Derivative Assets, at Fair Value | 3 | 60
Price Risk Derivative Liabilities, at Fair Value | (11) | (25)
Commodity Derivatives - Natural Gas [Member] | Swing Swaps IFERC [Member] |  |
Price Risk Derivative Assets, at Fair Value | 4 | 75
Price Risk Derivative Liabilities, at Fair Value | (2) | (12)
Commodity Derivatives - Natural Gas [Member] | Fixed Swaps/Futures [Member] |  |
Price Risk Derivative Assets, at Fair Value | 31 | 113
Price Risk Derivative Liabilities, at Fair Value | (2) | (4)
Commodity Derivatives - Natural Gas [Member] | Forward Physical Contracts [Member] |  |
Price Risk Derivative Assets, at Fair Value | 6 | 10
Price Risk Derivative Liabilities, at Fair Value | (1) | (2)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Basis Swaps IFERC/NYMEX [Member] |  |
Price Risk Derivative Assets, at Fair Value | 3 | 60
Price Risk Derivative Liabilities, at Fair Value | (11) | (25)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Swing Swaps IFERC [Member] |  |
Price Risk Derivative Assets, at Fair Value | 4 | 75
Price Risk Derivative Liabilities, at Fair Value | (2) | (12)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Fixed Swaps/Futures [Member] |  |
Price Risk Derivative Assets, at Fair Value | 31 | 113
Price Risk Derivative Liabilities, at Fair Value | (2) | (4)
Commodity Derivatives - Natural Gas [Member] | Level 1 | Forward Physical Contracts [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 | 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] | Level 2 | Forward Physical Contracts [Member] |  |
Price Risk Derivative Assets, at Fair Value | 6 | 10
Price Risk Derivative Liabilities, at Fair Value | (1) | (2)
Commodity Derivatives - Refined Products [Member] | Future [Member] |  |
Price Risk Derivative Assets, at Fair Value | 1 | 20
Price Risk Derivative Liabilities, at Fair Value | (16) | (59)
Commodity Derivatives - Refined Products [Member] | Level 1 | Future [Member] |  |
Price Risk Derivative Assets, at Fair Value | 1 | 20
Price Risk Derivative Liabilities, at Fair Value | (16) | (59)
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 - Crude [Member] | Forward Swaps [Member] |  |
Price Risk Derivative Assets, at Fair Value | 41 | 38
Price Risk Derivative Liabilities, at Fair Value | (19) | (12)
Commodity Derivatives - Crude [Member] | Level 1 | Forward Swaps [Member] |  |
Price Risk Derivative Assets, at Fair Value | 41 | 38
Price Risk Derivative Liabilities, at Fair Value | (19) | (12)
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 - Power [Member] | Call Option [Member] |  |
Price Risk Derivative Assets, at Fair Value | 2 |
Price Risk Derivative Liabilities, at Fair Value | (1) |
Commodity Derivatives - Power [Member] | Future [Member] |  |
Price Risk Derivative Assets, at Fair Value | 9 | 3
Price Risk Derivative Liabilities, at Fair Value | (7) | (3)
Commodity Derivatives - Power [Member] | Forward Contracts |  |
Price Risk Derivative Assets, at Fair Value | 45 | 52
Price Risk Derivative Liabilities, at Fair Value | (45) | (51)
Commodity Derivatives - Power [Member] | Level 1 | Call Option [Member] |  |
Price Risk Derivative Assets, at Fair Value | 2 |
Price Risk Derivative Liabilities, at Fair Value | (1) |
Commodity Derivatives - Power [Member] | Level 1 | Future [Member] |  |
Price Risk Derivative Assets, at Fair Value | 9 | 3
Price Risk Derivative Liabilities, at Fair Value | (7) | (3)
Commodity Derivatives - Power [Member] | Level 1 | Forward Contracts |  |
Price Risk Derivative Assets, at Fair Value | 0 | 0
Price Risk Derivative Liabilities, at Fair Value | 0 | 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] | 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 | 45 | 52
Price Risk Derivative Liabilities, at Fair Value | (45) | (51)
Commodity Derivatives - NGLs [Member] | Forward Swaps [Member] |  |
Price Risk Derivative Assets, at Fair Value | 219 | 317
Price Risk Derivative Liabilities, at Fair Value | (205) | (358)
Commodity Derivatives - NGLs [Member] | Level 1 | Forward Swaps [Member] |  |
Price Risk Derivative Assets, at Fair Value | 219 | 317
Price Risk Derivative Liabilities, at Fair Value | (205) | (358)
Commodity Derivatives - NGLs [Member] | Level 2 | Forward Swaps [Member] |  |
Price Risk Derivative Assets, at Fair Value | 0 | 0
Price Risk Derivative Liabilities, at Fair Value | $ 0 | $ 0

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