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Estimates (Fair Value Of Financial Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Total liabilities | $ (672) |
Level 1 [Member] |  |
Total liabilities | (470) |
Level 2 [Member] |  |
Total liabilities | (201) |
Level 3 [Member] |  |
Total liabilities | (1) |
Fair Value, Measurements, Recurring [Member] |  |
Commodity derivatives: | 363 | $ 454
Total assets | 363 | 454
Interest rate derivatives | (193) | (171)
Embedded derivatives in the ETP Preferred Units | (1) | (5)
Commodity derivatives: | (478) | (356)
Total liabilities |  | (532)
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] |  |
Commodity derivatives: | 356 | 420
Total assets | 356 | 420
Interest rate derivatives | 0 | 0
Embedded derivatives in the ETP Preferred Units | 0 | 0
Commodity derivatives: | (470) | (324)
Total liabilities |  | (324)
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] |  |
Commodity derivatives: | 7 | 34
Total assets | 7 | 34
Interest rate derivatives | (193) | (171)
Embedded derivatives in the ETP Preferred Units | 0 | 0
Commodity derivatives: | (8) | (32)
Total liabilities |  | (203)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] |  |
Commodity derivatives: | 0 | 0
Total assets | 0 | 0
Interest rate derivatives | 0 | 0
Embedded derivatives in the ETP Preferred Units | (1) | (5)
Commodity derivatives: | 0 | 0
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value |  | 5
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Put Option [Member] |  |
Commodity derivatives: |  | (1)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Options - Calls [Member] |  |
Commodity derivatives: | 1 | 1
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Options - Puts [Member] |  |
Commodity derivatives: |  | 1
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 4 | 22
Commodity derivatives: | (5) | (22)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Future [Member] |  |
Commodity derivatives: | 1 | 3
Commodity derivatives: | (1) | (2)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 1 [Member] | Put Option [Member] |  |
Commodity derivatives: |  | (1)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 1 [Member] | Options - Calls [Member] |  |
Commodity derivatives: | 1 | 1
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 1 [Member] | Options - Puts [Member] |  |
Commodity derivatives: |  | 1
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 1 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 1 [Member] | Future [Member] |  |
Commodity derivatives: | 1 | 3
Commodity derivatives: | (1) | (2)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 2 [Member] | Put Option [Member] |  |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 2 [Member] | Options - Calls [Member] |  |
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 2 [Member] | Options - Puts [Member] |  |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 2 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 4 | 22
Commodity derivatives: | (5) | (22)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 2 [Member] | Future [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 3 [Member] | Put Option [Member] |  |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 3 [Member] | Options - Calls [Member] |  |
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 3 [Member] | Options - Puts [Member] |  |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 3 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Power [Member] | Level 3 [Member] | Future [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Forward Swaps [Member] |  |
Commodity derivatives: |  | 15
Commodity derivatives: | (13) | (6)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Future [Member] |  |
Commodity derivatives: | 2 |
Commodity derivatives: | (23) |
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Level 1 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: |  | 15
Commodity derivatives: | (13) | (6)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Level 1 [Member] | Future [Member] |  |
Commodity derivatives: | 2 |
Commodity derivatives: | (23) |
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Level 2 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: |  | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Level 2 [Member] | Future [Member] |  |
Commodity derivatives: | 0 |
Commodity derivatives: | 0 |
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Level 3 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: |  | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Refined Products [Member] | Level 3 [Member] | Future [Member] |  |
Commodity derivatives: | 0 |
Commodity derivatives: | 0 |
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: |  | 9
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Future [Member] |  |
Commodity derivatives: | 9 |
Commodity derivatives: |  | (5)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Level 1 [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: |  | 9
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Level 1 [Member] | Future [Member] |  |
Commodity derivatives: | 9 |
Commodity derivatives: |  | (5)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Level 2 [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Level 2 [Member] | Future [Member] |  |
Commodity derivatives: | 0 |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Level 3 [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Crude [Member] | Level 3 [Member] | Future [Member] |  |
Commodity derivatives: | 0 |
Commodity derivatives: |  | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Basis Swaps IFERC NYMEX [Member] |  |
Commodity derivatives: | 14 | 16
Commodity derivatives: | (11) | (16)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Swing Swaps IFERC [Member] |  |
Commodity derivatives: | 2 | 10
Commodity derivatives: | (3) | (12)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: | 96 | 274
Commodity derivatives: | (149) | (203)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Forward Physical Swaps [Member] |  |
Commodity derivatives: | 1 | 4
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 1 [Member] | Basis Swaps IFERC NYMEX [Member] |  |
Commodity derivatives: | 14 | 16
Commodity derivatives: | (11) | (16)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 1 [Member] | Swing Swaps IFERC [Member] |  |
Commodity derivatives: | 0 | 2
Commodity derivatives: | 0 | (2)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 1 [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: | 96 | 274
Commodity derivatives: | (149) | (203)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 1 [Member] | Forward Physical Swaps [Member] |  |
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 2 [Member] | Basis Swaps IFERC NYMEX [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 2 [Member] | Swing Swaps IFERC [Member] |  |
Commodity derivatives: | 2 | 8
Commodity derivatives: | (3) | (10)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 2 [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 2 [Member] | Forward Physical Swaps [Member] |  |
Commodity derivatives: | 1 | 4
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 3 [Member] | Basis Swaps IFERC NYMEX [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 3 [Member] | Swing Swaps IFERC [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 3 [Member] | Fixed Swaps/Futures [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - Natural Gas [Member] | Level 3 [Member] | Forward Physical Swaps [Member] |  |
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - NGLs [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 233 | 99
Commodity derivatives: | (273) | (89)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - NGLs [Member] | Level 1 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 233 | 99
Commodity derivatives: | (273) | (89)
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - NGLs [Member] | Level 2 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | 0 | 0
Fair Value, Measurements, Recurring [Member] | Commodity Derivatives - NGLs [Member] | Level 3 [Member] | Forward Swaps [Member] |  |
Commodity derivatives: | 0 | 0
Commodity derivatives: | $ 0 | $ 0

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