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Hedging Activities and Fair Value Measurements, Gains and Losses on Derivative Instruments and Related Hedged Items (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) |  | $ (33) | $ (78) | $ 27
NGL Pipelines & Services [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) |  | (25) | (52) | 40
Crude Oil Pipelines & Services [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) |  | (5) | (30) | (3)
Natural Gas Pipelines & Services [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) |  | (1) | (3) | (2)
Petrochemical & Refined Products Services [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized gains (losses) |  | (2) | 7 | (8)
Derivatives in fair value hedging relationships [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (Loss) Recognized in Income on Derivative |  | 7 | (103) | (243)
Gain (Loss) Recognized in Income on Hedged Item |  | (7) | 66 | 226
Derivatives in fair value hedging relationships [Member] | Commodity derivatives [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (Loss) Recognized in Income on Derivative |  | $ 7 | $ (103) | $ (243)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Revenues | Revenues | Revenues
Derivatives in fair value hedging relationships [Member] | Commodity derivatives [Member] | Revenue [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (Loss) Recognized in Income on Hedged Item |  | $ (7) | $ 66 | $ 226
Derivatives in cash flow hedging relationships [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Change in Value Recognized in Other Comprehensive Income (Loss) on Derivative |  | 57 | 280 | (495)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) to Income |  | 115 | 201 | (946)
Derivatives in cash flow hedging relationships [Member] | Interest rate derivatives [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Change in Value Recognized in Other Comprehensive Income (Loss) on Derivative |  | (36) | 26 | 183
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) to Income |  | $ 5 | $ (19) | $ (38)
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Interest expense | Interest expense | Interest expense
Accumulated other comprehensive income related to interest rate derivative instruments expected to be reclassified to earnings in interest expense over the next twelve months |  | $ 9 |  |
Derivatives in cash flow hedging relationships [Member] | Commodity derivatives [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to earnings over the next twelve months |  | 146 |  |
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to revenue over the next twelve months |  | 161 |  |
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to operating costs and expenses over the next twelve months |  | (15) |  |
Derivatives in cash flow hedging relationships [Member] | Commodity derivatives [Member] | Revenue [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Change in Value Recognized in Other Comprehensive Income (Loss) on Derivative | [1] | 81 | $ 227 | $ (658)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) to Income |  | 106 | 181 | (893)
Derivatives in cash flow hedging relationships [Member] | Commodity derivatives [Member] | Operating costs and expenses [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Change in Value Recognized in Other Comprehensive Income (Loss) on Derivative | [1] | 12 | 27 | (20)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) to Income |  | 4 | 39 | (15)
Derivatives not designated as hedging instruments [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (Loss) Recognized in Income on Derivative |  | 213 | 88 | 151
Derivatives not designated as hedging instruments [Member] | Commodity derivatives [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Realized gains (losses) |  | 246 |  |
Unrealized gains (losses) |  | (33) |  |
Derivatives not designated as hedging instruments [Member] | Commodity derivatives [Member] | Revenue [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (Loss) Recognized in Income on Derivative |  | 213 | 74 | 150
Derivatives not designated as hedging instruments [Member] | Commodity derivatives [Member] | Operating costs and expenses [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (Loss) Recognized in Income on Derivative |  | $ 0 | $ 14 | $ 1
[1] | The fair value of these derivative instruments will be reclassified to their respective locations on the Statement of Consolidated Operations when the forecasted transactions affect earnings.

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