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Supplemental Disclosure of Cash Flow and Balance Sheet Information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Interest, net of capitalized interest (under further review) | $ 664 | $ 480 | $ 489 |
Income tax payments (refunds), net | 215 | 421 | (46) |
Accounts payable related to capital expenditures | 246 | 335 | 370 |
ROU assets obtained in exchange for lease liabilities | 3 | 7 | 2 |
Restricted cash included in Prepaid expenses and other current assets | $ 90 | $ 74 |  |
Restricted Cash and Cash Equivalents, Statement of Financial Position [Extensible Enumeration] | Prepaid expenses and other current assets ($15 and $13 related to VIEs, respectively) | Prepaid expenses and other current assets ($15 and $13 related to VIEs, respectively) |  |
Restricted cash included in Prepaid expenses and other current assets | $ 19 | $ 17 |  |
Total cash, cash equivalents and restricted cash shown in Statements of Consolidated Cash Flows | 109 | 91 | 254 | $ 167
Recovery of Extraordinary Gas Costs |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Income taxes paid | 215 |  |  |
Energy Transfer Common Units |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Fair value of units received | 0 | 0 | 1,672 |
Energy Transfer Series G Preferred Units |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Fair value of units received | 0 | 0 | 385 |
Houston Electric |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Interest, net of capitalized interest (under further review) | 287 | 223 | 208 |
Income tax payments (refunds), net | 12 | 142 | 20 |
Accounts payable related to capital expenditures | 166 | 168 | 261 |
Fair value of units received | 0 | 38 | 0 |
ROU assets obtained in exchange for lease liabilities | 1 | 6 | 0 |
Restricted cash included in Prepaid expenses and other current assets | 76 | 75 |  |
Restricted cash included in Prepaid expenses and other current assets | 13 | 13 |  |
Total cash, cash equivalents and restricted cash shown in Statements of Consolidated Cash Flows | 89 | 88 | 233 | 154
Houston Electric | Other Current Liabilities |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Contributions in aid of construction | 47 | 35 |  |
Houston Electric | Energy Transfer Common Units |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Fair value of units received | 0 | 0 | 0 |
Houston Electric | Energy Transfer Series G Preferred Units |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Fair value of units received | 0 | 0 | 0 |
CERC Corp |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Interest, net of capitalized interest (under further review) | 175 | 104 | 130 |
Income tax payments (refunds), net | 115 | 37 | (7) |
Accounts payable related to capital expenditures | 74 | 139 | 128 |
Fair value of units received | 0 | 54 | 0 |
ROU assets obtained in exchange for lease liabilities | 0 | 0 | 0 |
Restricted cash included in Prepaid expenses and other current assets | 1 | 0 |  |
Restricted cash included in Prepaid expenses and other current assets | 0 | 0 |  |
Total cash, cash equivalents and restricted cash shown in Statements of Consolidated Cash Flows | 1 | 0 | 15 | $ 6
CERC Corp | Credits Related to Customers on Budget Billing Programs |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Contract with customer, liability, current, budget billing programs | 118 | 61 |  |
CERC Corp | Energy Transfer Common Units |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Fair value of units received | 0 | 0 | 0 |
CERC Corp | Energy Transfer Series G Preferred Units |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Fair value of units received | 0 | 0 | $ 0 |
Bond Companies | Houston Electric |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Restricted cash included in Prepaid expenses and other current assets | 76 | 75 |  |
Bond Companies and Securitization Bond Company |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Restricted cash included in Prepaid expenses and other current assets | $ 90 | $ 75 |  |

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