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v3.24.2

Fair Value Measurements - Schedule of Assets and Liabilities Measured On Recurring Basis (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Liabilities |  |
Derivative Liability | $ 543 | $ 617
CERC |  |
Liabilities |  |
Derivative Liability | 4 | 11
Fair Value, Recurring |  |
Assets |  |
Equity securities | 477 | 541
Investments, including money market funds | 35 | 31
Total assets | 512 | 572
Liabilities |  |
Total liabilities | 543 | 617
Fair Value, Recurring | Houston Electric |  |
Assets |  |
Investments, including money market funds | 20 | 14
Total assets | 20 | 14
Fair Value, Recurring | CERC |  |
Assets |  |
Investments, including money market funds | 15 | 15
Total assets | 15 | 15
Liabilities |  |
Total liabilities | 4 | 11
Fair Value, Recurring | Indexed debt securities derivative |  |
Liabilities |  |
Derivative Liability | 538 | 605
Fair Value, Recurring | Natural gas derivatives |  |
Liabilities |  |
Derivative Liability | 5 | 12
Fair Value, Recurring | Natural gas derivatives | CERC |  |
Liabilities |  |
Derivative Liability | 4 | 11
Level 1 | Fair Value, Recurring |  |
Assets |  |
Equity securities | 477 | 541
Investments, including money market funds | 35 | 31
Total assets | 512 | 572
Liabilities |  |
Total liabilities | 0 | 0
Level 1 | Fair Value, Recurring | Houston Electric |  |
Assets |  |
Investments, including money market funds | 20 | 14
Total assets | 20 | 14
Level 1 | Fair Value, Recurring | CERC |  |
Assets |  |
Investments, including money market funds | 15 | 15
Total assets | 15 | 15
Liabilities |  |
Total liabilities | 0 | 0
Level 1 | Fair Value, Recurring | Indexed debt securities derivative |  |
Liabilities |  |
Derivative Liability | 0 | 0
Level 1 | Fair Value, Recurring | Natural gas derivatives |  |
Liabilities |  |
Derivative Liability | 0 | 0
Level 1 | Fair Value, Recurring | Natural gas derivatives | CERC |  |
Liabilities |  |
Derivative Liability | 0 | 0
Level 2 | Fair Value, Recurring |  |
Assets |  |
Equity securities | 0 | 0
Investments, including money market funds | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Total liabilities | 543 | 617
Level 2 | Fair Value, Recurring | Houston Electric |  |
Assets |  |
Investments, including money market funds | 0 | 0
Total assets | 0 | 0
Level 2 | Fair Value, Recurring | CERC |  |
Assets |  |
Investments, including money market funds | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Total liabilities | 4 | 11
Level 2 | Fair Value, Recurring | Indexed debt securities derivative |  |
Liabilities |  |
Derivative Liability | 538 | 605
Level 2 | Fair Value, Recurring | Natural gas derivatives |  |
Liabilities |  |
Derivative Liability | 5 | 12
Level 2 | Fair Value, Recurring | Natural gas derivatives | CERC |  |
Liabilities |  |
Derivative Liability | 4 | 11
Level 3 | Fair Value, Recurring |  |
Assets |  |
Equity securities | 0 | 0
Investments, including money market funds | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Total liabilities | 0 | 0
Level 3 | Fair Value, Recurring | Houston Electric |  |
Assets |  |
Investments, including money market funds | 0 | 0
Total assets | 0 | 0
Level 3 | Fair Value, Recurring | CERC |  |
Assets |  |
Investments, including money market funds | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Total liabilities | 0 | 0
Level 3 | Fair Value, Recurring | Indexed debt securities derivative |  |
Liabilities |  |
Derivative Liability | 0 | 0
Level 3 | Fair Value, Recurring | Natural gas derivatives |  |
Liabilities |  |
Derivative Liability | 0 | 0
Level 3 | Fair Value, Recurring | Natural gas derivatives | CERC |  |
Liabilities |  |
Derivative Liability | $ 0 | $ 0

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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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