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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Current portion of income tax provision: |  |  |  |
Federal |  | $ 0 | $ 4 |
State |  | (12) | (11) |
Total current portion |  | (12) | (7) |
Deferred portion of income tax provision: |  |  |  |
Federal |  | (4) | (7) |
State |  | (5) | 4 |
Total deferred portion |  | (9) | (3) |
Total provision for income taxes |  | (21) | $ (10) |
Deferred tax liabilities: |  |  |  |
Attributable to investment in OTA | [1] | 441 |  | $ 436
Attributable to property, plant and equipment |  | 143 |  | 138
Attributable to investments in other entities |  | 5 |  | 4
Other |  | 83 |  | 83
Total deferred tax liabilities |  | 672 |  | 661
Deferred tax assets: |  |  |  |
Net operating loss carryovers | [2] | 48 |  | 46
Temporary differences related to Texas Margin Tax |  | 4 |  | 4
Total deferred tax assets |  | 52 |  | 50
Total net deferred tax liabilities |  | $ 620 |  | $ 611
[1] | Represents the deferred tax liability balance held by our wholly owned subsidiary, OTA Holdings, Inc. ("OTA"), which we acquired in March 2020.
[2] | The loss amount presented as of March 31, 2024 has an indefinite carryover period. All losses are subject to limitations on their utilization.

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