Income Taxes, Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Deferred tax liabilities:
Attributable to investment in OTA	[1]	$ 436	$ 406
Attributable to property, plant and equipment		138	133
Attributable to investments in other entities		4	5
Other		83	60
Total deferred tax liabilities		661	604
Deferred tax assets:
Net operating loss carryovers	[2]	46	22
Temporary differences related to Texas Margin Tax		4	4
Total deferred tax assets		50	26
Valuation allowance		0	22
Total deferred tax assets, net of valuation allowance		50	4
Total net deferred tax liabilities		$ 611	$ 600

[1] Represents the deferred tax liability balance held by our wholly owned subsidiary, OTA, which we acquired in March 2020.

[2] The loss amount presented as of December 31, 2023 has an indefinite carryover period.  All losses are subject to limitations on their utilization.