Supplementary Financial Information - Schedule of Other Income and Deductions (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Supplementary Financial Information [Abstract]
NDT net income (loss)	$ (10)	$ 35
Insurance settlements	0	1
Gain on sale of land	0	1
Gain on TRA settlement	0	10
Interest income	6	23
All other	(1)	17
Total other income (deductions), net	$ (5)	$ 87

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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Amount of interest income earned from interest bearing assets classified as other.

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Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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- Definition

Gain (Loss) On Tax Receivable Agreement Settlement

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Gain (Loss) Related to Insurance And Litigation Settlements

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- Definition

NDT Net Income

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Other nonoperating income not separately presented elsewhere.

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Supplementary Financial Information [Abstract]

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