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Fair Value Measurements Nonrecurring Measurements (Details) $ in Millions	3 Months Ended
	Sep. 30, 2025 USD ($)
Williams Companies Inc [Member] | Other Operating Income (Expense) | Level 3 [Member] | West [Member] | Property, plant, and equipment, net [Member]
Fair Value Assets Measured On Nonrecurring Basis [Abstract]
Impairment of certain assets	$ 25

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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
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-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-1

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Fair Value Assets Measured On Nonrecurring Basis [Abstract]

+ References

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