Subsequent Events (Details) - Subsequent Event [Member] $ in Millions	1 Months Ended
Jul. 31, 2026 USD ($)
Williams Companies Inc [Member] \| Power Innovation JV
Subsequent Event [Line Items]
Subsidiary, Ownership Percentage, Noncontrolling Owner	49.00%
Noncontrolling Interest in Joint Ventures	$ 5,340
Williams Companies Inc [Member] \| Capital in excess of par value [Member] \| Power Innovation JV
Subsequent Event [Line Items]
Changes in ownership of consolidated subsidiaries, net (Note 2)	3,750
Williams Companies Inc [Member] \| Noncontrolling Interests \| Power Innovation JV
Subsequent Event [Line Items]
Changes in ownership of consolidated subsidiaries, net (Note 2)	3,750
Momentum Midstream Acquisition [Axis]
Subsequent Event [Line Items]
Business Combination, Consideration Transferred	5,500
Business Combination, Consideration Transferred, Equity Interest	$ 2,000

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