Long-Term Debt Issuances and Retirements (Details) - The Williams Companies, Inc. [Member] - USD ($) $ in Millions	Jun. 24, 2024	Mar. 04, 2024	Aug. 13, 2024	Jan. 05, 2024
4.9 Percent Senior Unsecured Notes Due 2029
Debt Instrument [Line Items]
Long-term debt face amount				$ 1,100
Long-term debt interest rate				4.90%
5.15 Percent Senior Unsecured Notes Due 2034
Debt Instrument [Line Items]
Long-term debt face amount			$ 300	$ 1,000
Long-term debt interest rate			5.15%	5.15%
4.3% Senior Unsecured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate		4.30%
Extinguishment of Debt, Amount		$ 1,000
4.55% Senior Unsecured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate	4.55%
Extinguishment of Debt, Amount	$ 1,250
4.8 Percent Senior Unsecured Notes Due 2029
Debt Instrument [Line Items]
Long-term debt face amount			$ 450
Long-term debt interest rate			4.80%
5.8 Percent Senior Unsecured Notes Due 2054
Debt Instrument [Line Items]
Long-term debt face amount			$ 750
Long-term debt interest rate			5.80%