Long-Term Debt Issuances and Retirements (Details) - USD ($) $ in Millions	Nov. 15, 2023	Oct. 17, 2022	May 16, 2022	Jan. 18, 2022	Sep. 01, 2021	Aug. 16, 2021	Jan. 05, 2024	Dec. 31, 2023	Aug. 10, 2023		Mar. 02, 2023	Aug. 08, 2022	Oct. 08, 2021		Mar. 02, 2021
The Williams Companies, Inc. [Member] | 4.9 Percent Senior Unsecured Notes Due 2029 | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term debt face amount							$ 1,100
Long-term debt interest rate							4.90%
The Williams Companies, Inc. [Member] | 5.15 Percent Senior Unsecured Notes Due 2034 | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term debt face amount							$ 1,000
Long-term debt interest rate							5.15%
The Williams Companies, Inc. [Member] | 5.40 Percent Senior Unsecured Notes Due 2026
Debt Instrument [Line Items]
Long-term debt face amount									$ 350	[1]	$ 750
Long-term debt interest rate								5.40%	5.40%	[1]	5.40%
The Williams Companies, Inc. [Member] | 5.30 Percent Senior Unsecured Notes Due 2028
Debt Instrument [Line Items]
Long-term debt face amount									$ 900
Long-term debt interest rate								5.30%	5.30%
The Williams Companies, Inc. [Member] | 5.65 Percent Senior Unsecured Notes Due 2033
Debt Instrument [Line Items]
Long-term debt face amount											$ 750
Long-term debt interest rate								5.65%			5.65%
The Williams Companies, Inc. [Member] | 4.65 Percent Senior Unsecured Notes Due 2032
Debt Instrument [Line Items]
Long-term debt face amount												$ 1,000
Long-term debt interest rate								4.65%				4.65%
The Williams Companies, Inc. [Member] | 5.3 Percent Senior Unsecured Notes Due 2052
Debt Instrument [Line Items]
Long-term debt face amount												$ 750
Long-term debt interest rate								5.30%				5.30%
The Williams Companies, Inc. [Member] | 2.6 Percent Senior Unsecured Notes Due 2031
Debt Instrument [Line Items]
Long-term debt face amount													$ 600	[2]	$ 900
Long-term debt interest rate								2.60%					2.60%	[2]	2.60%
The Williams Companies, Inc. [Member] | 3.5 Percent Senior Unsecured Notes Due 2051
Debt Instrument [Line Items]
Long-term debt face amount													$ 650
Long-term debt interest rate								3.50%					3.50%
The Williams Companies, Inc. [Member] | 4.5% Senior Unsecured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate	4.50%							4.50%
Extinguishment of Debt, Amount	$ 600
The Williams Companies, Inc. [Member] | 3.7% Senior Unsecured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate		3.70%
Extinguishment of Debt, Amount		$ 850
The Williams Companies, Inc. [Member] | 3.35% Senior Unsecured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate			3.35%
Extinguishment of Debt, Amount			$ 750
The Williams Companies, Inc. [Member] | 3.6% Senior Unsecured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate				3.60%
Extinguishment of Debt, Amount				$ 1,250
The Williams Companies, Inc. [Member] | 7.875% Senior Unsecured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate					7.875%
Extinguishment of Debt, Amount					$ 371
The Williams Companies, Inc. [Member] | 4% Senior Unsecured Notes Due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt interest rate						4.00%
Extinguishment of Debt, Amount						$ 500
Transcontinental Gas Pipe Line Company, LLC [Member] | Atlantic Sunrise [Member]
Debt Instrument [Line Items]
Long-term debt interest rate								9.00%
Transcontinental Gas Pipe Line Company, LLC [Member] | Leidy South
Debt Instrument [Line Items]
Long-term debt interest rate								13.00%
Transcontinental Gas Pipe Line Company, LLC [Member] | Dalton [Member]
Debt Instrument [Line Items]
Long-term debt interest rate								9.00%

[1] Additional issuance of the 5.40 percent senior notes due 2026 issued on March 2, 2023, and trade interchangeably with such notes.

[2] Additional issuance of the 2.6 percent senior notes due 2031 issued on March 2, 2021, and trade interchangeably with such notes.